Articles — Understanding Sociosexuality & the SOI-R

In-depth, citation-backed guides on sociosexual orientation — what it is, how the validated SOI-R measures it, and what decades of research reveal about desire, attraction, jealousy, and commitment.

SOI-R vs. the Original SOI: Why the Revised Inventory Replaced It

How the Sociosexual Orientation Inventory–Revised (SOI-R) differs from Simpson & Gangestad's original 1991 SOI, and why researchers adopted the three-facet version.

June 16, 2026 · 3 min read

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