Scott Alexander examines recent studies on the Fraternal Birth Order Effect, finding evidence for a broader sibling birth order effect on homosexuality, though its exact nature and mechanism remain debated.

Scott Alexander explores new data on birth order effects among his blog readers, finding social factors likely explain firstborns' overrepresentation.

Scott Alexander analyzes a study on lactation fetishes and its critical window theory, using his own survey data to suggest an alternative explanation based on birth order effects.

Scott Alexander presents survey data showing a strong overrepresentation of oldest siblings among his blog readers, challenging the view that birth order effects are negligible.

Scott Alexander preregisters hypotheses for the 2018 SSC Survey, planning to explore relationships between perception, cognition, personality, and demographics.

A collection of interesting links covering various topics from scientific studies and economic policies to cultural oddities, with particular focus on deworming program controversies and workplace discrimination research.