Book reviews

Early Behavior: Comparative and Developmental Approaches. Edited by H. W. Stevenson, E. H. Hess, and H. L. Rheingold. London and New York: Wiley. 1967. Pp. xii + 303 75s.

Current Research in Motivation. Edited by Ralph Norman Haber. London and New York: HOlt, Rinehart and Winston. Pp. xii + 800. £5

Language and Thought. Edited by Donald C. Hildum. London: Van Nostrand, Insight Book No. 37. 1967. Pp. vi + 2 00. $1.95. 16s.

Hormones and Behavior. Edited by Richard E. Whelan. London: Van Nostrand. Insight Book No. 39. I967. Pp. vi + 266. $2.95. 24s.