Erowid References Database
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Jarvik ME, Abramson HA, Hirsch MW, Ewald AT.
“Lysergic acid diethylamide (LSD-25): VIII. Effect on arithmetic test performance”.
J. Psychol.. 1955;39:465.
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Abstract
PROBLEM: The effects of LSD on the solution of simple combinations
of addition and subtractions
MATERIAL: 12 non-psychotic subjects (6F, 6 M), Age range 21-33.
DOSAGE: The tests were carried out 4 times with at least 1 week
intervals between tests. The first test was carried out after placebo, the 2nd after 50 ug LSD orally, the 3rd after_lOO ug LSD
and the 4th after placebo. The tests were carried out approx.
1 1/2 hours after the drug was given.
RESULTS: Scores in tests varied inversely with the dose, i.e.
the higher the dose, the lower the score. Scores under the
various doses were significantly different frcm each other in
5 of 6 comparisons made. There was no significant difference in
the number of errors made under the various doses of LSD.
One subject commented \\\\
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