[2] He then majored in psychology at Columbia College in New York City and graduated magna cum laude.

[2] His experiences working at camps and recreation centers in high school and college helped to shape his future academic interests in play and child development.

[citation needed] He received his PhD in biological sciences from Rockefeller University in 1972,[3] and, in that same year, joined the Psychology Department at Boston College.

The book broke new ground when the first edition was published (in 1991) as the first general introductory psychology textbook that brought a Darwinian perspective to the entire field.

[7] In 2017, Gray helped to found Let Grow, a non-profit organization which promotes childhood independence and pushes back against the model of helicopter parenting.