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 (10[1])in rhesus macaques (10[1])by constructing cloth-and-wire “surrogates,” (-5[1])which (10[1])inspired John Bowlby’s theory of this phenomenon. (10[1])In an experiment (-5[1])studying this phenomenon, (10[1])a stranger talked to a parent (-5[1])before the parent left the stranger with their child. (-5[1])Mary Ainsworth’s “strange situation” experiment studied this phenomenon, (10[1])whose three “styles” (10[1])are “secure,” “anxious-ambivalent,” (-5[1])and “anxious-avoidant.” For 10 points, name this feeling that an infant feels toward a caregiver. ■END■ (10[4])