Sum/mean/composite scores

The purpose of this study was to explore the paths by which word-problem intervention, with versus without embedded pre-algebraic reasoning instruction, improved word-problem performance. Students with mathematics difficulty (MD;n304) were randomly assigned to a business-as-usual condition or 1 of 2 variants of word-problem intervention. The pre-algebraic reasoning component targeted relational understanding of the equal sign as well as standard and nonstandard equation solving. Intervention occurred for 16 weeks, 3 times per week, 30 min per session.

This dataset incudes data from 248 second graders (7- to 8-year-olds) with typical development from three states. One hundred sixty-seven were monolingual English-speaking and 81 were dual Spanish- and English-speaking. Participants completed a comprehensive battery of working memory assessments and six word learning tasks that assessed the creation, storage, retrieval, and production of phonological and semantic representations of novel nouns and verbs and the ability to link those representations.

These data provide pre and posttest results from the SMSC study.

These data include information on family demographics, home environment, health information, child diet and nutrition, BRIEF, SWAN, all at the item level. This is cross-sectional data. Data can be linked to other Project KIDS data through the PK_ID variable.

This dataset contains results from the initial survey assessment completed by parents and twins (who were 9 years or older) regarding the twin pair's environments and behaviors (2010). T

This dataset contains measures from the third wave of data collection of the twins' achievement (collected in 2016). Data was collected via parent assessment using instructions sent in the mail.

This dataset contains measures from the second wave of data collection of the twins' achievement (collected in 2014). Data was collected via parent assessment using instructions sent in the mail.

This dataset contains measures from the first wave of data collection of the twins' achievement (collected in 2012). Data was collected via parent assessment using instructions sent in the mail.

This dataset contains results from the wave 3 survey completed by the twins who were 9 and older about themselves, administered in 2016. This contains measures related to the child's home and school environment, attitudes regarding books, home, school, and friends, and several behavioral surveys (PANAS, CADS, etc.).

This dataset contains results from the wave 2 survey completed by the twins who were 9 and older about themselves, administered in 2014. This contains measures related to the child's home and school environment, attitudes regarding books, home, school, and friends, and several behavioral surveys (PANAS, CADS, etc.).