Hormones and the Coolidge effect.
Level 5 - mechanism / opinion, no new human data
Narrative review incorporating animal behavioral experiments without human clinical trial data.
PubMed 28912031 · doi:10.1016/j.mce.2017.09.010
What was done
The authors reviewed the neurobiological mechanisms underlying the Coolidge effect (renewal of sexual behavior upon exposure to a novel partner) across sexes, described behavioral observations in female rats subjected to 4 hours of continuous mating (evaluating proceptive motivation versus receptive lordosis, with and without pacing), and reviewed literature on sexual habituation and dishabituation in humans.
What was found
The abstract provides no quantitative metrics (no sample sizes, effect sizes, or variance statistics). It reports that female rat proceptive behavior decreased after 4 hours of continuous mating, particularly in females unable to regulate mating pacing. This decline occurred without changes in lordosis behavior, indicating that motivational reduction was not caused by a loss of the endocrine milieu required for sexual receptivity.
Why it matters
The paper highlights female-specific neuroendocrine and behavioral mechanisms in sexual satiety and habituation, showing that female motivational behavior can decrease independently of physical receptivity.
Limits
Sample sizes, rat cohort counts, and quantitative data are absent from the abstract. Findings primarily rely on rodent mating models with limited direct translation to human psychosexual dynamics, and human comparisons are drawn from non-systematic narrative review.
Cited by
- supports In the Coolidge effect, introducing a novel mate substantially shortens the male sexual refractory period across species including rodents, chickens, and dogs.