Bayley's major contributions to developmental psychology are reviewed. These include her concern with measurement and methodology and her early anticipation of such topics as behavior genetics. Her work in such areas as androgyny and body build, motor and mental development, and maternal and child behaviors is summarized. (LB)

Qualitative assessment methods typically are holistic and integrated. Compared with standardized tests, they offer a more active role for clients, a more intimate connection between assessment and the counseling process, and greater adaptability to ethnic, cultural, age, gender, and other individual differences. (Author/TE)