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Cash or Card: Consumer Perceptions of Payment Modes - Scholarly ...

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used to measure individual constructs. F<strong>or</strong> each <strong>of</strong> the item, the closer the statistics to one is<br />

better, and a modest threshold is 0.70 and least is .50 (See Table 6.11).<br />

108<br />

Table 6.12: Demonstrating Convergent Validity in Pretest-Two<br />

Composite<br />

Reliability<br />

Cronbach<br />

Alpha<br />

Average Variance<br />

Extracted<br />

Positive Emotions 0.80 0.87 0.75<br />

Spending Control 0.50 0.62 0.52<br />

Liquidity 0.70 0.79 0.65<br />

Negative Emotions 0.64 0.69 0.70<br />

Usage/behaviour 0.60 0.60 0.65<br />

Status/Pleasure 0.65 0.60 0.66<br />

Gift 0.61 0.63 0.73<br />

Convergent validity is supp<strong>or</strong>ted on composite reliability measure f<strong>or</strong> PMP Scale though the<br />

“Spending Control’ dimension is slightly weak. The ‘Spending Control’ dimension captures<br />

the notion <strong>of</strong> mental accounting, a view well supp<strong>or</strong>ted in behavioural economics literature.<br />

Another reason f<strong>or</strong> retaining the spending control construct relates to the sample<br />

characteristics. These are young business students, highly familiar with card use per se. This<br />

construct needs further expl<strong>or</strong>ation on diverse samples as Churchill (1979) recommends re-<br />

examination <strong>of</strong> constructs f<strong>or</strong> reliability and validity measures using independent and m<strong>or</strong>e<br />

diverse data set.<br />

F<strong>or</strong>nell and Larcker (1981) suggest using average variance extracted to assess convergent<br />

validity. The average variance extracted (AVE) statistics clearly exceeded 0.50 f<strong>or</strong> all<br />

dimensions; the highest being f<strong>or</strong> “Positive Emotions” construct and lowest was on<br />

“Spending Control’. A threshold <strong>of</strong> greater than 0.50 is recommended (Chin, 1998; F<strong>or</strong>nell<br />

and Larcker, 1981). That is, 50% <strong>or</strong> m<strong>or</strong>e variance should account f<strong>or</strong> each construct. This<br />

indicates acceptable convergent validity f<strong>or</strong> the constructs (physicality, control, disposable,<br />

attribute and modernity).<br />

The discriminant validity <strong>of</strong> the scale was investigated via two procedures. First, by ensuring<br />

that the c<strong>or</strong>relation between constructs is less than 1 (Bagozzi and Heatherton, 1994). This is<br />

done by examining the confidence interval surrounding the estimate. If the c<strong>or</strong>relation plus <strong>or</strong><br />

minus two standard err<strong>or</strong>s produces the value <strong>of</strong> 1, discriminant validity is not supp<strong>or</strong>ted<br />

(Sweeney and Soutar, 2001, p.210). The c<strong>or</strong>relations between constructs were estimated, the

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