Journal of Behavioral Medicine

, Volume 25, Issue 6, pp 605–621

Going Quasi: The Premature Disclosure Effect in a Randomized Clinical Trial

  • Shauna L. Shapiro
  • Aurelio J. Figueredo
  • Opher Caspi
  • Gary E. Schwartz
  • Richard R. Bootzin
  • Ana Maria Lopez
  • Douglas Lake
Article

DOI: 10.1023/A:1020693417427

Cite this article as:
Shapiro, S.L., Figueredo, A.J., Caspi, O. et al. J Behav Med (2002) 25: 605. doi:10.1023/A:1020693417427

Abstract

This paper describes a randomized clinical trial investigating a stress management program for women with breast cancer, which inadvertently turned quasi-experimental. Due to logistical considerations, group assignment was disclosed to participants (n = 63) prior to baseline assessment. Analyses of baseline measures unexpectedly revealed statistically significant differences between groups on psychological functioning. We suggest that what appears to be failed randomization may in fact point toward an important phenomenon which we have termed premature disclosure effect (PDE). A hierarchical regression model, developed to help explain the PDE, accounted for 47% of the variance. The findings indicate the importance of considering participant belief, preferences, and attributes when designing research protocols and interventions. Potential implications of PDE for clinical research in behavioral medicine are discussed and specific statistical methodologies suggested.

randomization quasi-experimentation control preferences mindfulness meditation 

Copyright information

© Plenum Publishing Corporation 2002

Authors and Affiliations

  • Shauna L. Shapiro
    • 1
  • Aurelio J. Figueredo
    • 1
  • Opher Caspi
    • 2
  • Gary E. Schwartz
    • 2
  • Richard R. Bootzin
    • 2
  • Ana Maria Lopez
    • 3
  • Douglas Lake
    • 3
  1. 1.Department of PsychologyUniversity of ArizonaTucson
  2. 2.Program in Integrative MedicineUniversity of ArizonaTucson
  3. 3.University of Arizona Cancer CenterTucson

Personalised recommendations