Dennis Tucker

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Operant conditioning principles were used to promote verbalizations based on current event television news stories in three institutionalized 15-year-oll retardates. Percentages of correct responses concerning the videotaped news segments were recorded in four experimental conditions: baseline, massed news with tokens und praise contingent on appropriate(More)
The present work involved the administration of both ethynyl estradiol and levonorgestrel to groups of rats, followed by determination of the homocysteine excretion rate in urine. The results indicate that a statistically significant difference exists between the excreted levels of homocysteine in the urine of both control and levonorgestrel-treated rats(More)
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