A team led by Michael Rutter found that disorders of this phenomenon were rare in Romanian-English orphans born during the Ceauşescu (“cho-SHESS-koo”) regime. Harry Harlow studied this phenomenon in rhesus (10[1])macaques by constructing cloth-and-wire “surrogates,” which (10[1])inspired John Bowlby’s theory of this phenomenon. (10[1])In an experiment studying this phenomenon, a stranger talked to a parent before the parent left the (10[1])stranger with (10[1])their child. (10[1])Mary Ainsworth’s “strange situation” (10[1])experiment (10[1])studied this phenomenon, (10[1]-5[1])whose three “styles” are “secure,” “anxious-ambivalent,” (10[1])and “anxious-avoidant.” (10[1])For 10 points, (10[1])name this feeling that an infant feels toward a caregiver. ■END■