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International Journal <strong>of</strong> Nursing<br />

Education Scholarship<br />

Volume 4, Issue 1 2007 Article 23<br />

<strong>Psychometric</strong> <strong>Properties</strong> <strong>of</strong> <strong>the</strong> <strong>Chinese</strong><br />

<strong>Leadership</strong> <strong>Practices</strong> Inventory<br />

Hsiu-Chin Chen ∗ Mark Baron †<br />

∗ Utah Valley State College, chenhs@uvsc.edu<br />

† University <strong>of</strong> South Dakota, mbaron@usd.edu<br />

Copyright c○2007 The Berkeley Electronic Press. All rights reserved.


<strong>Psychometric</strong> <strong>Properties</strong> <strong>of</strong> <strong>the</strong> <strong>Chinese</strong><br />

<strong>Leadership</strong> <strong>Practices</strong> Inventory<br />

Hsiu-Chin Chen and Mark Baron<br />

Abstract<br />

There is little evidence <strong>of</strong> psychometric properties <strong>of</strong> <strong>the</strong> <strong>Leadership</strong> <strong>Practices</strong> Inventory (LPI)<br />

when used with Taiwan’s nursing faculty. The purpose <strong>of</strong> this study was to examine psychometric<br />

properties <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI and provide a culturally appropriate instrument for use in Taiwan’s<br />

nursing. Thirteen bachelor and nine associate degree nursing programs were eligible for participation.<br />

The <strong>Chinese</strong> LPI was used to ga<strong>the</strong>r nursing faculty’s perceptions <strong>of</strong> leadership behaviors<br />

<strong>of</strong> nursing deans and directors. A total <strong>of</strong> 369 questionnaires were returned. <strong>Psychometric</strong> examinations<br />

used content validity, internal consistency reliability, item analysis, and construct and<br />

concurrent validities. Cronbach’s alpha <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI total scale was .96. Three factors were<br />

extracted that explained 59.5 % <strong>of</strong> <strong>the</strong> variance. Concurrent validity was supported by <strong>the</strong> <strong>Chinese</strong><br />

Multifactor <strong>Leadership</strong> Questionnaire (MLQ-5X). Findings for <strong>the</strong> psychometric properties and<br />

cultural appropriateness <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI supported its potential as an instrument for measuring<br />

nursing leadership in Taiwan.<br />

KEYWORDS: psychometrics, content validity, factor analysis, item analysis, concurrent validity


Chen and Baron: <strong>Psychometric</strong>s <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI<br />

Effective leadership has played a critical role in operating an<br />

organization’s performance. The central role <strong>of</strong> effective leadership is to build a<br />

relationship between those who aspire to lead and those who choose to follow<br />

(Kouzes & Posner, 2002). Studies have been conducted to explore how leadership<br />

can be used to influence subordinates for better organizational accomplishment.<br />

The outcome <strong>of</strong> <strong>the</strong>se studies relied heavily on using qualified instruments to<br />

examine leaders’ performance on different leadership dimensions (Zagorsek,<br />

Stough, & Jaklic, 2006). Accurate assessment <strong>of</strong> leadership can contribute a<br />

substantial body <strong>of</strong> knowledge about <strong>the</strong> relationship between leadership and<br />

social-psychological phenomenon, and provide useful feedback for leaders to<br />

understand <strong>the</strong>ir leadership behaviors, as perceived by <strong>the</strong>ir subordinates.<br />

One <strong>of</strong> <strong>the</strong> most developed and tested instruments is <strong>the</strong> Posner and<br />

Kouzes’ (1988) <strong>Leadership</strong> <strong>Practices</strong> Inventory (LPI) based on five practices <strong>of</strong><br />

exemplary leadership. Yet, <strong>the</strong>re is little evidence regarding psychometric<br />

properties <strong>of</strong> its use in nursing education, especially in Taiwan. Therefore, <strong>the</strong><br />

main purpose <strong>of</strong> this study was to examine psychometric properties <strong>of</strong> <strong>the</strong> <strong>Chinese</strong><br />

LPI and to provide a culturally appropriate instrument for use in Taiwan’s nursing<br />

education.<br />

The following research questions were addressed in this study: (1) what<br />

are Cronbach’s alpha coefficients, item-to-item, and item-to-total correlations <strong>of</strong><br />

<strong>the</strong> <strong>Chinese</strong> LPI-observer according to item analysis for internal consistency<br />

reliability? (2) what is <strong>the</strong> construct validity <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI-observer assessed<br />

by Taiwan’s nursing faculty? and (3) are <strong>the</strong> <strong>Chinese</strong> LPI-observer total and<br />

subscales significantly correlated with <strong>the</strong> <strong>Chinese</strong> Multifactor <strong>Leadership</strong><br />

Questionnaire (MLQ-5X) for concurrent validity assessment?<br />

BACKGROUND<br />

In <strong>the</strong> 1980s, transformational leadership became a well-known topic in<br />

psychology, management, sociology, and political science. The concept <strong>of</strong><br />

transformational leadership stimulated researchers’ interest in understanding <strong>of</strong><br />

<strong>the</strong> leadership process that goes beyond <strong>the</strong> dimensions <strong>of</strong> consideration <strong>of</strong><br />

subordinates’ feeling and initiating subordinates toward goal accomplishment.<br />

Integrated into transformational leadership <strong>the</strong>ory are trait, behavior, and<br />

contingency approaches, while incorporating and building upon charismatic and<br />

political leadership. As its name implies, transformational leadership motivates<br />

individuals to change and promotes followers’ awareness and acceptance <strong>of</strong> <strong>the</strong><br />

group’s vision and mission.<br />

Published by The Berkeley Electronic Press, 2007<br />

1


International Journal <strong>of</strong> Nursing Education Scholarship, Vol. 4 [2007], Iss. 1, Art. 23<br />

