Cognitive Assessment, Research Link

Working memory capacity for body movements?

This article is serious. But I think it is fun fun fun!

A test of working memory capacity was developed such that people had to imitate sequences of body movements such as the ones below:

Sample 1
Sample 2
Sample 3

So, participants would be shown such clips in quick succession and then asked to imitate the movements in the same order.

Interestingly, the test is not just a novel way of measuring something we can already measure. It has differential validity. That is, it did not correlate with more traditional measures of visual and verbal working memory but it did correlate with a test measuring understanding of gestures.

I imagine that dancers would do well on such a test for two reasons. First, people who are good at imitating body movements (a la Gardner’s Bodily-Kinesthetic Intelligence) have a natural advantage in learning to dance. Second, dancing gives extensive training in imitating other people’s body movements. Expertise and training matter! Anyway, giving such a test to dancers and non-dancers would be a fun little study to do.

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CHC Theory, Cognitive Assessment, Research Link

The Correlation between Simple and Complex Memory Span Tests Increases with Age in Children and Adolescents

This meta-analysis found that simple memory span measures (e.g., Digits Forward) and complex span measures correlate more strongly in adolescents than in children. Eyeballing Figure 1 in the paper, it appears that the correlation increases from about 0.35 at age 5 to about 0.45 at age 20. It does not appear that the finding is an artifact of reliability. The interpretation of the finding is that both types of tests require storage ability and executive ability but in differing proportions. The author of the paper proposes that the executive control of attention in children develops considerably throughout childhood and adolescence whereas the storage capacity of primary memory stays comparatively more stable over time. Thus, performance on simple memory span increases over time mostly as a function of the maturation of executive ability. Thus, simple span measures correlate more strongly with complex span measures (which measure executive control of attention more directly) in older samples than in younger samples.

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