The effects of marijuana and alcohol usage on handwriting.

In this study the handwriting of twelve individuals under the influence of marijuana, alcohol, and a combination of the two was compared with control samples. It was found that marijuana smoking in moderate amounts had less effect on the handwriting of the individuals than did alcohol. It was also found that when the two were combined the gross changes observed were probably due to the effect of the alcohol alone.

[1]  L E Hollister,et al.  Marihuana and alcohol, Time production and memory functions. , 1972, Archives of general psychiatry.

[2]  G. Salvendy,et al.  Marijuana and Human Performance , 1975, Human factors.

[3]  J. Manno,et al.  The influence of alcohol and marihuana on motor and mental performance , 1971, Clinical pharmacology and therapeutics.

[4]  Purtell Dj Effects of drugs on handwriting. , 1965 .

[5]  R. Straight,et al.  Sensory, perceptual, motor and cognitive functioning and subjective reports following oral administration ofΔ9-Tetrahydrocannabinol , 1976, Psychopharmacology.

[6]  A. Rabin,et al.  The effects of alcohol on handwriting. , 1953, Journal of clinical psychology.

[7]  A. Crancer,et al.  Comparison of the Effects of Marihuana and Alcohol on Simulated Driving Performance , 1969, Science.

[8]  P Bech,et al.  Cannabis and Alcohol: Effects on Simulated Car Driving , 1973, Science.

[9]  H. Abramson,et al.  Lysergic Acid Diethylamide (LSD-25): XVIII. Effects of LSD-25 and Six Related Drugs upon Handwriting , 1956 .

[10]  O Hilton,et al.  A study of the influence of alcohol on handwriting. , 1969, Journal of forensic sciences.

[11]  Louis S. Goodman,et al.  THE PHARMACOLOGICAL BASIS OF THERAPEUTICS , 1966 .

[12]  D. W. Goodwin,et al.  Marijuana: CNS depressant of excitant? , 1974, The American journal of psychiatry.

[13]  P. D. King,et al.  Meprobamate and small amounts of alcohol. Effects on human ability. coordination. and judgment. , 1960, JAMA.

[14]  H STEINBERG,et al.  Simple Measures of Handwriting as Indices of Drug Effects , 1964, Perceptual and motor skills.

[15]  P. Bech,et al.  Cannabis and alcohol: Effects on estimation of time and distance , 1973, Psychopharmacologia.

[16]  W. Roth,et al.  The effect of marihuana on tracking task perfomance , 2004, Psychopharmacologia.