Based on <strong>the</strong> previous studies <strong>of</strong> leadership, Bass (1985) proposed a more<br />

expanded and refined version <strong>of</strong> transformational leadership <strong>the</strong>ory.<br />

Transformational leaders motivate subordinates to do more than originally<br />

expected, and accordingly, subordinates’ confidence levels are elevated and needs<br />

satisfied. The main task <strong>of</strong> Bass’ transformational leadership research is <strong>the</strong><br />

development <strong>of</strong> <strong>the</strong> Multifactor <strong>Leadership</strong> Questionnaire (MLQ) used to identify<br />

<strong>the</strong> transformational, transactional, and laissez-faire leadership styles (Bass, 1985).<br />

The MLQ has been revised several times and has been used in nearly 200 research<br />

programs, doctoral dissertations, and master <strong>the</strong>ses around <strong>the</strong> world (Bass &<br />

Avolio, 2000).<br />

Similar to <strong>the</strong> concept <strong>of</strong> transformational leadership <strong>the</strong>ory, Posner and<br />

Kouzes’ (1988) visionary or exemplary leadership proposed that outstanding<br />

leaders use five practices <strong>of</strong> behaviors to facilitate employees to achieve<br />

organizational goals. Visionary leaders search for opportunities to change <strong>the</strong><br />

status quo, inspire a shared vision and set a model to foster collaboration,<br />

empower employees to pursue a potential future, and recognize <strong>the</strong> contributions<br />

<strong>of</strong> employees to <strong>the</strong> overall success <strong>of</strong> <strong>the</strong> organization. The five practices <strong>of</strong><br />

exemplary leadership have subsequently been developed into <strong>the</strong> <strong>Leadership</strong><br />

<strong>Practices</strong> Inventory (LPI).<br />

The LPI developed by Posner and Kouzes (1988) is used to assess<br />

leadership behavior. A conceptual leadership model on which <strong>the</strong> LPI is based<br />

was developed through a qualitative study including a survey <strong>of</strong> 1,100 managers,<br />

and was generated from 38 in-depth interviews <strong>of</strong> managers. Content analysis was<br />

employed to analyze <strong>the</strong> data collected from <strong>the</strong> managers who had personal best<br />

experience being leaders. Five practices <strong>of</strong> exemplary leadership were <strong>the</strong>n<br />

identified. After <strong>the</strong> development <strong>of</strong> <strong>the</strong> five practices, <strong>the</strong> LPI focused on<br />

articulating scale items. The feedback <strong>of</strong> administering <strong>the</strong> LPI obtained from<br />

Masters <strong>of</strong> Business Administration students, experts, and managers formed a 30item<br />

instrument with six items reflecting each <strong>of</strong> <strong>the</strong> five leadership practices.<br />

Each item was cast on a 5-point Likert scale scored from 1 (seldom or rarely) to 5<br />

(very <strong>of</strong>ten) representing <strong>the</strong> frequency <strong>of</strong> using a leadership behavior. Two<br />

parallel forms were developed to evaluate <strong>the</strong> leadership behaviors described by<br />

<strong>the</strong> leaders (LPI-self) or observed by <strong>the</strong> subordinates (LPI-observer).<br />

<strong>Psychometric</strong> evaluation <strong>of</strong> <strong>the</strong> LPI was examined using a sample <strong>of</strong> 2,876<br />

managers and subordinates who worked in a variety <strong>of</strong> private and public sector<br />

companies (Posner & Kouzes, 1988). Internal reliabilities <strong>of</strong> <strong>the</strong> five subscales<br />

ranged from .70 to .84 for <strong>the</strong> LPI-self and .79 to .91 for <strong>the</strong> LPI-observer. The<br />

average <strong>of</strong> test-retest reliability was .94. A principal components factor analysis<br />

http://www.bepress.com/ijnes/vol4/iss1/art23<br />

2


Chen and Baron: <strong>Psychometric</strong>s <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI<br />

(PCA) with varimax rotation was conducted to extract five factors accounting for<br />

59.9% <strong>of</strong> <strong>the</strong> variance. The loadings <strong>of</strong> <strong>the</strong> five factors ranged from .37 to .73<br />

were reported.<br />

An additional examination <strong>of</strong> <strong>the</strong> psychometric properties <strong>of</strong> <strong>the</strong> LPI<br />

involved over 36,000 managers and subordinates representing private and public<br />

companies (Posner & Kouzes, 1993). Internal reliabilities for <strong>the</strong> five subscales <strong>of</strong><br />

<strong>the</strong> LPI-self ranged from .70 to .85 and .81 to .92 for <strong>the</strong> LPI-observer. Test-retest<br />

reliability for <strong>the</strong> five practices was above <strong>the</strong> .93 level. Five factors were<br />

extracted from a PCA with varimax rotation, and accounted for 60.2% <strong>of</strong> <strong>the</strong><br />

variance. The findings consistently supported <strong>the</strong> LPI for measuring <strong>the</strong> five<br />

leadership practices (Posner & Kouzes, 1993). Even in <strong>the</strong> latest third edition <strong>of</strong><br />

<strong>the</strong> LPI, proposed is that some question items were revised and reordered in item<br />

number. The five practices remained <strong>the</strong> same and psychometric properties were<br />

consistent with <strong>the</strong> first edition (Kouzes & Posner, 2000).<br />

