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Attachment types and the brain
Geraldine Dawson and her colleagues examined electroencephalograph (EEG) activity in the prefrontal cortex of 1-year- old infants during a series of episodes that were similar to a Strange Situation: Mother plays with infant, stranger enters, familiar experimenter plays with infant, mother leaves (Dawson et al., 2001). They found that infants whose behavior in this abbreviated Strange Situation indicated that they were insecurely attached to their mothers compared with infants who were securely attached showed relatively less activity on the left side of the prefrontal cortex and relatively more activity on the right side. Because other researchers have found that the left prefrontal cortex is specialized for the expression of positive approach emotions such as joy and interest, whereas the right prefrontal cortex is specialized for the expression of negative withdrawal emotions such as distress, disgust, and fear (Coanet al., 2006; Dawson, 1994), a clear and logical correspondence between attachment and brain activity was suggested. Securely attached infants, who are happy and interested in interacting with their mothers in the Strange Situation, show more brain activity on the positive (left) side of their prefrontal cortex during this kind of activity; insecurely attached infants, who withdraw from their mothers or express anger toward them in the Strange Situation. Need Assignment Help?