Few studies have investigated the imagery experiences that occur during scale responses on the mental imagery vividness scale. e current study examined and categorizes such imagery experiences. A total of 68 adults were presented with visual items of the Japanese version of the Plymouth Sensory Imagery Questionnaire (Psi-Q) online. ey were then asked to write freely about the imagery experiences. e results of the KJ method revealed three major categories of such experiences: cases in which i) only visual imagery, ii) unspeci ed sensory modality imagery, and iii) an emotional experience occurred. Next, the visual imagery was classi ed along six axes (movement, source, realism, presence, perspective, and range of imagined objects). According to these results, various imagery experiences occurred during the scale responses. Future studies should examine the in uence of such experiences on vividness measures.