![]() The phonological loop comprises a verbal storage system and a rehearsal system. According to one influential cognitive theory, this system has specialised components, one of which, the "phonological loop," underlies verbal working memory abilities (Baddeley & Hitch, 1974). Scientists refer to short-term memory, or working memory, as the cognitive system that allows the temporary storage and manipulation of information. The science behind digit span reveals why it's associated more with verbal ability than short-term memory alone. The exact contribution of each test to each performance category may change as more data is collected. The results were published in Neuron in 2012 (Hampshire, Highfield, Parkin, & Owen, 2012). The contribution of each test to each performance category is based on a "factor analysis" that looked at how tests tend to clump together when measuring a massive set of data. That's right, perhaps surprisingly, it's more closely related to verbal ability than to memory. It's not easy, and requires a lot of practice to master. Experiment with your mental approach to the test to find strategies that work for you.įor most people, "chunking" is an effective strategy-instead of thinking about each digit separately, think of groups of digits that form a smaller number of meaningful units (chunks).įor example, instead of thinking about 1 4 2 8 5 7 as six digits, thinking of it as three numbers-14, 28, and 57-could make it easier to recall. Your digit span can be increased with the right strategies. ![]()
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