David Lykken

David Lykken was a renowned psychologist known for his research on personality, genetics, and psychopathy. He studied how genetic factors influence behaviors such as criminality and personality traits, emphasizing that some aspects of human behavior have a biological basis. Lykken's work helped deepen understanding of the nature versus nurture debate and suggested that genetic predispositions can play a significant role in individual differences. His research has implications for psychology, criminal justice, and understanding human behavior more broadly.