A NINETEENTH-CENTURY IRASian: SARAH ALDEN BRADFORD RIPLEY

Abstract. Almost entirely self-educated, Sarah Alden Bradford Ripley (1793–1867) combined wide-ranging personal studies with the daily responsibilities of a New England minister's wife, mother, and teacher in her husband's boarding school. As she struggled to reconcile the conventional Unitarian Christian beliefs of her time with her own life experience and with the discoveries of advancing science, her childhood faith gave way to skepticism. Gradually she was able to integrate her understanding of nature, science, philosophy, and religion into a mature faith. She would have welcomed the companionship and support of IRAS if it had existed in her day.     

A controlled group study of pedestrian-skill training for the mentally retarded

Pedestrian-skills training procedures were compared using 30 mentally retarded institutionalized adults. Ten subjects were randomly assigned to a no-treatment control group and ten subjects were assigned to each of two modes of pedestrian-skills training. The training methods included a form of individualized classroom training consisting of the practice of correct behavior using movable figures on a scale model of an intersection, vs independence training which emphasized self-evaluation of performance, social reinforcement, sign recognition and the utilization of a mock-up of an intersection on the hospital grounds. Data were taken on sign recognition, verbal and performance based responses to classroom training of pedestrian skills, performance of skills at an intersection on the hospital grounds, and performance of pedestrian skills in the community. Independence training proved to be significantly more effective than no treatment or classroom training. In addition, classroom training proved to be significantly more effective than no treatment at all.     

On the form and location of the Psychometric Bisection Function for time

The Psychometric Bisection Function for time relates the discriminability of intermediate duration stimuli to a short and long training duration. Bisection Functions for animals (R. M. Church & M. Z. Deluty, Journal of Experimental Psychology: Animal Behavior Processes, 1977, 3, 216–228) confirm Weber's Law and also show indifference between short and long reports at the geometric mean of the training durations. Two discrimination processes are studied which, in combination with different constructions of the subjective time scale, result in Bisection Functions which differ in form and location. The two discrimination processes use a likelihood ratio rule or a similarity rule to compare intermediate durations to the training durations. These rules in combination with two different constructions of the subjective time scale result in four models which conform to Weber's Law. For one of the scales subjective time is a power function of real time with the scalar property on variance (Scalar Timing). For the other, subjective time is a logarithmic function of real time with constant variance (Log Timing). Both Log and Scalar Timing assume normality on the subjective scale. Only three of these models also entail the geometric mean at the indifference point. The exception is Scalar Timing with the likelihood ratio discrimination rule. This model entails indifference at approximately the harmonic mean of the training stimuli. Variants of the remaining three models differ theoretically but alternatives are difficult to discriminate empirically. A contrast is provided by a Poisson Timing subjective scale in which variance increases directly with the mean. This scale results in indifference at the geometric mean for both discrimination rules but violates Weber's Law in both cases.     

An application of Michel Meyer's Theory of problematology to David Hume's Diaologues concerning natural religion

This study advances the claim that Hume's Dialogues Concerning Natural Religion, which drew its inspiration and guidelines from Cicero's De Natura Deorum, fulfills four basic elements of Michel Meyer's theory of problematology. In doing so, it is argued, the Dialogues contribute importantly to our understanding of the question-answer pair, and to the notion of rhetoric as a way of knowing.