Abstract:
The purpose of this study was to examine the psychometric properties (i.e.,
factorial validity, measurement invariance, and reliability) of the Grit-Original scale
(Grit-O) within the Netherlands. The Grit-O scale was subjected to a competing
measurement modeling strategy that sequentially compared both independent cluster
model confirmatory factor analytical- and exploratory structural equation modeling
approaches. The results showed that both a two first order, bi-factor structure as
well as a less restrictive two factor ESEM factorial structure best-fitted the data. The
instrument showed to be reliable at both a lower- (Cronbach’s alpha) and upperlevel
(composite reliability) limit. However, measurement invariance between genders
could only be established for the B-ICM-CFA model. Finally, concurrent validity was
established through relating the GRIT-O to task performance. The linear use of the Grit-O
scale should therefore carefully be considered.
