Date created: | Last Updated:

Category: Project

Description: Longitudinal data from 97 preschool-age children, tested every 2 weeks for a total of up to 10 sessions, on two tasks per session. Many data are missing, reflecting the fact that the child was either not in school or didn’t want to play on the day of that session. In each session, the child completed two tasks: Give-N, where children construct a set of 1-8 items, and What’s-on-this-card (WOTC), where children say the number of items that are in a picture. The tasks were matched in that the pictures were actually photographs of the same small plastic counters used in the Give-N tasks, and the set sizes requested in the Give-N task were the same as those pictured on the cards in the WOTC task. The word “count” indicates that the child counted to produce the set (in Give-N) or counted the items in the picture (in WOTC). Data were collected by undergraduate research assistants in the Sarnecka Lab in Cognitive Sciences at UC-Irvine, under the direction of P.I. Barbara Sarnecka and Dr. James Negen, now at Durham University.