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Free recall describes the process in which a person is given a list of items to remember and then is tested by being asked to recall them in any order. [6] Free recall often displays evidence of primacy and recency effects. Primacy effects are displayed when the person recalls items presented at the beginning of the list earlier and more often.
State-dependent memory is one example of encoding specificity. If an individual encodes information while intoxicated he or she, ideally, should match that state when attempting to recall the encoded information. This type of state-dependent effect is strongest with free recall rather than when strong retrieval cues are present. [16]
The standard test involves the recall period starting immediately after the final list item; this can be referred to as immediate free recall (IFR) to distinguish it from delayed free recall (DFR). In delayed free recall, there is a short distraction period between the final list item and the start of the recall period.
Free recall is one of the most commonly used recall tests. In free recall tests participants are asked to study a list of words and then are asked to recall the words in whatever order they choose to recall them in. The words the participants are to recall are typically presented one at a time and for a short duration.
In a classification task, the precision for a class is the number of true positives (i.e. the number of items correctly labelled as belonging to the positive class) divided by the total number of elements labelled as belonging to the positive class (i.e. the sum of true positives and false positives, which are items incorrectly labelled as belonging to the class).
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Then the answer is displayed too, for verification. The testing effect (also known as retrieval practice , active recall , practice testing , or test-enhanced learning ) [ 1 ] [ 2 ] [ 3 ] suggests long-term memory is increased when part of the learning period is devoted to retrieving information from memory . [ 4 ]
Indexing and classification methods to assist with information retrieval have a long history dating back to the earliest libraries and collections however systematic evaluation of their effectiveness began in earnest in the 1950s with the rapid expansion in research production across military, government and education and the introduction of computerised catalogues.