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ecology

n. the study of relationships between organisms and their physical and social environments. Behavioral ecology is a subfield that examines how the behavior of nonhuman animals is affected by physical and social factors. —ecological adj. —ecologist n.

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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.