effects on adulthood

• Poor parenting Harlow's research with monkeys also demonstrated a link between poor attachment and later difficulties with parenting. On the previous spread we reported a study by Quinton et al. which showed that the same is true in humans. The lack of an internal working model means that individuals lack a reference point to subsequently form relationships with their own children.
• Romantic relationships The study by Hazan and Shaver demonstrated a link between early attachment type and later relationships. Individuals who were securely attached had longer-lasting romantic relationships.