A strength of Ainsworth strange situation?

-Good predictive validity -Large body of reserach shown that babies and toddelers assesed as Type B (secure) tend to have better outcomes than others, both in childhood and adulthood. In childhood this included better achievement in school and less involvment in bullying (McCormick and Kokkinos) -Securely attached babies also tend to have better mental health in adulthood (Ward.). These babies are assesed as having insecure-resistant attachment and not falling into the types tend to have worse outcomes -Suggests that the strange situation measures something real and meaningful that is associated with baby's development