| Imagery vividness rating scales were anchored with photographs to investigate the effect this would have on subjective imagery vividness ratings. Male and female undergraduate subjects (N = 210) rated their imagery evoked by either the Questionnaire Upon Mental Imagery (QMI) or a revision of the QMI which contained only visual imagery items (Carter revision). Two objective measures of imagery ability, the Gottschaldt Figures and Thurstone Cards, were also administered to evaluate the content validity of the QMI and the Carter revision. The results indicated that subjects' ratings of their imagery vividness were unrelated to the type of rating scale anchor used. Only low correlations were found between the QMI and the Carter revision and the objective imagery measures. The findings, which question the validity of the QMI as measure of mental imagery vividness, are discussed. |
