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quartile

n. one of the three values in a series of values that divide it into equal-sized fourths. For example, the first (or lower) quartile of a distribution is the data value below which are the lowest 25% of scores, the second quartile is the data value below which are 50% of scores, and the third (or upper) quartile is the data value below which are 75% of scores (or, conversely, above which are 25% of scores). These values provide information to researchers about the relative spread of the distribution. See Q; quantile.

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Psychology term of the day

August 31st 2024

learning paradigm

learning paradigm

an experimental design used to research incidental learning. Groups of participants are shown the same stimuli (e.g., a list of 20 words) but asked to perform different tasks with them (e.g., picture associated words, determine the average number of letters in each word). Afterward, the participants unexpectedly are asked to recall as many of the presented items as possible.