The extensive testing has revealed that <strong>the</strong> LPI exhibited sound<br />

psychometric properties. Yet, a study using <strong>the</strong> item response <strong>the</strong>ory to analyze its<br />

reliability found that some items are redundant and contribute little to <strong>the</strong> overall<br />

precision <strong>of</strong> <strong>the</strong> instrument (Zagorsek et al., 2006). Moreover, <strong>the</strong>re are no reports<br />

<strong>of</strong> psychometric properties when <strong>the</strong> LPI is used in <strong>the</strong> healthcare system<br />

(Tourangeau & McGilton, 2004). Because <strong>of</strong> <strong>the</strong> limited evidence <strong>of</strong> <strong>the</strong> LPIs<br />

psychometric evaluation in nursing research, Tourangeau and McGilton collected<br />

data from 67 LPI-self <strong>of</strong> nurse managers and 347 LPI-observer <strong>of</strong> nurses, and<br />

aimed at narrowing <strong>the</strong> knowledge gap <strong>of</strong> psychometric properties <strong>of</strong> <strong>the</strong> LPI used<br />

in nursing fields.<br />

Computerized search from 1990 to 2005, including nursing (CINAHL),<br />

medical literature (Medline), and <strong>the</strong> “Dissertation and Thesis Abstract System”<br />

in Taiwan’s Ministry <strong>of</strong> Education databases, indicated that <strong>the</strong> LPI has not been<br />

used to evaluate leadership <strong>of</strong> nursing administration in Taiwan. Before<br />

instruments can be used for populations o<strong>the</strong>r than those for whom <strong>the</strong>y were<br />

originally developed, assessment <strong>of</strong> psychometric properties and validation <strong>of</strong><br />

cultural appropriateness are essential (Lee, Farran, Tripp-Reimer, & Sadler, 2003).<br />

Researchers are convinced that an instrument is required to have rigid reliability<br />

and validity tests before being used in leadership research in order to examine <strong>the</strong><br />

behaviors <strong>of</strong> leaders and <strong>the</strong> related factors affecting <strong>the</strong> relationship between<br />

leaders and subordinates (Huber et al., 2000).<br />

Published by The Berkeley Electronic Press, 2007<br />

3


International Journal <strong>of</strong> Nursing Education Scholarship, Vol. 4 [2007], Iss. 1, Art. 23<br />

Study Design<br />

METHODS<br />

This was a cross-sectional survey study using self-administered<br />

questionnaires. The study procedures consisted <strong>of</strong> four stages including<br />

translation and back-translation <strong>of</strong> <strong>the</strong> first edition <strong>of</strong> <strong>the</strong> LPI, an expert panel<br />

review for content validation, a pilot test stage, and a study stage. The purpose <strong>of</strong><br />

translating a research instrument is to achieve semantic equivalence for<br />

conducting a cross-cultural study with non-English-speaking populations. A<br />

modified version <strong>of</strong> Brislin’s (1986) translation method was used to translate <strong>the</strong><br />

LPI into <strong>the</strong> <strong>Chinese</strong> version. The modified procedures were as follows: (1)<br />

provide <strong>the</strong> English LPI to a bilingual person who was familiar with Taiwan’s<br />

culture; (2) instruct <strong>the</strong> bilingual person to translate <strong>the</strong> English LPI into <strong>the</strong><br />

<strong>Chinese</strong> version; (3) have <strong>the</strong> o<strong>the</strong>r bilingual person who was qualified for<br />

bilingual teaching in Taiwan blindly translate <strong>the</strong> <strong>Chinese</strong> version back to an<br />

English version; and (4) ask three bilingual raters individually to compare <strong>the</strong><br />

English and <strong>Chinese</strong> versions for semantic equivalence. All raters and translators<br />

held masters degrees and had taught in English teaching institutions. Similar to<br />

<strong>the</strong> process <strong>of</strong> translation and back translation used in Wang, Lee, and Fetzer’s<br />

(2006) study, strategies including selecting qualified translators, a review panel,<br />

and a pilot test on target population helped to maximize <strong>the</strong> translation<br />

equivalence <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI.<br />

An expert panel review for content validation <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI is critical<br />

for assuring <strong>the</strong> content holds <strong>the</strong> similar meaning with <strong>the</strong> original one and<br />

appropriately fits for Taiwan’s culture. Three bilingual pr<strong>of</strong>essors who held<br />

doctoral degrees and had worked as leaders in Taiwan’s nursing administration<br />

were invited. These experts were asked to rate items for linguistic and conceptual<br />

clarity, representative <strong>of</strong> Taiwan’s culture and background, and <strong>the</strong> relevance <strong>of</strong><br />

<strong>the</strong> identified concept. Each item was rated by a 4-point ordinal rating scale<br />

scored from 1 to 4. The average congruency percentage (ACP) among raters was<br />

96%, indicating acceptable items if percentage is 90% or higher (Waltz,<br />

Strickland, & Lenz, 2005). The relevance and representative <strong>of</strong> item-level content<br />

validity index (I-CVI) for <strong>the</strong> 30-item <strong>Chinese</strong> LPI were 1.0 and .99, respectively.<br />

An item is considered well for use if <strong>the</strong> I-CVI is 1.0 rated by five or fewer<br />

experts (Lynn, 1986). According to <strong>the</strong> comments <strong>of</strong> linguistic clarity obtained<br />

from <strong>the</strong> expert panel, ambiguous wording was revised to better accommodate<br />

Taiwan’s nursing educational settings.<br />

http://www.bepress.com/ijnes/vol4/iss1/art23<br />

4


Permissions for conducting this study were approved by <strong>the</strong> university’s<br />

