Recognition test

Recognition tests are unique in that participants are not required to produce a word from memory as a part of the test. Instead, participants are literally shown a word, and are asked to report whether it was a word they studied or not. In addition to showing all of the studied words, recognition tests typically show a large number of non-studied words. Consequently, not only is it typical to measure how often participants correctly recognize studied items (called hits), but also how often they incorrectly recognize non-studied items (called false alarms).

Comparing the difference between these two proportions is called d', a statistic measuring the ability to discriminate between studied and non-studied items, and has been used to represent retrieval-induced forgetting. Reaction time is also used to represent RIF, where slower reaction times are thought to represent more difficulty in recognizing the studied item.

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