• Entry
  • Reader's guide
  • Entries A-Z
  • Subject index

Cognitive Decline/Impairment

Cognitive decline is defined as a negative change in cognitive status over time that can be a function of normal ageing, brain injury, dementing brain pathology (e.g. Alzheimer's disease), or other mechanisms. There are two major areas in which assessment of cognitive decline is important: (1) research on the nature of ageing and how it affects cognitive processes and mechanisms, and (2) individual assessment, in which cognitive testing is used to determine whether a specific individual has undergone cognitive decline, possibly due to age-related disease processes, such as Alzheimer's disease or stroke. Assessment of normative age-related change often involves use of panel designs, in which a large sample of individuals are given a set of cognitive tests and tasks. Prototypic examples of this kind of ...

  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles