This handbook makes available in one source (two volumes) nearly 900 unpublished tests and measures of child development--measures of intellectual functioning, personality, self-concept, motor skills, physical attributes, and many other characteristics. The measures are appropriate for the years from birth through age 18. The measures are classified into eleven basic categories. Each description includes the author of the variable measured, the age range for which the instrument is appropriate, the type of measure, and source from which the measure can be obtained. A narrative description follows, including, when available, information on norms, item type, development of the measure, theoretical basis, scoring and administration specifics, and reliability and validity factors. In many cases, portions of the measures and bibliographies are also presented. (RC)