identity theory

the theory that mental states are identical with brain states. In token identity theory, identical mental and brain states occur within the individual. Type identity theory extends this to theorize that when two or more people share a mental state (e.g., the belief that ice is cold) they also have the same brain state. Also called central state theory; identity theory of the mind. See also eliminativism; epiphenomenalism; materialism; mind–body problem; physicalism; reductionism.

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Psychology term of the day

January 30th 2025

addiction

n. a state of psychological or physical dependence (or both) on the use of alcohol or other drugs. The term is often used as an equivalent term for substance dependence and sometimes applied to behavioral disorders, such as sexual, Internet, and gambling addictions. A chemical substance with significant potential for producing dependence is called an addictive drug. —addictive adj.