Benfield, J.A., Nurse, G.A., Jakubowski, R., Gibson, A., Taff, D ...

Benfield et al. 9
Method
Participants. Some 438 participants were recruited through a university
research pool to complete the NSS-SF. Sample demographics are shown in
Table 1.
Materials, Measures, and Procedure. Participants were recruited for a
Mass Testing Survey to partially fulfill a course research requirement. Participants
completed the five-item NSS-SF along with a brief demographic
questionnaire and several other measures unrelated to this report.
Results and Discussion
Confirmatory factor analysis was conducted on the five-item NSS-SF to
ensure that it conformed to the unified structure demonstrated in the original
NSS within acceptable boundaries related to model fit. That was indeed the
case with fit indices being acceptable for the anticipated single-factor structure
(comparative fit index [CFI] = .97; root mean square error approximation
[RMSEA] = .078). Factor loadings and internal consistency (α) were
similar to Study 1 findings and are reported in Table 2.
With a consistent factor structure and replicated evidence of internal consistency,
the five-item NSS-SF appeared to be operating in much the same way as
the original NSS. However, additional tests of validation were necessary to
ensure that the measure performed similarly to its longer counterpart.
Study 3
The first two studies showed that the NSS-SF has the same factor structure
of the original scale and is internally consistent. One of the remaining questions
regarding temporal consistency was tested in Study 3 using a student
sample and a 5-week (35-day) delay between scale administrations.
Method
Participants. Undergraduate students (n = 49) completed the NSS-SF for
course research credit. Sample demographics are listed in Table 1.
Measurement and Procedure. Participants completed the NSS-SF on
two separate occasions spaced 5 weeks (35 days) apart. Participants were
debriefed following each measurement occasion.