Predictions for an individual-level general crime factor study using Swedish register data

There is a lot of research on the link between crime and cognitive ability. (For criminal outcomes, see the problems in my previous post.) E.g. Is the Association between General Cognitive Ability and Violent Crime Caused by Family-Level Confounders? We linked longitudinal Swedish total population registers to study the association of general cognitive ability (intelligence)…

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Interesting non-linear relationship between TV watching, age and reading comprehension

Some time ago, I stumbled upon this paper: Searls, D. T., Mead, N. A., & Ward, B. (1985). The relationship of students’ reading skills to TV watching, leisure time reading, and homework. Journal of Reading, 158-162. Sample is very large: To enlarge on such information, the National Assessment of Educational Progress (NAEP) gathered data on…

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Age differences in the WISC-IV has a positive Jensen coefficient, maybe

Group differences in cognitive scores have generally been found to be g-loaded, i.e. the differences are larger on the items/subtests that load more strongly on the general factor. This is generally called a Jensen effect, and its opposite an anti-Jensen effect. However this can cause linguistic trouble when dealing with (near)-zero correlations or when dealing…

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