Iowa Sleep Experiences Scale (ISES)

FREE for use with an Inquisit Lab or Inquisit Web license.

Available Test Forms

Iowa Sleep Experiences Survey (ISES)

A 24-item self-report measure of various sleep- and dream-related phenomena developed by Watson (2001)
Duration: 3 minutes
(Requires Inquisit Lab)
(Run with Inquisit Web)
Last Updated


Google ScholarSearch Google Scholar for peer-reviewed, published research using the Inquisit Iowa Sleep Experiences Scale (ISES).

Watson, D. (2001). Dissociations of the night: Individual differences in sleep-related experiences and their relation to dissociation and schizotypy. Journal of Abnormal Psychology, 110, 526-535.

Watson, D. (2003). To dream, perchance to remember: Individual differences in dream recall. Personality and Individual Differences, 34, 1271-1286.

Giesbrecht, & Merckelbach. (2004). Subjective sleep experiences are related to dissociation. Personality and Individual Differences, 37(7), 1341-1345.

Fassler, Knox, & Jay Lynn. (2006). The Iowa Sleep Experiences Survey: Hypnotizability, absorption, and dissociation. Personality and Individual Differences, 41(4), 675-684.

Knox, & Lynn. (2014). Sleep experiences, dissociation, imaginal experiences, and schizotypy: The role of context. Consciousness and Cognition, 23, 22-31.

Watson, D., Stasik, S., Ellickson-Larew, S., Stanton, K., & Lynn, Steven Jay. (2015). Explicating the Psychopathological Correlates of Anomalous Sleep Experiences. Psychology of Consciousness: Theory, Research, and Practice, 2(1), 57-78.