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experiment-wise alpha level

the significance level (i.e., the acceptable risk of making a Type I error) that is established by a researcher for a set of multiple comparisons and statistical tests. It is often set at the conventional level of .05; by setting the alpha for individual tests (the testwise alpha level) at a lower rate (e.g., .01), it can be ensured that the whole set of tests does not produce error greater than the desired experiment-wise level.

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Psychology term of the day

February 24th 2024

preconscious thinking

preconscious thinking

1. the pictorial, magical, fantasy thinking of children that precedes the development of logical thinking. [introduced in 1938 by Austrian psychoanalyst Otto Fenichel (1897–1946)]

2. in psychoanalytic theory, thinking that takes place at the level of the preconscious. Preconscious thinking has sometimes been cited to explain apparently unconscious, intuitive thought processes, as well as certain kinds of creative leaps and insights.