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Psychology + human behavior

G. Pearlson

2020 DOI: 10.1016/b978-0-12-818174-4.00006-9 (opens in new tab)

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Key findings The chapter argues that cannabis produces diverse behavioral and psychological effects, some of which are explained by cannabinoid receptor distribution and drug-induced alterations in brain circuits. It contends that the drug's "happy, hungry, horny" effects and perceptual and timekeeping changes are more readily explained than its effects on complex mental functions such as sense of self and transcendence. It also discusses cannabis use and psychosis risk, long-term IQ effects, and modification of THC-related effects by terpenes.

Abstract

Abstract This chapter describes cannabis use and risk for psychosis, the drug's long-term effects on IQ and the modification of THC-related effects by terpenes. These discussions of cannabis raise much wider issues that apply to the myriad of recreational drugs affecting mood and consciousness from legal everyday examples, such as caffeine, tobacco, and alcohol; through the illegal, including ecstasy, marijuana, opioids, and psychedelics. cannabis produces a wide diversity of behavioral and psychological phenomena, some of which are explained by knowledge of the distribution of cannabinoid receptors in the brain, and experiments that indicate how drug-induced alterations in various brain circuits are associated with feelings and behaviors influenced by the drug. The “happy, hungry, horny” changes effected by the drug, along with perceptual and timekeeping alterations, seem more readily explained than the drug's effects on more complex and incompletely understood mental functions, such as sense of self and transcendence.

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