Segal, Nancy L.

An exploration of nature versus nurture follows the unique case of two sets of identical twins, who, born in Colombia, were separated at birth and improbably reunited as adults.

Explains how researchers are learning more about the genetic and environmental factors that affect human behavior by studying the personalities of identical and fraternal twins reared together and apart.

Explores the ways in which twins enhance our knowledge of human behavior and physical development, while shedding new light on the nature/nurture debate.

Examines the profound joys and real-life traumas of twelve sets of twins, triplets, and quadruplets, revealing the unique challenges that life as a twin, triplet, or quadruplet can pose to parents, friends, and spouses.