This volume consists of a series of technical reports on each of the individual test measures administered in both Years 1 and 2 of the Longitudinal Study of Disadvantaged Children and Their First School Experiences. Each report includes: (1) relevant background information concerning the task's purpose and related research findings; (2) general task description and administration procedures, including training cautions where appropriate; (3) scoring and, where necessary, coding procedures; (4) score properties as revealed in various internal analyses; (5) sample performance, including descriptive information by three-month age groups and sex for the total sample tested in Year 1 and in Year 2, and comparative analyses for the longitudinal sample (those children tested in both years of the study); (6) information bearing on construct validity, i.e., the task's convergent and, where possible, discriminant validity, the extent to which the measure has the same meaning in Year 1 and Year 2, the similarity of meaning across groups (i.e., SES); and (7) discussion of methodological aspects affecting valid assessment (e.g., reliability, item characteristics, irrelevant measurement difficulties and appropriateness for field use). (For related documents, see TM 003 175-198.) (Author/DB)