An instrument has been developed to provide tutors with feedback about
their performance in problem-based tutorial groups. This questionnair
e consists of 33 statements reflecting the behaviour of the tutor in t
he tutorial group when students analyse the case and generate learning
issues and the behaviour of the tutor when students report back to th
e tutorial group about their self-study. The statements are grouped on
theoretical dimensions found in the literature about co-operative lea
rning and problem-based learning. This study focuses on the validity a
nd the reliability of this instrument. Confirmatory factor analysis sh
owed that a four-factor model showed a weak fit, whereas each separate
factor fitted the data reasonably well. The four factors are: (1) ela
boration; (2) directing the learning process; (3) integration of knowl
edge and (4) stimulating interaction and individual accountability. Th
ese factors were strongly correlated with the overall judgement of the
tutor at the end of the unit, so the concurrent validity of this inst
rument was high. Generalizability studies indicated that the rating sc
ales provide reliable information with a sample size of student respon
ses falling within the range of real tutorial group sizes. The results
of this study show that the instrument for providing tutors with feed
back is valid and reliable. This questionnaire can be used in staff de
velopment activities and also provides needs assessment for faculty de
velopment.