Journal of Experimental Child Psychology

The dataset includes 3 files: 1. with infants listening preferences for speech compared to non-speech sine wave analogues and later social and language outcomes 2. with infants listening preferences for speech compared to monkey calls and later social and language outcomes 3. a file with column names and descriptions.

The final samples of Study 1a&b and Study 2 of the related article

Data on children's friendship predictions based on similarity, propinquity, and loyalty.

Two separate research lines have shown first that infants expect agents to move efficiently toward goal-states and second that they navigate the social world selectively, preferring some individuals to others, and attributing social preferences to others’ agents. Here, we studied the relationship between infants’ expectations of efficient actions and their capacities to identify appropriate social partners. We presented 15-month-old infants with a set of videos containing three geometric figures depicting social agents. One of them (observer) watched how the other two agents acted to obtain a reward. Critically, the efficiency of their actions was manipulated. One agent reached the reward taking a direct efficient path (efficient agent), while the other took a curvilinear inefficient path (inefficient agent). At test, the observer approached each of them in two separate trials. Infants looked longer at the screen when the observer approached the inefficient rather than the efficient agent. In addition, they showed a bias to track the actions of the efficient agent when efficient and inefficient agents acted simultaneously. In a second experiment, we rejected the possibility that infants’ expectations in experiment 1 resulted from differences in the movement repertoire of the agents. The two studies suggest that infants use action efficiency as a cue to identify appropriate partners. They exploit this information to tune their attention and to predict others’ social interactions.

Data from Studies 1 and 2, as described in the paper "Experience regret about a choice helps children delay gratification" Two excel files, one for each study, with associated keys describing each variable.

Child and Ape data for paper "Human children, but not great apes become socially closer by sharing an experience in common ground"

Data to accompany manuscript entitled: Counterstereotyping Can Change Children’s Thinking About Boys’ and Girls’ Toy Preferences

Pretending vs Trying experiments

The dataset contains scaled scores of child receptive and expressive language abilities as measured by the Bayley Scales of Infant Development (BSID-III) (Bayley, 2006) at 2-years old and by the Wechsler Preschool and Primary Scale of Intelligence (WPPSI-IV) (Wechsler, 2012) at 4-years-old, and measures of child language quantity (word tokens), quality (TTR/VOCD) and complexity (MLU) in interaction computed through the KIDEVAL command of CLAN. Also included are proportions of fathers’ and mothers’ repetition (overlap) in interaction with their children as computed through the CHIP command of CLAN.

Raw data for Why do children punish? Fair outcomes matter more than intent in children's second- and third-party punishment