Institutional Review Board and each <strong>of</strong> <strong>the</strong> participating nursing schools in<br />

Taiwan. A convenience sample <strong>of</strong> 15 faculty members was piloted from a junior<br />

nursing college in Taiwan to determine <strong>the</strong> readability <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI.<br />

Eligibility criteria <strong>of</strong> selecting subjects for <strong>the</strong> pilot test included full-time female<br />

and male nursing faculty holding ranks <strong>of</strong> instructor, assistant pr<strong>of</strong>essor, associate<br />

pr<strong>of</strong>essor, or pr<strong>of</strong>essor. The faculty were asked to provide <strong>the</strong>ir comments about<br />

whe<strong>the</strong>r <strong>the</strong> instructions were clear and if <strong>the</strong> question items were easy to answer.<br />

No items were modified.<br />

Population and Sample<br />

A minimum sample size <strong>of</strong> 20 full-time nursing faculty members from<br />

each school was required for selection. In 2003, 13 baccalaureate and nine<br />

associate degree nursing programs were eligible for this study. To qualify for this<br />

study, each female and male subject was required to be full-time faculty, an<br />

instructor, assistant pr<strong>of</strong>essor, associate pr<strong>of</strong>essor, or pr<strong>of</strong>essor. An adequate<br />

sample size for factor analysis and validity and reliability analyses was<br />

determined to be at least 300 subjects in this study (Tabachnick & Fidell, 2001).<br />

Twenty faculty members were randomly selected from each <strong>of</strong> <strong>the</strong> 13 schools<br />

with baccalaureate nursing programs for participation. To ensure adequate<br />

representation, all nursing faculty from each <strong>of</strong> <strong>the</strong> nine associate nursing<br />

programs were recruited. In terms <strong>of</strong> <strong>the</strong> needed sample size, 516 questionnaires<br />

were mailed to <strong>the</strong> potential participants to reach a projected 60% response rate.<br />

Data were collected in a confidential manner. Participation was voluntary, and<br />

questionnaires were answered anonymously. The completed questionnaires were<br />

returned directly to <strong>the</strong> investigator through mail.<br />

Measures<br />

Chen and Baron: <strong>Psychometric</strong>s <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI<br />

The <strong>Chinese</strong> LPI-observer was used to ga<strong>the</strong>r <strong>the</strong> faculty’s perceptions <strong>of</strong><br />

<strong>the</strong>ir deans’ or directors’ five practices <strong>of</strong> leadership behavior in this study.<br />

Because <strong>of</strong> <strong>the</strong> small sample size <strong>of</strong> nursing deans and directors (n = 22), no<br />

attempt was made to collect data <strong>of</strong> self-evaluation <strong>of</strong> leadership practices. The<br />

<strong>Chinese</strong> LPI translated from <strong>the</strong> first edition is a 30-item questionnaire with a 5point<br />

Likert scale scored from 1 (seldom or rarely) to 5 (very <strong>of</strong>ten) representing<br />

<strong>the</strong> frequency <strong>of</strong> using a leadership behavior. Five subscales compose <strong>the</strong> <strong>Chinese</strong><br />

LPI with six question items in each subscale. The five subscales include<br />

challenging <strong>the</strong> process, inspiring a shared vision, enabling o<strong>the</strong>rs to act,<br />

modeling <strong>the</strong> way, and encouraging <strong>the</strong> heart. The <strong>Chinese</strong> Multifactor<br />

<strong>Leadership</strong> Questionnaire Form 5X (MLQ-5X) developed by Shieh, Mills, and<br />

Published by The Berkeley Electronic Press, 2007<br />

5


International Journal <strong>of</strong> Nursing Education Scholarship, Vol. 4 [2007], Iss. 1, Art. 23<br />

Waltz (2001) was used to examine <strong>the</strong> concurrent validity <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI. The<br />

MLQ-5X was selected because <strong>of</strong> its widespread use and <strong>the</strong> similarity <strong>of</strong><br />

underlying concepts. The <strong>Chinese</strong> MLQ-5X has 36 items, which was developed<br />

to measure 233 nursing faculty’s perceptions <strong>of</strong> <strong>the</strong>ir deans’ and directors’<br />

leadership styles <strong>of</strong> transformational, transactional, and laissez-faire in Taiwan.<br />

The Cronbach’s alphas <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> MLQ-5X total and each subscale ranged<br />

from .71 to .94. The CVI was .75 and 1.0, as assessed by doctoral bilingual<br />

pr<strong>of</strong>essors (Shieh et al., 2001). In Chen and Baron’s (2006) study for examining<br />

175 nursing faculty’s job satisfaction and <strong>the</strong>ir perceptions <strong>of</strong> leadership styles <strong>of</strong><br />

nursing directors, <strong>the</strong> <strong>Chinese</strong> MLQ-5X consistently demonstrated acceptable<br />

internal reliability (α = .70 to .88).<br />

<strong>Psychometric</strong> Analysis<br />

The internal consistency <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI-observer was assessed using<br />

Cronbach’s alpha, and <strong>the</strong> acceptable coefficient was set at .70 (Kerlinger & Lee,<br />

2000). Item analyses including item-total and inter-item correlations were<br />

performed to examine <strong>the</strong> homogeneity and multi-collinearity <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPIobserver.<br />

Acceptable coefficients for item-total correlations are greater than .30,<br />

which indicate items contributing to <strong>the</strong> measure; and greater than .30 and less<br />

than .80 for interitem correlations, which coefficients greater than .80 indicate<br />

redundant items because <strong>of</strong> multicollinearity (Tabachnick & Fidell, 2001).<br />

