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The Effect Of Discrimination Training On Salt And Sugar Taste Thresholds Of Preschool Children, Susan M. Castine
The Effect Of Discrimination Training On Salt And Sugar Taste Thresholds Of Preschool Children, Susan M. Castine
Masters Theses
Using a single-subject A-B-C-D design, this study examined NaCl and sucrose taste thresholds in water, tomato juice, and milk with four 4-year-old children. Taste thresholds were determined by presenting several concentrations of an adulterant (i.e. NaCl, sucrose) in each vehicle, in blocks of ten trials. Subjects evaluated each taste sample by pressing one of two levers (Yes/No response). Detection threshold was defined as the level at which there was 50% correct responding. During Baseline, subjects received no feedback regarding the accuracy of their response. During the differential reinforcement phase, subjects received reinforcement following each correct response. Results suggested that detection …
The Problem Of Reductionism In Theories Of Hemispheric Specialization And Recovery Of Functions, Grant Jackson Butterbaugh
The Problem Of Reductionism In Theories Of Hemispheric Specialization And Recovery Of Functions, Grant Jackson Butterbaugh
Masters Theses
A selective review of functional and anatomical hemispheric asymmetries in humans confirms the doctrine of hemispheric specialization. However, the post-insult phenomenon of recovery of functions challenges theories that posit too strict a correspondence between anatomical structures and functions. Follow-up studies on hemispherectomized and hemidecorticated patients, who later recovered language, support a hypothesis of hemispheric redundancy, rather than "invariant" hemispheric specialization for language. Thus, through an evolutionary selection process, the brain may have developed as two potentially similar organs. Neuropsychological research on recovery phenomena is criticized as neglecting environmental contributions to recovery. Several models of hemispheric specialization are compared with recovery …