In the chi square analysis of cross-tabulated variables, the problem of low cell counts is usually solved by combining categories, at the cost of a loss of information, or by using larger samples, at ...

The product moment correlation coefficient is often used even for ordinal data with only a few scale steps. This procedure may lead to biased results, where the bias depends on the number of scale ...

If you mastered even one of these games as a kid, chances are you were training intelligence in a way that didn’t look like ...

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As avid puzzlers know full well, the humble jigsaw puzzle is a thing of beauty in multiple ways. Not only are jigsaws an absorbing time sink, but multiple studies have demonstrated they are good for ...

Peptides derived from proteolytic processing of the β–amyloid precursor protein (APP), including the amyloid–β peptide, are important for the pathogenesis of Alzheimer's dementia. We found that ...