Within each store, the three component processes may operate: “availability” refers to the persistence of information over time, “access” refers to the ability to retrieve previously acquired information, and “efficiency” refers to the ability to use accurate or relevant information while ignoring or disregarding inaccurate or irrelevant information. According to the component-process model, the nature of the deficit differs for each of these three processes. Availability deficits are characterized by impairments in accuracy as measured by increased errors. Access impairments are characterized by a slowing of behavior that can be measured by increases in a person’s response time. And efficiency deficits are characterized by a person’s inability to ignore irrelevant or inaccurate information.
