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Related Experiment Videos

Estrogen and memory in a transsexual population

C Miles1, R Green, G Sanders

  • 1City University, London, United Kingdom. C.L.Miles@city.ac.uk

Hormones and Behavior
|November 4, 1998
PubMed
Summary

Estrogen treatment in male-to-female transsexuals improved verbal memory performance on the Paired Associate Learning (PAL) task. This suggests a specific role for estrogen in enhancing verbal memory in individuals assigned male at birth.

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Area of Science:

  • Neuroendocrinology
  • Cognitive Neuroscience
  • Psychopharmacology

Background:

  • Estrogen is known to influence cognitive functions, particularly memory, in women.
  • The effects of estrogen on cognition in individuals assigned male at birth are less understood.
  • Hormone replacement therapy, including estrogen, is a key component of gender-affirming care for male-to-female transsexuals.

Purpose of the Study:

  • To investigate the specific effects of administered estrogen on verbal memory and other cognitive tasks in male-to-female transsexuals.
  • To compare cognitive performance between transsexual individuals receiving estrogen treatment and a control group awaiting treatment.
  • To explore potential sex-specific differences in estrogen's cognitive effects.

Main Methods:

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  • A comparative study design was employed, involving male-to-female transsexuals undergoing estrogen treatment (n=29) and a control group awaiting treatment (n=30).
  • Cognitive performance was assessed using tasks including Paired Associate Learning (PAL), Digit Span, Mental Rotations, and Controlled Associations.
  • Statistical analyses were performed to compare performance between the estrogen-treated and control groups, controlling for age, mood, and general intellectual ability.

    • Main Results:

    • The estrogen-treated group demonstrated significantly higher scores on the Paired Associate Learning (PAL) task compared to the control group (P < 0.05).
    • No significant differences were found between groups on the Digit Span memory task, Mental Rotations, or Controlled Associations.
    • Age, mood, and general intellectual ability did not account for the observed differences in PAL performance.

    Conclusions:

    • Administered estrogen specifically enhances performance on verbal memory tasks, such as PAL, in male-to-female transsexuals.
    • These findings align with previous research on estrogen's effects on verbal memory in women.
    • The results suggest differential effects of estrogen on various cognitive domains and highlight potential sex differences in estrogen's neurocognitive influence.