Harvard University · PSYC S-1240 Psychopathology · Summer 2026
Short Response Paper 2 · Graded 2 / 2

Asymmetrical Incidence of Anxiety in Biological Females - Biopsychosocial Considerations

Evolutionary, social and biological accounts, held in generative tension.


Three accounts. One asymmetry. And the discipline of refusing to crown a winner.

The paper and its slides, walked through in full.  /  Trouble playing? Watch on YouTube ↗

The Thesis

Biology, evolutionary history and lived culture co-constitute and co-enact each other in a whole larger than any of them. The biological level must refuse coronation as some deeper or truer cause sitting beneath the others.

Three Descriptive Vantages, Not Three Competitors

The Three Accounts

Each is pitted in a generative posture of complementary vantages on a broader cross-paradigmatic phenomenon, rather than vandalised by the zero-sum games that seek to monopolise knowledge.

One · Evolutionary

The Calculus Of The False Positive

Fear systems are theorised as adaptive where calibrated to hypervigilant over-detection: a false positive costs little, a false negative can cost everything.

Extended to the question at hand, parental investment theory notes that biological females have historically borne the greater reproductive cost and caregiving demand for vulnerable offspring. That asymmetry in labour, mobility and power would afford a lower threshold for threat detection a selection advantage.

Taylor's refinement proposes a distinctively female stress response, tend-and-befriend rather than fight-or-flight: mobilising social support as a distributed defence.

LeDoux & Pine (2016); Trivers (1972); Taylor et al. (2000)
Two · Social

Artefact Within The Measurement

Where biological females have been less mobile and less physically dominant, attentiveness to nearby threat becomes not merely inheritance but trained and reinforced socialisation.

Culture also exerts coercive directives about which feelings may be expressed, and by whom. The asymmetry may therefore extend from the diagnostic process itself: differences in help-seeking, in symptom reporting, and in how clinicians evaluate distress.

The constructionist critique does tangible analytic work here. Genuine artefact is found within the measurement, without denying the veracity of the underlying distress.

Altemus et al. (2014); Carson (2026b)
Three · Biological

The Endocrine Substrate

Ovarian hormones, progesterone and oestrogen, shape anxiety directly, illustrated by the lowering and raising of vulnerability to panic across pregnancy.

This sex-specific endocrine pathway tracks through reproduction from puberty, through the menstrual cycle, pregnancy and menopause, implicated in both the up- and down-regulation of fear and stress.

It also modulates the hypothalamic-pituitary-adrenal (HPA) axis, which activates the very oxytocin systems on which the tend-and-befriend response is based. The three accounts are already entangled.

Altemus et al. (2014); Carson (2026b); Taylor et al. (2000)
The Discipline That Holds It Together

Refusing To Let Biology Win

The stakes are not trivial. In a domain where questions of sex and gender are politically charged, and rightfully so given the history of power and its asymmetric affordances of safety, welfare and equity, reductionism in either direction carries real cost: naturalising difference into fixed biology, or dissolving it into pure social construction.

The evolutionary account survives the critique of essentialism only when read correctly: as adaptive reasoning that evidences ancestral pressures, not as the destiny of any woman alive today. Read that way, it can sit alongside, and perhaps bridge, the social and the biological, rather than ratifying a status quo that is neither universally desired nor supported.

The reductionist error is not merely a preference for one level. It is the inversion by which a methodological lens is mistaken for the thing itself, an apprehension mistaken for a final ontological claim to causation.

More easily understood, perhaps, as the apocryphal moon, rather than the finger pointing at it. The territory of asymmetrical anxiety diagnosis is known only by its maps: an adaptive bias toward vigilance, carried by neuroendocrine machinery, and shaped constantly by adaptive and hyperlocal cultures, and the roles they permit.

The Mark

Faculty Feedback

2 / 2
"Situating parental investment theory and tend-and-befriend against the constructionist critique of essentialism, then refusing to let biology 'win' as the deeper cause, showed real theoretical thinking. Excellent work overall."
KG, Teaching Fellow, PSYC S-1240, Harvard University
Take It With You

The Deliverables

The paper as submitted, and the short deck that carries the argument.

The Evidence Base

References

American Psychological Association, seventh edition.

Altemus, M., Sarvaiya, N., & Neill Epperson, C. (2014). Sex differences in anxiety and depression clinical perspectives. Frontiers in Neuroendocrinology, 35(3), 320–330.
Carson, R. (2026a, June 30). Anxiety disorders [Lecture recording]. Canvas.
Carson, R. (2026b, July 2). Obsessive-compulsive and trauma-related disorders [Lecture recording]. Canvas.
Cook-Greuter, S. R. (1999). Postautonomous ego development: A study of its nature and measurement [Doctoral dissertation, Harvard Graduate School of Education].
LeDoux, J. E., & Pine, D. S. (2016). Using neuroscience to help understand fear and anxiety: A two-system framework. The American Journal of Psychiatry, 173(11), 1083–1093.
Remes, O., Brayne, C., van der Linde, R., & Lafortune, L. (2016). A systematic review of reviews on the prevalence of anxiety disorders in adult populations. Brain and Behavior, 6(7), e00497.
Taylor, S. E., Klein, L. C., Lewis, B. P., Gruenewald, T. L., Gurung, R. A. R., & Updegraff, J. A. (2000). Biobehavioral responses to stress in females: Tend-and-befriend, not fight-or-flight. Psychological Review, 107(3), 411–429.
Trivers, R. L. (1972). Parental investment and sexual selection. In B. Campbell (Ed.), Sexual selection and the descent of man, 1871–1971 (pp. 136–179). Aldine.