Biomedical subjects
R V Hall
Publications and source records attributed to R V Hall.
Use of a concurrent treatment design to analyze the effects of a peer review system in a residential setting.
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Contingent exercise: a mild but powerful procedure for suppressing inappropriate verbal and aggressive behavior.
Two single-subject experiments were conducted in public school classrooms for severely emotionally disturbed children. Both experiments investigated the effects of a treatment requiring a child to exhibit a simple exercise task after a verbal or aggressive response, using reversal and multiple-baseline designs. The independent variable, contingent exercise, required standing up and sitting on the floor five to ten times contingent on an inappropriate behavior. It was found that contingent exercise was easy to carry out, and following it, the child quickly returned to the learning task that had been interrupted by the inappropriate behavior. The contingent exercise procedure required a minimum of prompting or manual guidance. Although contingent exercise was not topographically related to the inappropriate response, it decreased those responses dramatically. The results suggested that contingent exercise was not only more powerful than DRO but also could be administered independently. It was concluded that contingent exercise may constitute an alternative procedure that can be used by therapists confronted with severely abnormal behaviors. It would appear to be particularly relevant in settings where procedures such as timeout and painful consequences find restricted use. Finally, a number of guidelines have been proposed as a safeguard against the misuse of this mild but powerful procedure.
Treatment of esophageal carcinoma: a retrospective review.
Two hundred fourteen patients underwent treatment for carcinoma of the esophagus between January, 1950, and July, 1978, with an over-all 5 year survival rate of 1.9%. Forty-six patients (21.5% of series) underwent esophageal resection with either esophagogastrostomy (37 patients) or colon interposition (nine patients). The operative mortality rate was 18.9% for the esophagogastrectomy group and 33% for the colon interposition patients. "Curative" resections resulted in a 14.3% 5 year survival rate. One hundred twenty-seven patients (59.3% of series) were treated by irradiation therapy, with a mean survival time of 9.6 months for patients receiving "curative" dosage (over 4,500 rads). There were no 5 year survivors in this group. Palliative procedures, such as feeding gastrostomy and palliative (less than 4,500 rads) irradiation therapy, contributed little to patient comfort or survival. We favor a palliative approach to the treatment of esophageal carcinoma and believe that, when possible, esophageal resection with esophagogastrostomy is the preferable form of therapy and offers an occasional cure.
Pseudointimal embolism from a woven Dacron graft.
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Preferred surgical treatment for alveolar cell carcinoma.
An analysis of our experience with 48 patients having bronchiolar or alveolar cell carcinoma is reported. The remarkable biological variability of this peripheral tumor has important surgical implications. Basically, two dominant clinical presentations occur. In the less common diffuse or multinodular form, prolonged survival is infrequent regardless of the therapeutic approach. Often these patients die from respiratory compromise due to the tumor itself. In the more common localized or solitary form the prognosis for cure is good, approximating 47% or higher. Based on the material presented, lobectomy is the preferred method of surgical treatment. In patients manifesting multinodular disease, surgical resection rarely seems warranted. The concept of preserving pulmonary tissue is stressed.
Asymptomatic right lower thoracic nodule.
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Effects of teacher attention and a token reinforcement system in a junior high school special education class.
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Reinforcement procedures and the increase of functional speech by a brain-injured child.
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Experiments with token reinforcement in a remedial classroom.
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Behavior changes in brain-injured children through social reinforcement.
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The changing criterion design.
This article describes and illustrates with two case studies a relatively novel form of the multiple-baseline design called the changing criterion design. It also presents the design's formal requirements, and suggests target behaviors and circumstances for which the design might be useful.