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Spatial scaling is an integral aspect of many spatial tasks that involve symbol-to-referent correspondences (e.g., map reading, drawing). In this study, we asked 3-6-year-olds and adults to locate objects in a two-dimensional spatial layout using information from a second spatial representation (map). We examined how scaling factor and reference features, such as the shape of the layout or the presence of landmarks, affect performance. Results showed that spatial scaling on this simple task undergoes considerable development, especially between 3 and 5 years of age. Furthermore, the youngest children showed large individual variability and profited from landmark information. Accuracy differed between scaled and un-scaled items, but not between items using different scaling factors (1:2 vs. 1:4), suggesting that participants encoded relative rather than absolute distances. (Contains 3 tables and 3 figures.)

Reviews "Rethinking Innateness: A Connectionist Perspective on Development" by Elman and others (1996). Maintains that the authors argue forcefully that the nature-nurture conflict is a false dichotomy and that they present convincing existence on the possibility of qualitative change. Argues that the authors do not succeed in proposing a viable alternative theory of cognitive development. (Author)

- The commentaries on the target article () are correct in many ways. To clarify what neoconstructivism does and does not mean, this article discusses two different kinds of nonnativist theories of development, only one of which is neoconstructivist. [ABSTRACT FROM AUTHOR]

The present study investigated the role of spatial scaling and proportional-reasoning skills in children’s number-line estimations. Proportional strategies in number-line estimations might suggest that correlations between number-line knowledge and scaling are driven by proportional thinking. However, analyses of data on spatial scaling, proportional reasoning, counting skills, and number-line knowledge from 5- to 7-year-old children ( N  = 65) showed significant correlations between spatial-scaling performance and number-line knowledge, even after age, counting skills, common method variance, and proportional reasoning were accounted for. Thus, spatial scaling is related to variance in number-line estimations due to mechanisms beyond proportional reasoning. The ability to mentally transform magnitudes may be the additional common underlying process. [ABSTRACT FROM AUTHOR]

• Episodic memories often overlap with other memories and must be retained over time. • We asked how children's episodic memory is affected by overlap, 24hr delay, and age. • 6-year-olds outperformed 4-year-olds; both groups did worse on overlapping pairs. • At delay, nonoverlapping pairs had more cross-context errors in 4- than 6-year-olds. • The delay period affected relational memory differentially in the younger children. Episodic memories typically share overlapping elements in distinctive combinations, and to be valuable for future behavior they need to withstand delays. There is relatively little work on whether children have special difficulty with overlap or withstanding delay. However, Yim, Dennis, and Sloutsky (Psychological Science, 2013, Vol. 24, pp. 2163–2172) suggested that extensive overlap is more problematic for younger children, and Darby and Sloutsky (Psychological Science, 2015, Vol. 26, pp. 1937–1946) reported that a 48-h delay period actually improves children's memory for overlapping pairs of items. In the current study, we asked how children's episodic memory is affected by stimulus overlap, delay, and age using visual stimuli containing either overlapping or unique item pairs. Children aged 4 and 6 years were tested both immediately and after a 24-h delay. As expected, older children performed better than younger children, and both age groups performed worse on overlapping pairs. Surprisingly, the 24-h delay had only a marginal effect on overall accuracy. Although there were no interactions, when errors were examined, there was evidence that delay buffered memory for overlapping pairs against cross-contextual confusion for younger children. [ABSTRACT FROM AUTHOR]