A PCA using varimax rotation was first computed in an attempt to<br />

replicate <strong>the</strong> five factors, as originally proposed by Posner and Kouzes (1988,<br />

1993). Then, a principal axis factor analysis (PAF) with oblimin rotation was used<br />

because <strong>the</strong> five factors were highly correlated (Tourangeau & McGilton, 2004).<br />

Oblique rotation is used when <strong>the</strong>re was evidence showing that <strong>the</strong> underlying<br />

factors are correlated (Mertler & Vannatta, 2005). It is reasonable to assume that a<br />

leader will possess more than one leadership behavior. Factors were extracted<br />

based on <strong>the</strong> results <strong>of</strong> a scree plot, eigenvalues, total variance, and <strong>the</strong> conceptual<br />

consideration. A cutting point <strong>of</strong> .40 was used for factor loading, and <strong>the</strong><br />

minimum eigenvalue <strong>of</strong> 1.0 was determined for retaining items (Pett, Lackey, &<br />

Sullivan, 2003). Pearson correlations for concurrent validity were computed to<br />

assess <strong>the</strong> relationship between <strong>the</strong> <strong>Chinese</strong> LPI-observer and <strong>the</strong> <strong>Chinese</strong> MLQ-<br />

5X.<br />

http://www.bepress.com/ijnes/vol4/iss1/art23<br />

6


Chen and Baron: <strong>Psychometric</strong>s <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI<br />

FINDINGS<br />

Initial <strong>Psychometric</strong> <strong>Properties</strong> <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI-Observer<br />

A total <strong>of</strong> 369 questionnaires were returned representing a 72% response<br />

rate. The majority (n = 335, 92.5%) <strong>of</strong> <strong>the</strong> participants were females and were<br />

married (n = 265, 73.4%). Most were between 31 and 40 years old (n = 231,<br />

63.8%), and approximately 86.5% (n = 313) earned master degrees. The<br />

Cronbach’s alpha coefficients <strong>of</strong> <strong>the</strong> 30-item <strong>Chinese</strong> LPI-observer were .96 for<br />

<strong>the</strong> total scale and .80 to .91 for <strong>the</strong> five subscales, respectively. For item analysis,<br />

<strong>the</strong> inter-item correlation coefficients for item 11 among all o<strong>the</strong>r items were less<br />

than .30. The coefficient for item 20 and item 15 was .81. Yet, <strong>the</strong> coefficients for<br />

item 15 among o<strong>the</strong>r items were less than .80. The corrected item-total coefficient<br />

<strong>of</strong> item 11 was .19. Thus, item 11 was deleted because <strong>of</strong> its lack <strong>of</strong> contribution<br />

to this measure, and <strong>the</strong> redundant item 20 was discarded.<br />

In terms <strong>of</strong> five factors developed from <strong>the</strong> original LPI, five factors were<br />

forced to enter <strong>the</strong> analysis using PCA with varimax rotation to examine construct<br />

validity <strong>of</strong> <strong>the</strong> 28 items. Two <strong>of</strong> <strong>the</strong> five factors had only three question items<br />

defining <strong>the</strong> factors, and one item composed one factor. Thus, PAF analysis with<br />

direct oblimin rotation was <strong>the</strong>n used because <strong>of</strong> moderate to high correlations (r<br />

= .53 to .79) among <strong>the</strong> five factors found in this study. The Kaiser-Meyer-Olkin<br />

measure <strong>of</strong> sampling adequacy was .96. Bartlett’s test <strong>of</strong> sphericity was<br />

significant (χ 2 = 6753.83, p = .000), which indicated that <strong>the</strong> correlation matrix<br />

was not an identity matrix. Three factors’ eigenvalues were greater than one, and<br />

a discontinuity in <strong>the</strong> plotted values between <strong>the</strong> third and fourth factor was<br />

identified in <strong>the</strong> scree test.<br />

The three factors accounted for 57.3% <strong>of</strong> <strong>the</strong> total variance. Three items<br />

were deleted because <strong>the</strong>y could explain less than 10% <strong>of</strong> <strong>the</strong> variance. Twentyfive<br />

out <strong>of</strong> <strong>the</strong> 28 items demonstrated moderate or strong loadings (> .40). The<br />

PAF with direct oblimin rotation was rerun to examine <strong>the</strong> 25-item <strong>Chinese</strong> LPIobserver.<br />

Three factors were found and accounted for 58.6% <strong>of</strong> <strong>the</strong> total variance,<br />

but one item was discarded owing to factor loading less than .40. Through initial<br />

item and factor analyses, six items were removed.<br />

<strong>Psychometric</strong> <strong>Properties</strong> after Deleting Six Items<br />

The Cronbach’s alpha <strong>of</strong> <strong>the</strong> 24-item <strong>Chinese</strong> LPI-observer was .96,<br />

and .92, .92, and .87 for <strong>the</strong> three subscales, respectively. The interitem<br />

correlation coefficients <strong>of</strong> all items within each subscale were greater than .30 and<br />

Published by The Berkeley Electronic Press, 2007<br />

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International Journal <strong>of</strong> Nursing Education Scholarship, Vol. 4 [2007], Iss. 1, Art. 23<br />

less than .80. The corrected item-total correlation coefficients were all greater<br />

than .30. A PAF analysis with direct oblimin rotation was performed again to<br />

assess construct validity <strong>of</strong> <strong>the</strong> 24 items. Three factors were extracted and<br />

explained 59.5% <strong>of</strong> <strong>the</strong> total variance. All <strong>of</strong> <strong>the</strong> 24 items demonstrated moderate<br />

to strong loadings (> .40). The pattern matrix showed that most <strong>of</strong> <strong>the</strong> items were<br />

loaded only on one factor, indicating <strong>the</strong> items in a factor were well clustered (see<br />

