标题：Morphometric (‘log sem’) analysis of anatomical measurements of Galápagos finches (Geospiza), chimpanzees (Pan) and Plio-Pleistocene hominins (Paranthropus, Australopithecus and early Homo)
摘要：A morphometric method has been used in analyses of linear measurements obtained from crania of modern hominoids1-3 as well as Plio-Pleistocene hominins,1,4,5 based on pairwise comparisons associated with least squares linear regression to quantify the degree of scatter around a regression line of the form y= mx+c, where m is the slope and c is the intercept. The log-transformed standard error of the m-coefficient, known as ‘log sem’, serves to quantify the degree of scatter around the regression line, associated with the degree of variability in shape. The effect of size is associated with the m-coefficient.
