deuteranopia

n. red–green color blindness in which the deficiency is due to absence of the cone photopigment sensitive to green light, resulting in loss of green sensitivity and confusion between red and green (see dichromatism). The condition may be unilateral (i.e., color vision may be normal in one eye). See also protanopia.

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Psychology term of the day

December 18th 2024

sampling

n. the process of selecting for study a limited number of units from a larger set. The term most often refers to the selection of respondents, observations, or cases for inclusion in experiments, surveys, interviews, or other research. However, sampling can also involve selecting theoretical constructs to study, selecting measurement instruments from a broad set of potential options, or selecting time points at which to observe individuals or cases. There are various different selection methods, including simple random sampling, stratified sampling, convenience sampling, and quota sampling. Each approach has a different potential of obtaining a sample appropriately representative of the population under study.