The Effect of CS Administration or an R-Optimized Alternative on R–PAS Variables: A Meta-Analysis of Findings From Six Studies

Abufazel Hosseininasab, Gregory J. Meyer, Donald J. Viglione, Joni L. Mihura, Ety Berant, Ana Cristina Resende, Jennifer Reese, Mohammad Reza Mohammadi

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Controlling the number of Rorschach responses (R) as a method to reduce variability in the length of records has stimulated controversy among researchers for many years. Recently, the Rorschach Performance Assessment System (R–PAS; Meyer, Viglione, Mihura, Erard, & Erdberg, 2011) introduced an R-Optimized method to reduce variability in R. Using 4 published and 2 previously unpublished studies (N = 713), we examine the extent to which 51 Comprehensive System–based scores on the R–PAS profile pages are affected as a result of receiving Comprehensive System (CS; Exner, 2003) administration versus a version of R-Optimized administration. As hypothesized, R—the intended target of R-Optimized administration—showed reliable weighted average differences across each method of administration. As expected, its mean modestly increased and its standard deviation notably decreased. Also as hypothesized, the next largest effects were decreases in the variability (SD) of 2 variables directly related to R, R8910% and Complexity. No other reliable differences were observed. Therefore, because R-Optimized administration does not notably modify the existing CS-based normative values for other profiled R–PAS variables, the data do not support concerns that R-Optimized administration notably modifies the Rorschach task or that existing CS research data would not generalize to R–PAS. However, because R-Optimized administration reduces variability in R, it allows a single set of norms to apply readily to more people.

Original languageEnglish (US)
Pages (from-to)199-212
Number of pages14
JournalJournal of Personality Assessment
Issue number2
StatePublished - Mar 4 2019
Externally publishedYes

ASJC Scopus subject areas

  • Clinical Psychology
  • Psychiatry and Mental health
  • Health, Toxicology and Mutagenesis


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