This assessment was not administered after 1988. Parts of the Body - ten items, developed by Kagan, that measure the ability of children aged one or two to identify various parts of their bodies.Behavior Problems Index (BPI) - items from Zill and Peterson's adaptation of the Child Behavior Checklist, developed by Achenbach and Edelbrock, which elicit mother ratings of children four years of age or older in such areas of problem behavior as hyperactivity, anxiety, dependency, aggressiveness, and peer conflict.Motor and Social Development (MSD) - items drawn from Poe, Bayley, Gesell, and the Denver Developmental Screening Test, which measure motor-social-cognitive development for children under age four.How My Child Usually Acts/Temperament - items from Rothbart's Infant Behavior Questionnaire, Kagan's Compliance Scale and other items from Campos, which combine to form a set of maternal-report scales measuring temperament or behavioral style over the past two-week period for each child under age seven.The HOME- Short Form - items from the HOME (Home Observation for Measurement of the Environment) Inventory, developed by Bradley and Caldwell, designed to measure the nature and quality of the child's home environment from birth to adolescence.The following assessments, listed here and then discussed in detail (in separate sections), have been used in the Child surveys: Issues essential to using the assessment data are highlighted. In the following section, information is presented on the nature of each assessment and how each one is administered and scored. The selection was designed to accommodate a range of child ages and a broad spectrum of dimensions in the child's development. The assessments used in the Child surveys were selected on the basis of their validity, reliability, and suitability for use in a large-scale household survey. The 12 and 13 year olds, however, answer a more limited number of questions which include several items from the Child Self-Administered Supplement as well as the Self-Perception Profile for Children (SPPC) from the Child Supplement. Young Adults aged 14 complete the same set of items as 15 and 16 year olds. Note that beginning with the 2016 survey round, the children ages 12 to 14 have also been included in the Young Adult fielding. See Table 2 in the Retention section for the distribution of the number of child interviews for the NLSY79 Young Adults. Most young adults have at least one survey round in which they were assessed as a child. Data obtained in the surveys during the time the young adult children were under age 15 are included as part of the child files and documented in such areas of interest as CHILD BACKGROUND and ASSESSMENT for each survey year. Users are reminded that, while young adults are no longer administered the child instruments, they possess a child history represented in the child data file.

Starting with the 1994 survey, children ages 15 and older were no longer assessed, but instead complete an interview modeled on the NLSY79 main Youth questionnaire administered to their mothers. Each of the child assessment measures is discussed in detail in this and the following sections. Mother-based child assessments, collected through the Mother Supplement, were completed from 1986 to 2016. Direct assessment of the children through the Child Supplement was done from 1986 to 2014. These reports include child demographic and family background characteristics, health history (both pre- and postnatal), and information on the child's home environment, including maternal emotional and verbal responsiveness and involvement with her child. Many of the assessments, and much of the supplemental information about each child, have been based on reports from the child's mother. Beginning in 1986, a battery of child cognitive, socio-emotional, and physiological assessments has been administered biennially for age-appropriate children. The NLSY79 Child surveys contain a wide range of detailed assessment information about the children of female respondents.

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