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Table 5 Psychometric evaluation of the TGEI

From: Should the PBL tutor be present? A cross-sectional study of group effectiveness in synchronous and asynchronous settings

SubscalesHomogeneity (Coef. H)Cronbach’s alphaNumber of itemsNumber of casesa
Cognitive aspects0.410.807218
Motivational aspects0.380.797211
Demotivational aspects0.400.735221
Total TGEIb,0.170.7820197
  1. aIncomplete cases discarded for each scale
  2. bIncluding the single ov;erall productivity rating item. Negative worded items 15–19 reversed