Format effects in two teacher rating scales of hyperactivity

The object of this study was to investigate the effect of differences in format on the precision of teacher ratings and thus on the reliability and validity of two teacher rating scales of children's hyperactive behavior. Teachers (N=242) rated a sample of children in their classrooms using rating scales assessing similar attributes with different formats. For a sub-sample the rating scales were readministered after 2 weeks. The results indicated that improvement can be made in the precision of teacher ratings that may be reflected in improved reliability and validity.This research was supported by grants from the Spencer Foundation and the National Institute of Mental Health (MH 29495). A somewhat different version of this paper was presented at the annual convention of the American Educational Research Association, Toronto, Canada, March 1978. The author thanks Nadine Lambert and Leonard Marascuilo for their assistance in the preparation of this paper.