In a study of attachment patterns in over two thousand infants in “normal” middle-class environments, 62 percent were found to be secure, 15 percent avoidant, 9 percent anxious (also known as ambivalent), and 15 percent disorganized.21 Interestingly, this large study showed that the child’s gender and basic temperament have little effect on attachment style; for example, children with “difficult” temperaments are not more likely to develop a disorganized style. Kids from lower socioeconomic groups are more likely to be disorganized,22 with parents often severely stressed by economic and family
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