Jeremy Osborne

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In a conditional discrimination, 6 college students arranged six Cyrillic letters into groups of three based upon which of two additional Cyrillic letters (contextual stimuli) was present. All subjects demonstrated symmetry and transitivity within each class of equivalent stimuli. In a second conditional discrimination, two more Cyrillic letters were(More)
Six subjects, comprising one class at a school for the deaf, were given reinforcement consisting of time free from school work for remaining seated in the classroom. As a result, the frequency of leaving their chairs was sharply reduced. A second procedure presented free-time not contingent on remaining seated. Little change was seen in the already lowered(More)
In Experiment 1, four developmentally delayed adolescents were taught an A-B matching-to-sample task with nonidentical stimuli: given Sample A1, select Comparison B1; given A2, select B2. During nonreinforced test trials, appropriate matching occurred when B stimuli appeared as samples and A stimuli as comparisons, i.e., the sample and comparison functions(More)
Seventeen pigeons were exposed to a three-key discrete-trial procedure in which a peck on the lit center key produced food if, and only if, the left keylight was lit. The center key was illuminated by a peck on the lit right key. Of interest was whether subjects pecked the right key before or after the response-independent onset of the left keylight. Pecks(More)
The influence of Skinner's Verbal Behavior on the generation of verbal behavior research was examined in a citation analysis that counted the citations of the book from January 1957 to August 1983 and described the fields in which the citations occurred. In a subsequent content analysis, citations were classified as directly influenced by the book if they(More)
Pairs of pictures were classified by the authors and others as related by identity (A-A), basic taxonomy (A-B), superordinate taxonomy (A-C), or by theme (A-D). Two-choice matching-to-sample trial types were composed of these same picture pairs in which the sample was common to the two stimulus pairs in each configuration and, together with the sample, each(More)
BACKGROUND Dental amalgamators may become contaminated internally with metallic mercury. This contamination may result from mercury leakage from capsules during trituration or from the long-term accrual from microscopic exterior contaminants that result from the industrial assembly process. The potential health risk to dental personnel from this(More)