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An Examination Of The Strength And Locus Of Interim Activities During Periods Of Nonreinforcement On Various Simple And Multiple Schedules Of Food Reinforcement, Barbara Elizabeth Mann
An Examination Of The Strength And Locus Of Interim Activities During Periods Of Nonreinforcement On Various Simple And Multiple Schedules Of Food Reinforcement, Barbara Elizabeth Mann
Digitized Theses
Three experiments were conducted to investigate Staddon's account of interim activities as induced behaviors which occur at times when a reinforcer is unlikely to be delivered (S('-) times). These experiments examined Staddon's S('-) interpretation of interim behavior by studying drinking and wheel running on various simple and multiple schedules of food reinforcement.;Experiments 1 and 2 were concerned with Staddon's contention that drinking is a representative interim activity which is occasioned by the unavailability of food rather than by the presence of food per se or its ingestion. Contrary to other accounts of schedule-induced polydipsia, this interpretation infers that the link …
The Structure Of Associative Memory Traces: A Mathematical Analysis Of Learning Associative Clusters, Mark Lebas Howe
The Structure Of Associative Memory Traces: A Mathematical Analysis Of Learning Associative Clusters, Mark Lebas Howe
Digitized Theses
Two theories of associative memory that differ in the hypothesized structure of the memory trace (multiple independent traces or a single unitary trace) and in the way in which these representations are acquired (gradual strengthening or all-or-none) were examined in the context of a list-learning task. The associative, or multiple trace theory, characterizes memorial representation as a series of distinct memory locations that are independently linked together. Acquisition proceeds by continuously incrementing the strength of interconcept links. The Gestalt, or unitary trace theory, on the other hand, characterizes memorial representation as a single unitary structure. According to this model, acquisition …
Forgetting Of Visual Discriminations By Pigeons, Philipp James Kraemer
Forgetting Of Visual Discriminations By Pigeons, Philipp James Kraemer
Digitized Theses
A series of three experiments examined the forgetting of visual discriminations in pigeons. The problems consisted of feature discriminations, with dot displays as the discriminative stimuli, and involved a successive go/no-go pecking-response. It was found in all three experiments that pigeons that had been trained to refrain from pecking an S- display, resumed pecking at these displays after retention intervals. It was argued that these data represent the first unequivocal demonstration of forgetting of discriminations in pigeons.;In addition to the simple demonstration of forgetting, it was found in Experiment 1 that the amount of forgetting progressively increased, in a negatively …