ceiling effect

a situation in which the majority of values obtained for a variable approach the upper limit of the scale used in its measurement. For example, a test whose items are too easy for those taking it would show a ceiling effect because most people would achieve or be close to the highest possible score. In other words, the test scores would exhibit skewness and have little variance, thus prohibiting meaningful analysis of the results. Compare floor effect.

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Psychology term of the day

May 10th 2024

interquartile range (IQR)

Sorry, "interquartile-range-iqr" is not in the Dictionary of Psychology. Please report to APA if you believe this is an error.