Braille learning: Relative importance of seven variables

A number of experiments have demonstrated that the learning of braille is affected by a variety of factors. The present experiment was carried out to determine the relative importance of these variables for braille learning. The variables were stimulus set discriminability (high, low), study modality (visual, haptic), test modality (visual, haptic), study size (large vs standard braille cell), test size (large vs standard braille cell), study rate (5 or 10 seconds per item), and test rate (5 or 10 seconds per item). The results showed that study modality, stimulus set discriminability, and test modality were the variables mainly responsible for differences in performance during acquisition. Some practical and theoretical implications of these results are considered.     

BELIEFS OF A CHRISTIAN MINISTER IN LIGHT OF CONTEMPORARY SCIENCE

Abstract. This paper states the author's understanding of the doctrines of the Christian faith in the light of her scientific background and her interpretation of current evolutionary, neuropsychologi–cal, and other scientific theories. It contains the actual ordination vows and her response to them, based upon an outline of questions suggested by the United Church of Christ.     

MICHAEL POLANYI ON ART AND RELIGION: SOME CRITICAL REFLECTIONS ON MEANING

This paper is a critique of the theory of meaning in art and religion that Michael Polanyi developed in his last work entitled Meaning. After giving a brief summary of Polanyi's theory of art, I raise two serious difficulties, not with the theory itself, but with the claims Polanyi makes about the relation of meaning in art to science and religion. Regarding the first difficulty, I argue that Polanyi betrays an earlier insight when in Meaning he attempts to dissociate meaning in art from meaning in science; instead I argue that both science and art are aesthetic enterprises. Regarding the second, I argue that Polanyi's account of religion is an aesthetic reduction, that meaning in religion, at least in the Western tradition, is not so much an aesthetic as it is an existential matter.     

Effects of a brief stimulus accompanying reinforcement on instrumental responding in pigeons

The responding of pigeons on a variable interval schedule of reinforcement was investigated in four experiments. In some conditions in each experiment reinforced keypecks were accompanied by a brief (0.5-sec) flash of the houselight. This procedure resulted in a low rate of response in comparison with that found in conditions when response-contingent light flashes occurred uncorrelated with reinforcement (Experiments 1 and 2) or when no light flash was presented (Experiment 3). Experiment 4 allowed a comparison between the effects of a signal accompanying the reinforced response and one accompanying the delivery of “free” food. Signaling the delivery of earned food produced a lower rate of response than did signaling the delivery of free food. The role of stimulus-reinforcer and response-reinforcer associations in producing these effects is discussed.     

TEACHING JOB INTERVIEW SKILLS TO RETARDED CLIENTS

Six retarded adults were taught job application and interview skills including introducing oneself, filling out a standard job application form, answering questions, and asking questions. A combination of instructions, modeling, role playing, and positive and corrective feedback was used across a multiple baseline experimental design. After training, the clients' performance in each area improved substantially over baseline levels. In addition, the newly taught skills appeared to generalize to a different office, application form, and interviewer.     

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.     

Is preschool education more highly valued for boys than girls?

Questionnaires concerning reasons for enrolling one's child in nursery school were completed by 599 parents in a Midwestern city. Parents of girls and boys did not differ in mean ratings of reasons. However, a greater number of reasons were rated as more important by boys' parents than by girls' parents for both lower- and middle-class respondents. Proportionately more lower-class boys than lower-class girls were enrolled in the city's nursery schools. These data are consistent with the hypothesis that lower-class parents consider preschool education to be more important for boys than girls.