Dementia in its many forms is a leading cause of functional limitation among older adults worldwide and will continue to ascend in global health importance as populations continue to age and effective cures remain elusive. The following guidelines were developed for psychologists who perform evaluations of dementia and age-related cognitive change. These guidelines conform to the American Psychological Association's (APA's) "Ethical Principles of Psychologists and Code of Conduct". The term guidelines refers to statements that suggest or recommend specific professional behavior, endeavors, or conduct for psychologists. (Contains 1 footnote.)