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Related Experiment Videos

The Genain Quadruplets: psychological studies.

A F Mirsky, L E DeLisi, M S Buchsbaum

    Psychiatry Research
    |September 1, 1984
    PubMed
    Summary

    The Genain Quadruplets, genetically identical individuals with schizophrenia, show stable functioning and improved attention over time, likely due to treatment. Variable illness expression may stem from biochemical factors and brain pathology.

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    Area of Science:

    • Psychiatry
    • Behavioral Neuroscience
    • Genetics

    Background:

    • The Genain Quadruplets, monozygous twins with schizophrenia, were previously studied (1955-1958) to explore nature vs. nurture in schizophrenia.
    • Genetic identity contrasts with unequal disorder expression, prompting further investigation into environmental and biological factors.

    Observation:

    • A follow-up study (1981) compared the quadruplets' status to earlier assessments.
    • Newer behavioral and neurobiological techniques were employed to investigate variable schizophrenia expression.

    Findings:

    • The Genain Quadruplets maintained stable adult functioning, with improved attentional test scores compared to 1958.
    • Improvements are attributed to long-term neuroleptic medication and supportive care.
    • Variable biochemical findings and differing cerebral pathology are hypothesized to cause unequal schizophrenia expression.

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    Implications:

    • Long-term treatment, including neuroleptics, can support stable functioning in individuals with schizophrenia.
    • Understanding the interplay of unique biochemical profiles and brain pathology is crucial for explaining variable disease manifestation.
    • Further research into neurobiology and genetics can illuminate the complex etiology of schizophrenia.