effect size

any of various measures of the magnitude or meaningfulness of a relationship between two variables. For example, Cohen’s d shows the number of standard deviation units between two means. Often, effect sizes are interpreted as indicating the practical significance of a research finding. Additionally, in meta-analyses, they allow for the computation of summary statistics that apply to all the studies considered as a whole. See also statistical significance.

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Psychology term of the day

July 27th 2024

trinucleotide repeat

a contiguous repetition of the same three nucleotides within a nucleic acid (DNA or RNA). The occurrence of extra trinucleotide repeats in certain genes causes dysfunction, inluding Huntington’s disease and fragile X syndrome.