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population research

the study of the numbers, and changes in the numbers, of people and other organisms, focusing on the reasons for growth and decline, the migration patterns and spatial distribution of the organisms, and related issues. Also called demographic research. See also demography.

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Psychology term of the day

September 8th 2024

drift

drift

n.

1. a reduction in variation in genetic traits that can occur when sampling from continually smaller groups, such that some traits ultimately become excluded from possibility.

2. a reduction in the reliability of technical instruments orin the accuracy of observers over time. See instrument drift; observer drift.