Table 3.

Alternative models tested

Model A	Five-factor model corresponding to Fig. 1
Model B	Four-factor model, combining the integrated and identified types of regulation which have proven difficult to separate in previous research
Model C	Five-factor model as Model B but dividing external regulation into a social and an economic subfactor
Model D	Two-factor model, differentiating autonomous (intrinsic motivation, integrated/identified regulation; AUT) and controlled (introjected, external regulation; CTRL) motivation