Accession Number : AD0775722

Title :   Long Term Effects of Drug Use on General Mental Ability.

Descriptive Note : Final rept. 15 Jun-31 Aug 73,


Personal Author(s) : Stevens,Charles C.

Report Date : DEC 1973

Pagination or Media Count : 91

Abstract : The purpose of the study was to determine if there was significant long-term decrement in general mental ability as a result of drug use. For a sample of known drug users, at least one control subject for each user had been matched as closely as possible to the user by the Air Force on AQE general aptitude index, age at enlistment, year of enlistment and home record. The control subjects were maintained in the use category of their matching drug users and similar distributions were made. These distributions were made for each of seven drug categories. In addition, a similar distribution was made of the number of drugs used by the subject versus performance deciles and of the total number of years any drug was used versus performance deciles. A matrix of intercorrelations was developed for all meaningful variables available in the drug user sample. The results of the study seem to indicate an overall intelligence decrement in the drug user sample, but no significant correlation was observed between duration, quantity or frequency of drug use and change in mental ability. (Modified author abstract)

Descriptors :   *Drug abuse, *Intelligence, Performance(Human), Statistical analysis, Test methods, Cannabis, Amphetamines, Barbiturates, Hallucinogens, Opium alkaloids

Subject Categories : Psychology

Distribution Statement : APPROVED FOR PUBLIC RELEASE