Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Letter
  • Published:

Effects of Cannabis and Alcohol on Psychological Tests

Abstract

WE report here psychological data from a combined study on the effect of cannabis and alcohol on simulated car-driving and on psychological tests. The car simulator data showed an effect of cannabis and alcohol on brake time and start time, and a much more pronounced effect of cannabis than of alcohol on time and distance estimation after simulated driving. We have also measured the dose-response curve for cannabis1. This report deals with tests of attention and short-term memory, and of subjective and objective ratings of degree and kind of intoxication.

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Similar content being viewed by others

References

  1. Rafaelsen, O. J., Bech, P., Christiansen, J., Christrup, Henriette, Nyboe, J., and Rafaelsen, Lise, Science (in the press).

  2. Smith, G. M., and Beecher, H. K., J. Pharmacol. Exp. Ther., 126, 50 (1959).

    CAS  PubMed  Google Scholar 

  3. Siegel, S., Non-parametric Statistics (McGraw-Hill, New York, 1956).

    Google Scholar 

  4. Morrow, R. S., in Mayor La Guardia's Committee on Marihuana, The Marihuana Problem in the City of New York—Sociological, Medical, Psychological, and Pharmacological Studies (Cattell, Lancaster, 1944).

    Google Scholar 

  5. Clark, L. D., and Nakashima, E. N., Amer. J. Psychiat., 125, 379 (1968).

    Article  Google Scholar 

  6. Williams, E. G., Himmelsbach, C. K., Wikler, A., Ruble, D. C., and Llody, B. J., Publ. Hlth. Rep. (Wash.), 61, 1059 (1946).

    Article  CAS  Google Scholar 

  7. Caldwell, D. F., Myers, S. A., Domino, E. F., and Merriam, P. E., Percept. Motor Skills, 29, 755 (1969).

    Article  CAS  Google Scholar 

  8. Dornbush, R. L., Fink, M., and Fredman, A. M., Amer. J. Psychiat., 128, 194 (1971).

    Article  CAS  Google Scholar 

  9. Jones, R. T., and Stone, G. C., Psychopharmacologia, 18, 108 (1970).

    Article  CAS  Google Scholar 

  10. Weil, A. T., and Zinberg, N. E., Nature, 222, 434 (1969).

    Article  ADS  CAS  Google Scholar 

  11. Weil, A. T., Zinberg, N. E., and Nelsen, J. M., Science, 162, 1234 (1968).

    Article  ADS  CAS  Google Scholar 

  12. Halpern, Florence, in Mayor La Guardia's Committee on Marihuana, The Marihuana Problem in the City of New York—Sociological, Medical, Psychological, and Pharmacological Studies (Cattell, Lancaster, 1944).

    Google Scholar 

  13. Waskow, I. E., Olsson, J. E., Salzman, C., and Katz, M. M., Arch. Gen. Psychiat., 22, 97 (1970).

    Article  CAS  Google Scholar 

  14. Abel, E. L., Nature, 227, 1151 (1970).

    Article  ADS  CAS  Google Scholar 

  15. Melges, F. T., Tinklenberg, J. R., Hollister, L. E., and Gillespie, H. K., Science, 168, 1118 (1970).

    Article  ADS  CAS  Google Scholar 

  16. Rafaelsen, O. J., Bech, P., and Rafaelsen, Lise, Intern. Pharmacopsychiat. (in the press).

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

RAFAELSEN, L., CHRISTRUP, H., BECH, P. et al. Effects of Cannabis and Alcohol on Psychological Tests. Nature 242, 117–118 (1973). https://doi.org/10.1038/242117a0

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1038/242117a0

This article is cited by

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.

Search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing