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According to Vygotsky's cultural-historical activity theory, pretend play can be an important context for the development of children's social competence. The aim of this meta-analysis was to synthesize the current evidence about the relation between pretend play and social competence in early childhood (age 3-8 years). A systematic literature search of PsycINFO, ERIC, and Web of Science identified a total of 34 relevant empirical studies. The included studies were systematically coded and categorized for pretend play and social competence. Overall, the findings of this meta-analysis reveal a positive relation between pretend play and social competence, irrespective of how the latter was measured. The relation between pretend play and social competence was slightly negatively impacted by children's age, suggesting that the relation weakens as children get older. Studies measuring the amount of pretend play found lower correlations between pretend play and social competence than studies measuring the quality of pretend play. Most included studies adopted a cross-sectional design, so claims about causal effects could not be supported. Future research is required to determine the direction of causality and potential mechanisms that may explain the relation between pretend play and social competence.

The current multilevel meta-analyses and systematic review encompass 47 longitudinal studies of motivation and academic achievement in primary and secondary education. Our inclusion criteria extended beyond studies centred on self-belief type of motivation constructs, as we also selected studies using other motivation constructs (e.g. achievement goals). The findings offered mixed support for the reciprocity. The pooled effect of achievement on motivation was nearly twice as strong ([beta] = 0.176) as that of motivation on achievement ([beta] = 0.096). The effect of achievement on motivation held across different motivation constructs, albeit exhibiting more robust reciprocity for self-belief constructs ([beta] = 0.227) than for other constructs ([beta] = 0.091). The effect of motivation on achievement was exclusively found for self-belief ([beta] = 0.157) and not for non-self-belief motivation. Overall, the medium-to-high heterogeneity between studies and within studies suggests that pivotal factors in the motivation-achievement dynamics may not have been captured yet.

Well-structured knowledge allows us to quickly understand the world around us and make informed decisions to adequately control behavior. Knowledge structures, or schemas, are presumed to aid memory encoding and consolidation of new experiences so we cannot only remember the past, but also guide behavior in the present and predict the future. However, very strong schemas can also lead to unwanted side effects such as false memories and misconceptions. To overcome this overreliance on a schema, we should aim to create robust schemas that are on the one hand strong enough to help to remember and predict, but also malleable enough to avoid such undesirable side effects. This raises the question as to whether there are ways to deliberately influence knowledge construction processes, with the goal to reach such optimally balanced schemas. Here, we will discuss how the mnemonic processes in our brains build long-term knowledge and, more specifically, how different phases of memory formation (encoding, consolidation, retrieval, and reconsolidation) contribute to this schema build-up. We finally provide ways how to best keep a balance between generalized semantic and detailed episodic memories, which can prove very useful in, e.g., educational settings.

In everyday life and in education, we continuously build and structure our knowledge. Successful knowledge construction is suggested to happen through reactivation of previously learned information during new learning. This reactivation is presumed to lead to integration of old and new memories and strengthen long-term retention. Additionally, congruency with prior knowledge is shown to enhance subsequent memory. However, it is unknown how subjective reactivation and congruency jointly influence learning in an educational context. In two experiments, we investigated this question using an AB-AC inference paradigm where students were asked to first study an AB (word-picture) and then an AC-association (word-description). BC-associations were either congruent or incongruent and were linked by a common, unknown word (A). During AC-learning, participants were instructed to actively reactivate B (the picture) and report their subjective reactivation strength. Participants were first-year university students studying either psychology or family studies and the stimuli consisted of new information from their curricula. We expected that both reactivation and congruency would enhance subsequent associative memory for the inferred BC-association. This was assessed by cueing participants with C (the description) and asking to freely describe the associated picture. Results show a significant enhancement of both B-reactivation and congruency on associative memory scores in both experiments. Additionally, subjective meta-memory measures exhibited the same effect. These outcomes, showing beneficial effects of both reactivation and congruency on memory formation, can be of interest to educational practice, where effectively building knowledge through reactivation is imperative for success.