# Mining the Gaps: Rethinking Divergence Between Biological and Self‐Report Measures in the Study of Sexual Diversity

**Authors:** Lisa M. Diamond

PMC · DOI: 10.1002/ajhb.70201 · American Journal of Human Biology · 2026-01-21

## TL;DR

This paper argues that sexual orientation should be viewed as a complex set of behaviors and biological factors rather than a single trait.

## Contribution

The paper introduces a new conceptual framework for sexual orientation based on biodivergence and multiple biobehavioral patterns.

## Key findings

- Biological responses to erotic stimuli often differ from self-reported sexual identities and arousal.
- Genetic research shows no single genotype underlies same-gender expression.
- Population data reveal increasingly fluid and diverse forms of sexual orientation globally.

## Abstract

Over the past several decades, scholars have conducted hundreds of studies investigating potential biomarkers of sexual orientation, such as genes, neuroanatomical features, and patterns of physiological response to sexual stimuli. The findings have been inconsistent: Biological measures sometimes converge with—but just as often diverge from—individuals' self‐reported sexual attractions, behaviors, and identities. For example, numerous studies show that individuals' biological responses to erotic stimuli frequently diverge from their self‐reported sexual identities and self‐reported arousal to such stimuli. I argue that such cases of “biodivergence” warrant a shift in our conceptualization of sexual orientation, from seeing it as a singular and coherent phenotype to seeing it as a constellation of multiple biobehavioral patterns, with multiple and divergent causes and effects. I show that this perspective concords with recent findings from genetic research on sexual orientation, which show there is no single genotype underlying patterns of same‐gender expression, and also concords with recent population data showing increasingly varied and fluid forms of sexual diversity around the globe that challenge the notion of sexual orientation as a singular and coherent sexual phenotype.

## Full-text entities

- **Genes:** OXT (oxytocin/neurophysin I prepropeptide) [NCBI Gene 5020] {aka OT, OT-NPI, OXT-NPI}
- **Diseases:** dilation (MESH:D002311), sexual (MESH:D050035)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

2 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12820751/full.md

## References

69 references — full list in the complete paper: https://tomesphere.com/paper/PMC12820751/full.md

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Source: https://tomesphere.com/paper/PMC12820751