Fig. 4: The figure illustrates the degree of unidimensionality and tau equivalence violation by the VFI and TPB factors, using different methods. | Humanities and Social Sciences Communications

Fig. 4: The figure illustrates the degree of unidimensionality and tau equivalence violation by the VFI and TPB factors, using different methods.

From: Assessing scale reliability in citizen science motivational research: lessons learned from two case studies in Uganda

Fig. 4

Unidimensionality assumption violation is identified when a CFI & TLI < 0.93 and RMSEA & SRMR < 0.08 based on freely estimated CFA models, and b p < 0.05 using the F-statistic tau.test function. Conversely, tau equivalence is rejected when c p < 0.05 for both model comparisons using the chisq difference test and d the F-statistic test using tau.test.

Back to article page