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eta squared

(symbol: η2) a measure of the amount of variance in a dependent variable that can be explained by one or more independent variables, as calculated in a variety of statistical procedures. In an analysis of variance, for example, eta squared is calculated as the sum of squares for the treatment (i.e., sum of squared differences between a group mean and the grand mean) divided by the total sum of squares. Eta squared is often used as an effect size measure.

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Psychology term of the day

February 26th 2024




1. an error in reasoning or argument that leads to a conclusion that may appear valid but is actually invalid. A fallacy may be formal or informal. A formal fallacy involves a violation of a principle of formal logic. An informal fallacy leads to an invalid conclusion because it is misleading in its language or appears to apply to a situation when it does not really apply. See also either–or fallacy; false analogy; false authority; false cause; historical fallacy.

2. more generally, any mistaken idea. —fallacious adj.