The predictive validity of the parameter estimates can
be assessed by use of a cross-validated redundancy index
or a Stone–Geisser Q2-test (Geisser, 1974; Stone, 1974).
As PLS models lack an index for goodness of fit statistics,
Tenenhaus et al. (2005) and Vandenbosch (1996) argue that
besides the reliability and validity of constructs, the significance
of variance explained and positive Q2s for all but one
of the constructs provide sufficient evidence of model fit.
The results in Table 5 suggest that the model has predictive
relevance.