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This question talked about how a "delayed match-to-sample task" can be used to measure an animal's working memory. What is a delayed match-to-sample task and how can it be used to measure working memory?

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Short term memory and working memory(remember triangle study). Also ruling mind matching the sample long term memory – Fatihcan ÖNCÜ Jan 25 at 14:45
up vote 6 down vote accepted

This kind of task is generally used when studying short-term memory. Typically, a subject is presented with some stimuli, followed by a probe item after a varying delay; subjects is then asked to recall (information retrieval) if the probe item was presented before (information encoding). A famous example is Sternberg experiment.

Such tasks can rely on non-verbal material, which makes them good candidates for behavioral studies with animals, but see

Paule MG, Bushnell PJ, Maurissen JP, Wenger GR, Buccafusco JJ, Chelonis JJ, Elliott R. Symposium overview: the use of delayed matching-to-sample procedures in studies of short-term memory in animals and humans. Neurotoxicol Teratol. 1998 Sep-Oct;20(5):493-502.

Some on-line demonstration can be found on the CANTAB testing battery: Delayed Matching to Sample (DMS).

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