“…Existing research describes how various populations have responded to varying degrees of environmental deprivation (Dreizen et al, 1967;Satyanarayana et al, 1981Satyanarayana et al, , 1989Billewicz and McGregor, 1982;Bogin et al, 1990Bogin et al, , 1992 or environmental enhancement, as through migration (Schumacher et al, 1987;Yip et al, 1992;Bogin, 1995), or adoption (Lien et al, 1977;Adolfsson and Westphal, 1981;Proos, 1993;Proos et al, 1993), but much remains to be learned about the plasticity of growth under changing environmental circumstances. While means of biological parameters have been used to assess differences in central growth tendencies among population samples, analysis of correlations of biological parameters helps clarify the growth patterns of individuals within a group and, by extension, differences among groups of individuals.…”