The effects of instructions on subjects' imagery questionnaire scores

Groups of about 35 participants were given neutral, low and high motivating instructions before completing the Shortened Form of Betts’ Questionnaire upon Mental Imagery (QMI). The results for imaging scores in all 7 sensory modalities tapped by this questionnaire indicated that the instructions significantly influenced participants’ responses. The data were interpreted as supporting the hypo-thesis that perceived desirability of claiming intense images contaminates responses on the Betts’ QMI.