Abstract
Graded doses of marihuana were administered to five adults in a longitudinal repeated-measurements design. Speed of response was the basic parameter measured across tests of increasing cognitive involvement. Marihuana produced significant dose-response effects of impaired performance in all test scores. However, single automatic motor abilities demonstrated greater sensitivity than tests of greater complexity. Evidence is presented for tolerance development.
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This research was supported by USPHS Grant MH-04669.
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Borg, J., Gershon, S. & Alpert, M. Dose effects of smoked marihuana on human cognitive and motor functions. Psychopharmacologia 42, 211–218 (1975). https://doi.org/10.1007/BF00421258
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DOI: https://doi.org/10.1007/BF00421258