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Lester, Barry M. – 1973
Two experiments are reported in which cardiac habituation and dishabituation to pure tone stimuli were studied in well and malnourished Guatemalan infants. In both studies the magnitude of the orienting response was found to be attenuated or completely absent in infants suffering from nutritional insult. The findings were taken as evidence of a…
Descriptors: Attention, Auditory Perception, Environmental Influences, Infant Behavior
Peer reviewed Peer reviewed
Lasky, Robert E.; And Others – Child Development, 1981
Investigated the relationship between anthropometric indices and behavioral development during the first two years of life in rural Guatemala. Body length and weight most strongly correlated with behavioral development. When length and weight were controlled statistically, variance in behavioral development was accounted for. (Author/DB)
Descriptors: Body Height, Body Weight, Foreign Countries, Infant Behavior
Peer reviewed Peer reviewed
Lasky, Robert E.; Klein, Robert E. – Merrill-Palmer Quarterly, 1979
Demonstrates that eye contact per se, and not solely the inherent attractiveness of the eyes and face, is salient to five-month-old infants. Five-month-old infants can distinguish when another person is looking at them, rather than at a nearby location. (Author/MP)
Descriptors: Eye Fixations, Foreign Countries, Infant Behavior, Infants
Peer reviewed Peer reviewed
Lasky, Robert E.; And Others – Child Development, 1981
The behavioral development of rural Guatemalan infants was assessed shortly after birth on a Neonatal Assessment Scale (NAS) and at 6-, 15-, and 24-months-of-age on a Composite Infant Scale (CIS). Summary variables based on NAS performance poorly predicted later assessed performance even as recently as six months after birth. The CIS modestly…
Descriptors: Child Development, Cognitive Development, Foreign Countries, Infant Behavior
Kagan, Jerome – 1972
The popular view among American psychologists has been that there is a continuity of psychological structure that is shaped by early experience. Data gathered in studies of Guatemalan villages imply serious discontinuities in the development of particular cognitive competencies and capacities for affect through preadolescence. The first two years…
Descriptors: Adjustment (to Environment), Child Development, Cognitive Development, Cognitive Tests