Table 1). The Pearson product moment correlation was computed to assess <strong>the</strong><br />

relationship between <strong>the</strong> <strong>Chinese</strong> MLQ-5X and <strong>the</strong> <strong>Chinese</strong> LPI-observer for<br />

concurrent validity. The <strong>Chinese</strong> LPI total and subscales were highly and<br />

significantly correlated with <strong>the</strong> transformational leadership subscale <strong>of</strong> <strong>the</strong><br />

<strong>Chinese</strong> MLQ-5X (r = .724 to .874, p < .01). The laissez-faire leadership<br />

subscale , an inappropriate and ineffective way to lead subordinates, was<br />

negatively and significantly correlated with <strong>the</strong> <strong>Chinese</strong> LPI-observer total and<br />

subscales (r = -.371 to r = -.535, p < .01).<br />

DISCUSSION<br />

Initial <strong>Psychometric</strong> <strong>Properties</strong> <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI-Observer<br />

Although <strong>the</strong> LPI is one <strong>of</strong> most well-developed and used instruments for<br />

examining leadership behavior, <strong>the</strong>re is a need for assessing psychometrics and<br />

cultural appropriateness in which <strong>the</strong> LPI is used in a cross-cultural study. The<br />

Cronbach’s alpha coefficients for <strong>the</strong> original <strong>Chinese</strong> LPI-observer total and<br />

subscales were greater than .80, indicating adequate internal consistency. Most <strong>of</strong><br />

nursing research using <strong>the</strong> LPI did not report its psychometric properties.<br />

Tourangeau and McGilton’s (2004) study demonstrated acceptable reliability<br />

(α > .80) in using <strong>the</strong> LPI. For item analysis, item 11 challenges <strong>the</strong> way we do<br />

things at work had low correlation coefficients (< .30) with every item. A possible<br />

reason may stem from <strong>the</strong> word “challenges,” because it is related to <strong>the</strong><br />

perception <strong>of</strong> “criticizes subordinates’ performance.” Taiwan’s nursing faculty<br />

perceived this kind leadership behavior as serving to suppress <strong>the</strong>ir selfdetermination<br />

and autonomy in <strong>the</strong>ir positions. A relatively high correlation<br />

between item 20 gives members lots <strong>of</strong> appreciation and support and item 15<br />

praises people for a job well done may indicate that both items present <strong>the</strong> same<br />

meaning <strong>of</strong> recognition <strong>of</strong> contributions. Thus, items 11 and 20 were deleted<br />

through <strong>the</strong> item-level analysis.<br />

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Table 1<br />

Factor Solution <strong>of</strong> <strong>the</strong>24-Item <strong>Chinese</strong> LPI-Observer<br />

Factor/Item Communalities Factor Loadings<br />

Pattern Matrix a<br />

Factor 1: Enabling o<strong>the</strong>rs to act<br />

LPI 8: treats o<strong>the</strong>rs with respect<br />

LPI 18: fosters cooperative relationships<br />

LPI 13: supports <strong>the</strong>ir own decisions<br />

LPI 23: creates mutual trust<br />

LPI 28: provides a sense <strong>of</strong> ownership<br />

LPI 3: involves in planning actions<br />

LPI 21: asks "what can we learn?"<br />

LPI 9: breaks projects into steps<br />

Factor 2: Inspiring a shared vision<br />

LPI 26: lets o<strong>the</strong>rs take risks<br />

LPI 2: describes <strong>the</strong> kind <strong>of</strong> future<br />

LPI 27: be enthusiastic about possibilities<br />

LPI 29: sets clear goals and plans<br />

LPI 1: seeks challenging opportunities<br />

LPI 24: be consistent in practicing values<br />

LPI 6: stays up to date<br />

LPI 30: tells <strong>the</strong> good work done<br />

LPI 4: clear about leadership philosophy<br />

LPI 17: shows long-term future interests<br />

LPI 12: communicates hopeful outlook<br />

Factor 3: Encouraging <strong>the</strong> heart<br />

LPI 5: celebrates accomplishments<br />

LPI 25: finds ways to publicly celebrate<br />

LPI 14: adheres to <strong>the</strong> values<br />

LPI 15: praises people for job done<br />

LPI 10: recognizes people’s contributions<br />

Eigenvalue: 12.27<br />

.663<br />

.786<br />

.651<br />

.779<br />

.677<br />

.471<br />

.499<br />

.631<br />

Eigenvalue: 2.09<br />

.536<br />

.610<br />

.668<br />

.677<br />

.438<br />

.353<br />

.533<br />

.464<br />

.594<br />

.666<br />

.568<br />

Eigenvalue: 1.10<br />

.667<br />

.610<br />

.452<br />

.696<br />

.593<br />

% <strong>of</strong> variance: 49.5<br />

.855<br />

.820<br />

.795<br />

.763<br />

.657<br />

.556<br />

.522<br />

.444<br />

% <strong>of</strong> variance: 7.0<br />

.747<br />

.724<br />

.713<br />

.635<br />

.623<br />

.607<br />

.552<br />

.520<br />

.486<br />

.465<br />

.426<br />

% <strong>of</strong> variance: 2.9<br />

.757<br />

.675<br />

.449<br />

.434<br />

.414<br />

Note. LPI = <strong>Leadership</strong> <strong>Practices</strong> Inventory (1 st ed.). Only brief description <strong>of</strong> each item is<br />

provided. Copyright is reserved by Posner, B. Z. and Kouzes, J. M. (1988).<br />

a Extraction method: Principal Axis Factoring. Rotation method: Oblimin with Kaiser<br />

normalization.<br />

Chen and Baron: <strong>Psychometric</strong>s <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI<br />

