Scott examines a new genetic study on missing heritability that both hereditarians and nurturists claim vindicates their position, concluding that despite the study's advances, the fundamental debate over how heritable traits like IQ actually are remains unresolved.

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

Scott Alexander examines why certain families produce multiple generations of high achievers, exploring genetic, environmental, and psychological factors.

Scott Alexander describes 'fallacies of reversed moderation,' where moderate positions are misinterpreted as extreme opposites of the consensus view.

The post argues that 'non-shared environment' in twin studies is often misunderstood, encompassing more than just different experiences and potentially overestimating the impact of nurture on personality and life outcomes.

The author revisits their belief in genetic determinism, presenting evidence that environmental factors, especially in divorce, have significant non-genetic effects on children's outcomes.

Scott Alexander argues that biological solutions to societal problems may be more effective and easier to implement than social interventions, challenging common perceptions about mutability of human characteristics.

Scott Alexander defends social psychology against conservative criticism, arguing that it correctly balances situational and personality factors in human behavior, and proposes a progressive approach that leverages human nature for positive outcomes.