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To be efficient, problem solvers need to be adaptive, tailoring their information search to the specific problem at hand. Across two studies, we investigated the emergence and early development of children's ability to adapt their information search to a given goal (Studies 1 and 2) and to the statistical structure of the problem space (Study 2) to maximize effectiveness. In Study 1, 3-6-year-olds (n = 105) decided which of two cues to look up, the arms or the legs of two monsters, to predict the winner of a throwing or jumping challenge, knowing that monsters with long arms were good throwers and those with long legs were good jumpers. Children's ability to adaptively select relevant information and tailor their search to the goal increased with age, surpassing chance level between the ages of 4 and 5. Study 2 (7-14-year-olds and adults, n = 175) demonstrated this competence in a more complex task, additionally investigating whether children tailor their search to the statistical structure, that is, the distribution of cue values, in their search environment (e.g., how common long legs are). The results suggest high reliability in ignoring irrelevant cues (confirming the results from Study 1) and developmental patterns in children's preferential treatment of cues of differing statistical frequency. Together, these studies contribute to the literature on information search adaptiveness by tracing for the first time the emergence and developmental trajectory of children's ability to tailor predecisional search to the changing goals and environmental resources of the problem at hand. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

RESUMEN

A key skill in collaborative problem-solving is to communicate and evaluate reasons for proposals to arrive at the decision benefiting all group members. Although it is well-documented that collaborative contexts facilitate young children's reasoning, less is known about whether competition with other groups contributes to children's collaborative reasoning. We investigated whether between-group competition facilitates children's within-group collaborative reasoning, regarding their production of reasons and their use of transacts, communicative acts that operate on one another's proposals and reasoning. We presented 5- and 7-year-old peer dyads with two collaborative problem-solving tasks (decorating a zoo and a dollhouse). In one task, children competed against another group (the competitive condition); whereas in the other task, they did not (non-competitive condition). Our results suggest that children's sensitivity to group competition as reflected in their reasoning changed depending on the task. When they decorated a house, they produced more transacts in the competitive condition than in the non-competitive condition; whereas when they decorated a zoo, this pattern was reversed. Thus, our results highlight that group competition did not influence children's collaborative reasoning consistently across different contexts.

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RESUMEN

In collaborative problem solving, children produce and evaluate arguments for proposals. We investigated whether 3- and 5-year-olds (N = 192) can produce and evaluate arguments against those arguments (i.e., counter-arguments). In Study 1, each child within a peer dyad was privately given a reason to prefer one over another solution to a task. One child, however, was given further information that would refute the reasoning of their partner. Five-year-olds, but not 3-year-olds, identified and produced valid and relevant counter-arguments. In Study 2, 3-year-olds were given discourse training (discourse that contrasted valid and invalid counter-arguments) and then given the same problem-solving tasks. After training, 3-year-olds could also identify and produce valid and relevant counter-arguments. Thus, participating in discourse about reasons facilitates children's counter-argumentation.

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RESUMEN

We report two studies that demonstrate how five- and seven-year-olds adapt their production of arguments to either a cooperative or a competitive context. Two games elicited agreements from peer dyads about placing animals on either of two halves of a playing field owned by either child. Children had to produce arguments to justify these decisions. Played in a competitive context that encouraged placing animals on one's own half, children's arguments showed a bias that was the result of withholding known arguments. In a cooperative context, children produced not only more arguments, but also more 'two-sided' arguments. Also, seven-year-olds demonstrated a more frequent and strategic use of arguments that specifically refuted decisions that would favour their peers. The results suggest that cooperative contexts provide a more motivating context for children to produce arguments. Statement of contribution What is already known on this subject? Reasoning is a social skill that allows people to reach joint decisions. Preschoolers give reasons for their proposals in their peer conversations. By adolescence, children use sophisticated arguments (e.g., refutations and rebuttals). What the present study adds? Cooperation offers a more motivating context for children's argument production. Seven-year-olds are more strategic than five-year-olds in their reasoning with peers. Children's reasoning with others becomes more sophisticated after preschool years.

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