Published by The Berkeley Electronic Press, 2007<br />

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International Journal <strong>of</strong> Nursing Education Scholarship, Vol. 4 [2007], Iss. 1, Art. 23<br />

For construct validity, three factors were extracted from <strong>the</strong> 28-item<br />

<strong>Chinese</strong> LPI-observer using PAF analysis with direct oblimin rotation, and<br />

accounted for 57.3% <strong>of</strong> <strong>the</strong> total variance. The item 7 shares future dream, item<br />

16 looks for ways to improve, item 19 talks about guiding beliefs, and item 22<br />

forecasts <strong>the</strong> expected future did not meet <strong>the</strong> criterion <strong>of</strong> factor loading greater<br />

than .40 and were eliminated. The possible reason for dropping <strong>the</strong>se four items is<br />

that Taiwan’s nursing faculty perceived little about nursing leaders’ vision and<br />

belief related to specific leadership behavior. Taiwan’s nursing deans or directors<br />

may face restrictions in <strong>the</strong>ir decisions from <strong>the</strong>ir presidents and deans <strong>of</strong><br />

academic affairs; in turn, nursing deans or directors may not fully display<br />

conviction in <strong>the</strong>ir commitments, owing to limited authority (Chen, Beck, &<br />

Amos, 2005). Three factors <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI are consistent with Tourangeau<br />

and McGilton’s (2004) study in which <strong>the</strong> third edition <strong>of</strong> <strong>the</strong> LPI was used and in<br />

which three new factors named cognitive, behavioral, and supportive practices<br />

were proposed. As a result <strong>of</strong> deleting four items through factor analyses,<br />

psychometric properties were reexamined to demonstrate <strong>the</strong> improvement <strong>of</strong> <strong>the</strong><br />

24-item <strong>Chinese</strong> LPI-observer.<br />

<strong>Psychometric</strong> <strong>Properties</strong> after Deleting Six Items<br />

The Cronbach’s alpha coefficient for <strong>the</strong> 24-item <strong>Chinese</strong> LPI-observer<br />

total scale was .96, which was <strong>the</strong> same as <strong>the</strong> original 30-item <strong>Chinese</strong> LPI and<br />

consistently demonstrated acceptable reliability. For item analysis, all <strong>of</strong> <strong>the</strong><br />

interitem and corrected item-total correlation coefficients showed acceptable<br />

homogeneity within <strong>the</strong>se 24 items. In factor analysis, <strong>the</strong> three same factors were<br />

extracted that explained 59.5% <strong>of</strong> <strong>the</strong> total variance, which was close to <strong>the</strong><br />

results <strong>of</strong> Posner and Kouzes’ (1988, 1993) studies. The results <strong>of</strong> concurrent<br />

validity show that <strong>the</strong> <strong>Chinese</strong> LPI-observer total and subscales are highly and<br />

positively correlated with <strong>the</strong> transformational leadership subscale <strong>of</strong> <strong>the</strong> <strong>Chinese</strong><br />

MLQ-5X, which means that both scales represent <strong>the</strong> similar concepts <strong>of</strong><br />

leadership behavior. Concurrent validity is also supported by <strong>the</strong> significantly<br />

negative relationships among <strong>the</strong> <strong>Chinese</strong> LPI-observer total and subscales and<br />

<strong>the</strong> laissez-faire subscale <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> MLQ-5X. The laissez-faire style is a<br />

nonleadership factor-nontransformational and nontransactional.<br />

Interpretation <strong>of</strong> Three New Factors<br />

Factors were named according to items with higher loadings and item<br />

meaning. Factor one, enabling o<strong>the</strong>rs to act, contains eight items (items 3, 8, 9, 13,<br />

18, 21, 23, and 28) from most <strong>of</strong> Posner and Kouzes’ (1988) original leadership<br />

practices <strong>of</strong> enabling o<strong>the</strong>rs to act (see Table 2). This factor is similar to <strong>the</strong><br />

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Chen and Baron: <strong>Psychometric</strong>s <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI<br />

behavioral practices proposed from Tourangeau and McGilton’s (2004) study,<br />

which interprets that a visionary leader fosters collaboration with subordinates,<br />

provides individual consideration, and empowers o<strong>the</strong>rs to work more efficiently<br />

and productively. Leaders in a collectivist culture such as <strong>the</strong> <strong>Chinese</strong> society are<br />

morally responsible for taking care <strong>of</strong> <strong>the</strong>ir subordinates (Bass & Avolio, 2000).<br />

Taiwan’s culture is still influenced by Confucian and Taoist traditions with <strong>the</strong><br />

expectation that leaders set a role model to enable <strong>the</strong>ir subordinates’ performance<br />

(Chen & Baron, 2006).<br />

Factor two named inspiring a shared vision, consists <strong>of</strong> 11 items (items 1,<br />

2, 4, 6, 12, 17, 24, 26, 27, 29, and 30) from most <strong>of</strong> Posner and Kouzes’ original<br />

(1988) three leadership practices <strong>of</strong> inspiring a shared vision, challenging <strong>the</strong><br />

process, and modeling <strong>the</strong> way. This factor reflects that Taiwan’s female leaders<br />

tend to be supportive toward <strong>the</strong>ir subordinates and are willing to motivate <strong>the</strong><br />

working process by sharing future vision (Pan, Liang, & Chen, 2000). This factor<br />

is similar to <strong>the</strong> cognitive practice proposed in Tourangeau and McGilton’s (2004)<br />

study.<br />

Five items (items 5, 10, 14, 15, and 25) compose factor three, encouraging<br />

<strong>the</strong> heart, which is from Posner and Kouzes’ (1988) original leadership practices<br />

