Marihuana and Temporal Disintegration

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Science  29 May 1970:
Vol. 168, Issue 3935, pp. 1118-1120
DOI: 10.1126/science.168.3935.1118


High oral doses of marihuana extract, calibrated for content of 1 (—)-Δ1-tetrahydrocannabinol, significantly impaired the serial coordination of cognitive operations during a task that required sequential adjustments in reaching a goal. This disintegration of sequential thought is related to impaired immediate memory.

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