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entrainment

n. the process of activating or providing a timing cue for a biological rhythm. For example, the production of gonadal hormones in seasonally breeding animals can be a result of entrainment to increasing day length. The timing of circadian rhythms can be due to entrainment to either sunrise or sunset. See brainwave entrainment.

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Psychology term of the day

March 2nd 2024

ascertainment bias

ascertainment bias

error in selecting individuals or units for a sample, such that those units selected are not representative of the relevant population. For example, a medical researcher who studies a sample of patients that omits certain types of people who have the disorder of interest is likely to obtain results having an ascertainment bias. The term is often preferred over sampling bias in clinical contexts.