The Skeptics Society & Skeptic magazine

Shermer and Schulz discuss: an operational definition of the “good life” or “happiness” or “well being” • the reliability (or unreliability) of self-report data in social science • relative roles of genes, environment, hard work, and luck in how lives turn out • personality and to what extent it can be scientifically measured and studied • factors in early childhood that shape mental health in mid and late life • generational differences: • the impact of loneliness • misconceptions about happiness • what social fitness is and how to exercise it • what most people get wrong about achievement, and more…

In this conversation, Nancy Segal reveals the inside stories of the agency that separated the twins, and the collaborating psychiatrists who, along with their cadre of colleagues, observed the twins until they turned twelve. This study, far outside the mainstream of scientific twin research, was not widely known to scholars or the general public.

In episode 225, Michael Shermer speaks with Nancy Segal about deliberately divided twins and what they tell us about human nature, based on her book Deliberately Divided: Inside the Controversial Study of Twins and Triplets Adopted Apart.