1. John Bowlby developed an evolutionary theory of attachment suggesting that children are biologically programmed to form attachments to help them survive.
2. Bowlby believed that attachment behaviors are activated by threats like separation or fear and help infants stay close to their mothers, with whom they form an innate primary bond.
3. Disrupting this primary attachment can have long-term cognitive, social, and emotional consequences for children, including increased aggression, depression, and affectionless psychopathy.