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Clinical Trial
. 1975;40(4):351-8.
doi: 10.1007/BF00421474.

[Effects of (--)delta-9-trans-tetrahydrocannabinol (delta-9-THC) on tests of psychoticism. A study of Eysenck's drug postulate on the effects of hallucinogens in relation to psychoticism (author's transl)]

[Article in German]
A Dittrich, P Bickel, D Zimmer
Clinical Trial

[Effects of (--)delta-9-trans-tetrahydrocannabinol (delta-9-THC) on tests of psychoticism. A study of Eysenck's drug postulate on the effects of hallucinogens in relation to psychoticism (author's transl)]

[Article in German]
A Dittrich et al. Psychopharmacologia. 1975.

Abstract

In a double-blind study on 36 volunteers the effects of 250 mug/kg (--)delta-9-trans-tetrahydrocannabinol p.o. on objective and performance tests measuring psychoticism according to Eysenck were assessed. The hypothesis was tested that subjects treated with delta-9-THC differ from those receiving placebo in the same way as endogenous psychotics differ from normals. Confirmation was obtained in only 5 out of 19 variables. Four of these 5 variables may be considered as tests of concentration.

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