<strong>of</strong> encouraging <strong>the</strong> heart. This factor is supported by Zagorsek et al. (2004) study,<br />

indicating that women engage in <strong>the</strong> leadership practices enabling o<strong>the</strong>rs to act<br />

and encouraging <strong>the</strong> heart more than men. Taiwan’s female leaders are<br />

potentially more capable <strong>of</strong> providing encouragement to <strong>the</strong>ir subordinates<br />

because <strong>of</strong> <strong>the</strong>ir female roles and responsibility given from a traditional <strong>Chinese</strong><br />

society. They tend to be more empa<strong>the</strong>tic with <strong>the</strong>ir followers’ need and be<br />

willing to model <strong>the</strong> way for <strong>the</strong>ir followers.<br />

Published by The Berkeley Electronic Press, 2007<br />

11


Table 2<br />

International Journal <strong>of</strong> Nursing Education Scholarship, Vol. 4 [2007], Iss. 1, Art. 23<br />

Construct Factors <strong>of</strong> <strong>the</strong> LPI<br />

The 24-item <strong>Chinese</strong> LPI a in this<br />

study<br />

Factor 1: Enabling o<strong>the</strong>rs to act<br />

LPI c 3 (9), 8 (14), 9 (21), 13 (19),<br />

18 (4), 21 (18), 23 (24), 28<br />

(29)<br />

Factor2:Inspiring a shared vision<br />

LPI c 1 (3), 2 (7), 4 (26), 6 (2), 12<br />

(27), 17 (17), 24 (11), 26<br />

(28), 27 d , 29 (23), 30 (20)<br />

Factor 3: Encouraging <strong>the</strong> heart<br />

LPI c 5 (20), 10 (15), 14 (6), 15<br />

(5), 25 (25)<br />

Posner and Kouzes (1988, 1993) a :<br />

30 items<br />

Factor: Enabling o<strong>the</strong>rs to act<br />

LPI 3, 8, 13, 18, 23, 28<br />

Factor: Modeling <strong>the</strong> way<br />

LPI 9<br />

Factor: Challenging <strong>the</strong> process<br />

LPI 21<br />

Factor: Inspiring a shared vision<br />

LPI 2, 12, 17, 27<br />

Factor: Challenging <strong>the</strong> process<br />

LPI 1, 6, 26<br />

Factor: Modeling <strong>the</strong> way<br />

LPI 4, 24, 29<br />

Factor: Encouraging <strong>the</strong> heart<br />

LPI 30<br />

Factor: Encouraging <strong>the</strong> heart<br />

LPI 5, 10, 15, 25<br />

Factor: Modeling <strong>the</strong> way<br />

LPI 14<br />

Tourangeau and<br />

McGilton (2004) b :<br />

27 items<br />

Factor: Behavioral<br />

LPI 3, 4, 8, 9, 13,<br />

14, 18, 19, 23,<br />

24, 29<br />

Factor: Cognitive<br />

LPI 1, 2, 6, 7, 11,<br />

12, 17, 21, 22,<br />

27<br />

Factor: Supportive<br />

LPI 5, 10, 15, 20,<br />

25, 30<br />

Note. LPI = <strong>Leadership</strong> <strong>Practices</strong> Inventory.<br />

a st<br />

The 1 edition <strong>of</strong> <strong>the</strong> LPI which is a 5-point Likert scale rating from 1 (seldom) to 5 (very <strong>of</strong>ten).<br />

b rd<br />

The 3 edition <strong>of</strong> <strong>the</strong> LPI which is a 10-point Likert scale rating from 1 (almost never) to 10<br />

(almost always).<br />

c st rd<br />

LPI item number, <strong>the</strong> 1 edition (item number, <strong>the</strong> 3 edition). For example, LPI 3 (9) means<br />

item number 3 <strong>of</strong> <strong>the</strong> first edition is <strong>the</strong> same as item number 9 in <strong>the</strong> third edition <strong>of</strong> <strong>the</strong> LPI.<br />

d st rd<br />

LPI 27 in <strong>the</strong> 1 edition was deleted from <strong>the</strong> 3 edition <strong>of</strong> <strong>the</strong> LPI.<br />

CONCLUSIONS<br />

The 24-item <strong>Chinese</strong> LPI with three factors consistently demonstrated<br />

sound psychometric properties. This is a culturally appropriate instrument and it<br />

can be used in Taiwan’s nursing education. The results <strong>of</strong> psychometric<br />

examination can provide practical and empirical evidence for instrument<br />

modification when applied in populations with different cultures and languages.<br />

The research regarding leadership behavior <strong>of</strong> nursing deans and directors is<br />

relatively new in Taiwan’s nursing education. As well, most <strong>the</strong>ories and<br />

measurements applied in leadership research originate from Western countries.<br />

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Chen and Baron: <strong>Psychometric</strong>s <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI<br />

Fur<strong>the</strong>r studies are recommended to test <strong>the</strong> reliability and validity <strong>of</strong> <strong>the</strong> 24-item<br />

<strong>Chinese</strong> LPI. The knowledge obtained from <strong>the</strong> psychometric and cultural<br />

examinations <strong>of</strong> <strong>the</strong> <strong>Chinese</strong> LPI in this study can contribute to <strong>the</strong> development<br />

<strong>of</strong> leadership concept in Taiwan’s nursing education, and provide an example for<br />

conducting a cross-cultural study using Western instruments.<br />

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