Saturday, October 15, 2011

Research byte: Temporal stability of general intelligence (g)

The following article is an excellent synthesis of research on the stability of general intelligence over time as well as the consistency (vs. temporal degradation) of g's prediction of academic and occupational outcomes over time.

The general findings are that general intelligence is remarkably stable over long periods of time. However, and this is important in n=1 individual cases, strong group stability statistics do not necessarily translate to IQ scores being near identical across time for individuals. The authors conclusion about decision validity is particularly important when evaluating Dx decisions for individuals across time (across IQ scores from different times in a person's life).

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