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Attachment in Monkey Infants Raised in Variable‐ and Low‐Demand Environments
Author(s) -
Andrews Michael W.,
Rosenblum Leonard A.
Publication year - 1991
Publication title -
child development
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.103
H-Index - 257
eISSN - 1467-8624
pISSN - 0009-3920
DOI - 10.1111/j.1467-8624.1991.tb01562.x
Subject(s) - psychology , foraging , developmental psychology , ecology , biology
12 bonnet macaque ( Macaca radiata ) mother‐infant dyads were studied. For 14 weeks, beginning when the infants were a mean age of 11.2 weeks, the dyads were housed and observed under different foraging‐demand conditions for the mothers: 6 dyads in a low‐foraging‐demand (LFD) condition and 6 dyads in a variable‐foraging‐demand (VFD) condition. For VFD mothers, demand varied between low and high in 2‐week blocks. Differences between the LFD and VFD groups were minimal during this period; there was, however, more maternal grooming and shorter separation bouts in the VFD group than in the LFD group. The dyads were then challenged by brief introductions to a novel environment. The challenge revealed that frequency of breaking dyadic contact and levels of play were significantly lower for the VFD infants than for the LFD infants, perhaps as a consequence of less secure attachment.