FROM BELIEF TO UNBELIEF–AND HALFWAY BACK

Abstract. Through autobiography, I explain why I cannot accept conventional Christianity or any other form of religious belief. I sketch how, through modern evolutionary theory, I try to find an alternative world-picture, one which is, however, essentially agnostic about ultimate meanings. I characterize my position as being that of "David Hume brought up-to-date by Charles Darwin." I express sad skepticism about ever realizing the hopes on which Zygon was founded.     

Modeling: An analysis in terms of category accessibility

It is proposed that many of the releasing or disinhibiting effects caused by models can be accounted for by information-processing mechanisms, without recourse to the concept of reinforcement. More specifically, it is suggested that the process of viewing a model's behavior involves the activation of an interpretive schema. This renders the information the schema incorporates more accessible for subsequent use. If the schema incorporates (or is closely related to) behavior-specifying information, that information becomes more accessible as well, thus making it more likely to influence overt behavior. Two studies are reported that assessed the plausibility of this reasoning. In Experiment 1 subjects who had viewed an aggressive model perceived greater hostility in the behavior of an ambiguous stimulus person that they subsequently encountered than did control subjects. This finding is consistent with the assumption that the model's behavior activated a conceptual schema for use in interpretation. In Experiment 2 subjects in whom an aggressive schema had been activated under a guise displayed greater aggression in their subsequent behavior in a different context than did control subjects. This finding is consistent with the assumption that activating the conceptual schema also activated behavioral information. The discussion centers on the implications of the findings.     

Effects of sucrose concentration and goal units on runway behavior in the rat

Experiment 1 investigated the between-S and within-S effects of sucrose concentration (32 and 6%) and number of goal units (equal volumes of sucrose presented in single or multiple goal cups). The goal-unit variable had no effect on behavior under any of several test conditions employed. Within-S effects of sucrose concentration were approximately equal to between-S effects; no contrast effects were found. When 64 and 6% sucrose solutions were used as reinforcers in Experiment 2, a simultaneous, but not a successive, negative contrast effect was found. Results were discussed in terms of possible functional differences between the successive and simultaneous contrast paradigms and between sucrose solutions and solid food as reinforcers.     

The New Darwinian Naturalism in Political Theory

There has been a resurgence of Darwinian naturalism in political theory, as manifested in the recent work of political scientists such as Roger D. Masters, Robert J. McShea, and James Q. Wilson. They belong to an intellectual tradition that includes not only Charles Darwin but also Aristotle and David Hume. Although most political scientists believe Darwinian social theory has been refuted, their objections rest on three false dichotomies: facts versus values, nature versus freedom, and nature versus nurture. Rejecting these dichotomies would allow the social sciences to be linked to the natural sciences through Darwinian biology.     

Distraction,amnesia, and the next-in-line effect

Two studies use a free recall task to track, moment by moment, cognitive repercussions of an upcoming performance. As in earlier research, subjects display impaired recall for events which immediately precede an anticipated public performance. This “next-in-line effect” occurs even if the “performance” consists of reading a word to oneself. However, subjects show no memory deficit if their performance is not anticipated, and they have generally poor recall if they know they will be performing—but not when. Distraction and amnesia accounts of these recall deficits are discussed. Ancillary findings illuminate the organization of memory in social settings.     

A perceptual comparison between paired stimulus and single stimulus methods of presentation of the fluent utterances of stutterers

This investigation compared tape recordings containing the fluent utterances of treated stutterers with those of normal speakers as paired stimuli and single stimuli as presented to 20 sophisticated judges. Fluent utterances were obtained from stutterers successfully treated in one of the following programs: (1) Van Riperian, (2) metronome-conditioning speech retraining, (3) delayed auditory feedback, (4) operant conditioning, (5) precision fluency shaping program, and (6) holistic therapy. In addition, a group of partially treated stutterers were included. The original tape recordings containing matched samples of the fluent utterances of a stutterer and normal speaker were presented as paired stimuli. These paired samples were then separated, randomized, and assembled individually on another tape recording and presented as single stimuli to the same judges. The results of the statistical analysis indicated that the fluent utterances of treated stutterers was perceptibly different from the fluent utterances of nonstutterers, regardless of the method of stimulus presentation.     

The relation of esteem and vocational counseling to range of incorporation scores

Range of incorporation scores is a potential outcome measure of vocational counseling. Post-test analysis was used to examine the relation of vocational counseling and esteem to 69 Vietnam veterans' ranges of incorporation scores. Measures of esteem and incorporation for eight professions were obtained from 36 veterans who had just completed 10 hr of group counseling and 33 who were just beginning counseling. ANOVA of the ranges of the incorporation scores indicated that high-esteem veterans had higher ranges than low-esteem veterans (p <.05), and suggested that counseled veterans had higher ranges than noncounseled veterans (p ? .10).     

Consciousness and Self in Animals: Some Reflections

In this essay I argue that many nonhuman animal beings are conscious and have some sense of self. Rather than ask whether they are conscious, I adopt an evolutionary perspective and ask why consciousness and a sense of self evolved—what are they good for? Comparative studies of animal cognition, ethological investigations that explore what it is like to be a certain animal, are useful for answering this question. Charles Darwin argued that the differences in cognitive abilities and emotions among animals are differences in degree rather than differences in kind, and his view cautions against the unyielding claim that humans, and perhaps other great apes and cetaceans, are the only species in which a sense of self‐awareness has evolved. I conclude that there are degrees of consciousness and self among animals and that it is likely that no animal has the same highly developed sense of self as that displayed by most humans. Many animals have a sense of “body‐ness” or “mine‐ness” but not a sense of “I‐ness.” Darwin's ideas about evolutionary continuity, together with empirical data (“science sense”) and common sense, will help us learn more about consciousness and self in animals. Answers to challenging questions about animal self‐awareness have wide‐ranging significance, because they are often used as the litmus test for determining and defending the sorts of treatments to which animals can be morally subjected.     

The Straw Thing of Fallacy Theory: The Standard Definition of 'Fallacy'

Hamblin held that the conception of 'fallacy' as an argument that seems valid but is not really so was the dominant conception of fallacy in the history of fallacy studies. The present paper explores the extent of support that there is for this view. After presenting a brief analysis of 'the standard definition of fallacy,' a number of the definitions of 'fallacy' in texts from the middle of this century – from the standard treatment – are considered. This is followed by a review of the definitions of 'fallacy' in the earlier history of logic books, including those of Aristotle, Whately, Mill and De Morgan. The essay concludes that there is scarcely any support for Hamblin's view that this particular definition of 'fallacy' was widely held.     

A Summary of Michael Ruse's Darwin and Design

Michael Ruse's Darwin and Design: Science, Philosophy, Religion explains the history and philosophical arguments of the design metaphor of evolution. It recounts the historical uses of the metaphor from Plato to twentieth-century American science. Ruse explores the criticisms of the design metaphor and ultimately concludes that it is a beneficial term. The chief contribution of Darwin and Design is that it offers a clear understanding and comparison of the argument from design and the argument to design.