Antipsychotic treatment and the Rorschach Perceptual Thinking Index (PTI) in psychotic disorder patients: Effects of treatment

Psychiatry Res. 2017 May:251:294-297. doi: 10.1016/j.psychres.2017.02.032. Epub 2017 Feb 16.

Abstract

The Rorschach-based Perceptual Thinking Index (PTI) is used to identify and rate features of psychotic disorders, but effects of antipsychotic treatment on such ratings is not clear. Accordingly, we examined potential effects of antipsychotic drugs on PTI measures in 114 patients with a psychotic or bipolar-I disorder. Use and doses of antipsychotic drugs (as chlorpromazine-equivalent [CPZ-eq] mg/day) were unrelated to PTI total or subscale scores in any diagnostic group. PTI scores were independently and significantly associated with psychotic symptomatic severity (PANSS score) and less with female sex. These findings support the validity and value of the PTI in identifying features of psychosis even in the presence of antipsychotic treatment.

Keywords: Antipsychotics; Perceptual Thinking Index (PTI); Psychosis; Rorschach.

MeSH terms

  • Adolescent
  • Adult
  • Antipsychotic Agents / therapeutic use*
  • Bipolar Disorder / drug therapy*
  • Bipolar Disorder / psychology*
  • Chlorpromazine / therapeutic use
  • Dose-Response Relationship, Drug
  • Female
  • Humans
  • Male
  • Middle Aged
  • Perception / drug effects*
  • Psychiatric Status Rating Scales / statistics & numerical data
  • Psychometrics / statistics & numerical data
  • Psychotic Disorders / drug therapy*
  • Psychotic Disorders / psychology*
  • Reality Testing
  • Rorschach Test* / statistics & numerical data
  • Schizophrenia / drug therapy*
  • Schizophrenic Psychology*
  • Statistics as Topic
  • Thinking / drug effects*

Substances

  • Antipsychotic Agents
  • Chlorpromazine