hallucinogen abuse

in DSM–IV–TR, a pattern of drug use marked by recurrent significant adverse consequences related to the repeated ingestion of hallucinogens. This diagnosis is preempted by the diagnosis of hallucinogen dependence: If the criteria for hallucinogen abuse and hallucinogen dependence are both met, only the latter diagnosis is given. In DSM–5, however, both have been combined into single “use disorders” (e.g., phencyclidine use disorder) and are no longer considered distinct diagnoses. See also substance abuse.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

February 17th 2025

maze-bright and maze-dull rats

two groups of rats that were separated based on their performance in a standardized maze problem. Those that performed best were bred with each other, as were those that performed most poorly. Over relatively few generations, there was a complete separation in performance, with none of the maze-bright rats overlapping in scores with maze-dull rats. However, the selective breeding appeared to be specific to the maze tests that were used and did not affect learning ability more generally; moreover, maze-dull rats reared in an enriched environment (see enrichment) could perform as well as maze-bright rats.