Behavioral treatment of obsessive-compulsive neurosis

Three chronic and severe obsessive-compulsive neurotics were treated with behavioral intervention strategies and psychotropic medication. The effects of treatment were evaluated in three separate experiments with single case experimental designs. The results suggest that response prevention was effective in reducing ritualistic behavior while the effects of flooding and antidepressant medication added little to outcome. The results also suggest that strategies aimed only at reducing compulsive behavior per se are insufficient in eliminating other associated difficulties (e.g., depressive symptoms, interpersonal problems) and that a comprehensive approach to treatment is needed.     

Classes and collections: Conceptual organization and numerical abilities

Collections (e.g., forest, army) and classes (e.g., trees, soldiers) are natural concepts that differ in their organizational principles. Collections are organized into part-whole relations (e.g., trees are parts of a forest). Classes are organized according to class inclusion relations (e.g., oaks are kinds of trees). Because of their part-whole organization, collections are assumed to have greater psychological coherence than classes and therefore an advantage on tasks that require thinking about an aggregate as well as the individuals in it. Number requires aggregate analysis since it is a characteristic of sets, not of individuals. Four studies tested the hypothesized collection advantage in numerical reasoning tasks. In each, children viewed identical displays that were labeled with either class or collection terms. With perceptual input constant, the collection labels in contrast to the class labels promoted children's insight into certain numerical principles and facilitated the use of these principles in a variety of numerical tasks. Collection labels appear to induce a cognitive reorganization of importance to the child: the shift from inclusion to part-whole relations.     

Yes-no answering systems in young children

Across the world's languages two quite different systems are used in answering negative questions such as Aren't you going? In English the speaker answers yes or no depending on the speaker's intention about the matter (e.g., Yes, I am going, if the speaker intends to go). In Japanese, the speaker answers yes or no in agreement or disagreement with the literal statement of the question (e.g., No, I am going, if the speaker is going and thus disagrees with the literal form of the question). One purpose of this study was to see which of these linguistic systems is acquired earlier. The other was to see whether the two systems work independently in bilingual children. The data on positive and negative questions from English and Japanese monolingual children showed that the English system is easier to acquire and the data from Japanese-English bilingual children showed that they used the English system to answer Japanese negative questions. The results suggest that the English system is acquired earlier than the Japanese system and that the two systems interact in bilingual children. These results were discussed in terms of sentence verification models.     

Locus of control and the learning of an artificial language

An experiment was conducted to explore the cognitive processes associated with locus of control beliefs. Internal and external subjects were instructed to remember as much as they can from an array of 21 letter strings generated from a finite state grammar. Although internals and externals did not significantly differ in their ability to recall these items, internals were better able to discriminate grammaticality and nongrammaticality in a new set of letter strings. Thus, although both groups attended to the exemplars, internals extracted more invariance and hence learned more about the underlying structure than externals. These results were discussed in relation to those of Wolk and DuCette (1974) on I-E and incidental learning.     

Lexical discrimination and letter-string identification in the two visual fields.

Right-handed subjects were tachistoscopically presented three-letter words and nonword permutations in a single visual field for 20 msec. Although the subjects were unable to identify the stimuli at this exposure duration, their lexical decisions were better than chance, and were superior in the left visual field. When the exposure duration was increased, subjects demonstrated superior identification of the words in the right visual field. Results are discussed within an information processing framework.     

On the evidence for linguistic abilities in signing apes.

F. Patterson (Brain and Language, 5, 56–71) described signing behavior by a gorilla, Koko, which she interpreted as evidence for linguistic abilities in apes. We evaluate her claim with respect to her evidence, additional evidence from other ape language studies, and studies of the sign language of the deaf. We conclude that her report does not include the appropriate data or analyses and that her conclusions are unjustified. Ape signing shows little resemblance to either the speech of hearing children or the signing of deaf children. Some nonlinguistic interpretations of this behavior and methodological issues are considered.     

Unsophisticated judges' perceptual evaluations of the speech of “successfully treated” stutterers

The purpose of this investigation was to determine if the speech of “successfully therapeutized” stutterers and a group of partially treated stutterers was perceptually different from the speech of normal speakers when judged by unsophisticated listeners. Tape-recorded speech samples of treated stutterers were obtained from leading proponents of (1) Van Riperian, (2) metronome-conditioned speech retraining, (3) delayed auditory feedback, (4) operant conditioning, (5) precision fluency shaping, and (6) “holistic” therapy programs. Fluent speech samples from these groups of stutterers were paired with matched fluent samples of normal talkers and presented to a group of 20 unsophisticated judges. The judges were instructed to select from each paired speech sample presented to them the one produced by the stuttering subject. The results of the analyses showed that five of seven experimental groups were identified at levels significantly above chance. It can be concluded that the fluent speech of the partially and successfully treated stutterers was perceptibly different from the utterances of the normal speakers and that the perceptual disparity can be detected, even by unsophisticated listeners.     

The Evolution of Consciousness and the Theology of Nature

Theology and philosophy have traditionally assumed a radical split between human beings and the rest of creation. Philosophically, the split is usually justified in terms of a locus humanus , some one cognitive trait that human beings possess and nonhuman animals do not. Theologically, this trait is usually identified as that which makes us in the image of God. Research in animal cognition, however, suggests that we are not unique in as many respects as we think we are. This suggests that we rethink the idea of the image of God. In light of this, I propose that we think of nature itself as being in the image of God, with humankind as part of the broader natural and theological process.     

Moral education: An act-utilitarian view1

In this essay, I distinguish two significant act-utilitarian theories of moral education: the traditional rule of thumb view and the Harian intuition view. I argue that there are problems with the traditional view and that an act-utilitarian ought to adopt a version of the Harian view. I then explain and respond to a major objection to the intuition view given by Bernard Williams. Williams argues that the system of moral thought which the Harian view advocates we teach is inherently unstable and is certain to undermine itself. I argue that there is reason to expect a great deal of stability in this system.I wish to thank Richard Brandt, William Frankena and R.M. Hare for their conversation on this and other topics and for their comments on earlier drafts of this paper. I would also like to thank the Association for the Philosophy of Education and the Northwest Philosophy conference for the opportunity to read and discuss versions of the essay.