1. Cattell, R. B., & Eber, H. W.The sixteen personality factor questionnaire (3rd ed.). Champaign, Illinois: Institute for Personality and Ability Testing, 1957.
2. Hurlburt, R. T.Self-observation and self-control. Unpublished doctoral dissertation, University of South Dakota, 1976.
3. Hurlburt, R. T. Random sampling of cognitions and behavior.Journal of Research in Personality 1979,13 103?111.
4. Singer, J. L. Navigating the stream of consciousness: Research in daydreaming and related inner experience.American Psychologist 1975,30 727?738.
5. Singer, J. L., & Antrobus, J. S.Imaginal processes inventory. Princeton: Educational Testing Service, 1970.