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The Genain quadruplets.

A F Mirsky1, O W Quinn

  • 1Laboratory of Psychology and Psychopathology, National Institute of Mental Health, Bethesda, MD 20892.

Schizophrenia Bulletin
|January 1, 1988
PubMed
Summary
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The Genain quadruplets, identical twins with schizophrenia, showed varying symptom severity. Long-term follow-up revealed medication effects on cognition and highlighted the value of studying genetic influences on mental health disorders.

Area of Science:

  • Psychiatry
  • Genetics
  • Psychology

Background:

  • The Genain quadruplets are identical twins studied for schizophrenia concordance and severity discordance.
  • Previous research by Rosenthal and Quinn (1963) established initial findings on their condition.

Purpose of the Study:

  • To re-evaluate the Genain quadruplets in adulthood, assessing long-term outcomes and medication effects.
  • To analyze changes in psychological test results over two decades and compare them with earlier findings.

Main Methods:

  • Longitudinal study involving psychological testing of the Genain quadruplets in their twenties and again at age 51.
  • Assessment of medication effects on attention and memory.
  • Differential analysis of neuroleptic drug responses.

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Main Results:

  • The quadruplets' current functioning is comparable to their best adult periods.
  • Medication significantly impacted attention and memory.
  • Differential drug responses and other findings led to revised conclusions regarding severity discordance.

Conclusions:

  • Long-term follow-up studies are crucial for understanding genetic influences on mental disorders.
  • Repeated assessments in genetically related individuals provide valuable insights into disease progression and treatment response.