interrupted time-series design

a quasi-experimental design in which the effects of an intervention are evaluated by comparing outcome measures obtained at several time intervals before and several time intervals after the intervention was introduced. Unlike traditional time-series designs, which make use of a continuous predictor variable, an interrupted time-series design uses a categorical predictor—the absence or presence of an intervention.

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Psychology term of the day

February 28th 2025

common metric

a unit or scale of measurement that is applied to data from different sources. In a meta-analysis, for instance, the results from multiple studies may need to be placed on a common metric so that they may be meaningfully compared.