Psychological Effects of Tetrahydrocannabinol

Being stoned: a review of self‐reported cannabis effects

“…Research utilizing the ARCI scales have been mixed in relation to smoked cannabis producing euphoria. While a significant increase on the ARCI euphoria scale has been reported [51], other studies have not reported significant increases [45,50,53]. When the results from a laboratory study was compared with previous research, 'the relatively minor role played by euphoria and elation' was noted [53].…”

“…While a significant increase on the ARCI euphoria scale has been reported [51], other studies have not reported significant increases [45,50,53]. When the results from a laboratory study was compared with previous research, 'the relatively minor role played by euphoria and elation' was noted [53]. A more recent electroencephalographic (EEG) study [54] has reported that euphoria (defined as 'intense good feelings') occurred in multiple short episodes following the first 15 minutes after smoking cannabis, while a moderate dose of alcohol was reported to produce a longer period of euphoria [55].…”

The effect of marihuana dosage on driver performance: Final report

“…Of the 23 subjects 19 stated they believed the placebo to be marihuana; however, all but one rated it weaker than that normally smoked. (Waskow, et. al., 1970).…”

Effect of marijuana on divergent and convergent production cognitive tests.

“…However, these effects were often absent in chronic marijuana smokers (Meyer, Pillard, Shapiro, Mirin, & Fisher, 1971;Weil, Zinberg, & Nelsen, 1968). Negative findings have been reported by Waskow, Olesson, Saltzman, and Katz (1970), who found little if any cannabis-produced impairment of memory, and by Rafaelsen, Bech, and Christup (1973), who observed an impairment of memory and attention only with high doses of marijuana. Tinklenberg, Kopell, Melges, and Hollister (1972) failed to replicate earlier findings and did not find a significant effect of cannabis on the Goal Directed Serial Alternation and Running Memory Span Tests.…”

“…All rights, including for text and data mining, AI training, and similar technologies, are reserved. Mayor's Committee on Oral and smoking Marijuana, 1944Clark, Hughes, and Nakashima, 1970Melges, Tinklenberg, Hollister, and Gillespie, 1970Tinklenberg, Kopell, Melges, and Hollister, 1972Waskow, Olesson, Saltzman, and Katz, 1970Hollister and Gillespie, 1970Abel, 1970, 1971a, 197lb Dornbush, Fink, and Freedman, 1971 Oral on long-term memory (The effect was mainly due to a higher number of false alarms: criterion, 0, rather than sensitivity, d', was affected) Input of verbal material from shortterm memory to long-term store (The effect was probably due to an interference with rehearsal processes) 7.5 mg Recall of 3-letter trigrams, either 22.5 mg immediately or after short-term intervals, up to 18 sec (Interference with short-term memory was found to be greater after longer time intervals)…”