This handbook is a detailed guide to more than 300 measures of child behavior and development not available from test publishers. The authors surveyed the literature over a ten-year period to find more than a thousand measures; those included here are not described in other sourcebooks and guides. Thus this book is the only guide to many of the most useful measures available to researchers, child psychologists, counselors, testing specialists, and professionals in related fields. All of the measures described meet six criteria: (1) they are suitable for use with children between birth and age twelve; (2) they are available to other professionals; (3) they are unpublished, not commercially available; (4) they include enough information to enable others to use them effectively; (5) they are long enough to permit development of norms and reliability and validity data; (6) they are all technically usable, not requiring heavy laboratory equipment. The measures are classified according to the users' needs for information, in ten categories: (1) cognition, (2) personality and emotional characteristics; (3) children's perceptions of the environment; (4) self-concept; (5) characteristics of the environment; (6) motor skills, brain injury, sensory perception; (7) physical attributes; (8) attitudes and interests not otherwise classified; (9) social behavior; and (10) measures that do not fit any of the other categories. Each description of these measures contains information geared toward helping the professional relate specific measures to specific needs and problems. (RC)