In contrast to working memory, long-term memory is able to hold vast amounts of information and memories. Typically, small amounts of information are held for 20 to 30 seconds (McDevitt & Ormrod, 2004). Working memory is temporary in nature and limited in its capacity. The working memory is where people hold information while it is being used such as solving an arithmetic problem or try to figure out a solution to something. Working memory is as the name describes memory that is being used or working. Only by paying attention and thinking about these sensations can they be transferred into working memory. This memory serves the purpose of functioning but does not hold the many different sensations beyond the time they are needed to complete the walk. For instance, walking down the street would experience many different sensations of smell and sight. This memory is the sensory input that one would receive from any number of daily activities. This form of memory is extremely short ranging from fractions of seconds to two seconds (McDevitt & Ormrod, 2004). The sensory register is the first part of the information processing system. These components work together to form the information processing model. These components include sensory register, working memory, long-term memory, and central executive (McDevitt & Ormrod, 2004). While the specific mechanisms of the Information processing theory are debatable, the components of the theory are generally agreed upon. There are several components to information processing theory. Today, information processing theory presents differently than from the early computer conceptualizations, positing that the mind actively builds unique information and understanding using stored memories. This theory emerged during a time when computer technology became an emergent field and led to theories of the mind employing similar methods of information storage and retrieval. Information processing theory evolved in the 1950s and early 1960s from the belief that human thought occurs similar to computers (McDevitt & Ormrod, 2004).
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