The effects of caffeine on memory for word lists

The present study investigated the effects of caffeine on memory for supraspan word lists. Twelve groups of male and female college students classified as high or low impulsive were administered (PO) 0 mg/kg, 2 mg/kg or 4 mg/kg of caffeine. Subjects listened to four word lists presented at a fast rate and four at a slow rate. Caffeine inhibited females' recall during the slow rate, but not the fast rate. Caffeine had no effect on the recall performance of males. The observed effects of caffeine were not influenced by subjects' typical amount of caffeine consumption, verbal ability, or level of impulsivity. The results suggest that caffeine may impair the efficiency with which females rehearse information in working memory.

[1]  R. Yerkes,et al.  The relation of strength of stimulus to rapidity of habit‐formation , 1908 .

[2]  H. Eysenck.  Biological Basis of Personality , 1963, Nature.

[3]  H. Kucera,et al.  Computational analysis of present-day American English , 1967 .

[4]  Kirby Gilliland,et al.  The interactive effect of introversion-extraversion with caffeine induced arousal on verbal performance , 1980 .

[5]  D. A. Brodie,et al.  Free recall curves: Nothing but rehearsing some items more or recalling them sooner? , 1975 .

[6]  M. Glanzer,et al.  Two storage mechanisms in free recall , 1966 .

[7]  W. Revelle,et al.  The interactive effects of caffeine, impulsivity and task demands on a visual search task , 1983 .

[8]  M. Humphreys,et al.  The interactive effect of personality, time of day, and caffeine: a test of the arousal model. , 1980, Journal of experimental psychology. General.

[9]  W Revelle,et al.  Impulsivity, caffeine, and proofreading: a test of the Easterbrook hypothesis. , 1982, Journal of experimental psychology. Human perception and performance.

[10]  Sam C. Brown,et al.  Comparison of output order in free recall , 1974 .

[11]  W Revelle,et al.  Introversion/extroversion, time stress, and caffeine: effect on verbal performance. , 1976, Science.

[12]  M. Humphreys,et al.  Personality, motivation, and performance: a theory of the relationship between individual differences and information processing. , 1984, Psychological review.

[13]  Barry D. Smith,et al.  Dishabituation and spontaneous recovery of the electrodermal orienting response: Effects of extraversion, impulsivity, sociability, and caffeine , 1981 .

[14]  J. Greden,et al.  Anxiety or caffeinism: a diagnostic dilemma. , 1974, The American journal of psychiatry.