“…A search ofthe literature turned up 31 published reports of studies in which home reared infants were approached by or placed close to a stranger and an aspect of wariness was assessed (Ainsworth and Bell, 1970;Ainsworth and Wittig, 1969;Bretherton and Ainsworth, 1974;Brody and Axelrad, 1971;Bronson, 1972;Brookhart and Hock, 1976;Brooks and Lewis, 1976;Brossard, 1974;Campos, Emde, Gaensbauer and Henderson, 1975;Collard, 1968;Corter, 1973;Eckerman and Whatley, 1975;Emde, Gaensbauer and Harmon, 1976;Goulet, 1974;Greenberg, Hillman and Grice, 1973;Harmon, Morgan and Klein, 1977;Lewis and Brooks, 1974;Morgan and Ricciuti, 1969;Moss, Robson and Pedersen, 1969;Paradise and Curcio, 1974;Rafman, 1974;Rheingold and Eckerman, 1973;Ricciuti, 1974;Robson, Pedersen and Moss, 1969;Scarr and Salapatek, 1970;Schaffer, 1966;Schaffer and Emerson, 1964;Skarin, 1977;Sroufe, Waters and Matas, 1974;Tennes and Lampl, 1964;Waters, Matas and Sroufe, 1975). Several pairs of these reports utilized common data- Brossard (1974) and Goulet (1974), Moss et al (1969) and Robson et al (1969), andSchaffer (1966) and Schaffer and Emerson (1964).…”