A ROLE FOR NEGATIVE REINFORCEMENT OF RESPONSE OMISSION IN PUNISHMENT?

This experiment attempted to disentangle response-rate reductions controlled by the direct suppressive effects of a punisher from those due to negative reinforcement of response omission. Key-peck responding of pigeons was maintained by a conjoint variable-interval 3-min schedule of food presentation variable-interval 30-s schedule of response-dependent electric shock presentation. Omission of responses for 5, 10, or 30 s resulted in the possibility of canceling a scheduled shock. Response rates were a function of required pause duration, with lower rates occurring when longer periods of response omission were required for shock cancellation. These results show that, with several parameters of punishment held constant, response rates were controlled by the negative reinforcement contingency. Such a finding argues for renewed consideration of the role of negative reinforcement in punishment contingencies.     

REPEATED ACQUISITION OF BEHAVIORAL CHAINS: RESPONSE SEQUENCES OR CONDITIONAL DISCRIMINATIONS?

The purpose of this study was to determine whether pigeons learn a sequence of positional responses or a series of conditional discriminations under a repeated-acquisition-of-behavioral-chains procedure. Three pigeons were trained under a repeated-acquisition procedure in which three different key colors served as stimuli correlated with the three steps in a chain. The order of presentation of the three stimuli was altered during the latter part of each test session after acquisition had occurred. If the pigeons had acquired a response sequence, the pattern of responding should remain the same as in the initial portion of the test session. However, if the pigeons had acquired a conditional discrimination, the response pattern should change in accordance with the changed order of the key colors. Although the results of this study do not rule out the possibility that the subjects acquired, to some degree, a response sequence, the results suggest that the behavior of pigeons under a repeated-acquisition-of-behavioral-chains procedure is controlled primarily by conditional discriminative stimuli.     

EPISTEMOLOGICAL ORIGINS–EPISTEMOLOGICAL AIMS: RETHINKING POSTMODERN THERAPY IN RESPONSE TO HELD

There has been a great deal of controversy over Barbara Held's use of the term "antirealism" in her now popular critique of postmodern therapy. Many of her respondents have rejected this label, claiming that it restricts the debate and oversimplifies their position. Recognizing that this is so, I nevertheless accept Held's term as a useful signifier of the epistemological framework of postmodern therapy, and, thus, challenge her critique on its own grounds. I argue that Held's critique of this epistemological approach, in fact, misses the epistemological point, targeting ontological issues where there are none, and misinterpreting the original aim behind the shift to epistemological antirealism. It is Held's contention that the antirealist turn aimed at "maximizing individuality" in therapy - a goal which can and should be achieved through realism. Her justification for the latter is a supposed "oscillation" between realism and antirealism in the theory of this movement. To the contrary, l suggest that the aim of this epistemological shift was the resolution of strictly epistemological problems, and that the oscillation that Held identifies is the product of her own conflation of epistemological and ontological issues.     

SENSORY AND PREPARATORY FACTORS IN RESPONSE LATENCY: Simple reaction or compensatory interaction?

The so-called simple reaction is viewed as a dynamically integrated organismic response, modifiable by sensory and preparatory factors and their interactions. The procedure used in presenting several variants of the focal stimulus regulates the specificity of the respondent's preknowledge of stimulus, and thereby the opportunity for interaction as suggested. Additional results confirm the previous finding that the differential effect of stimulus intensity is inversely related to the degree of preknowledge. The interaction is therefore considered to be of a compensatory nature.     

MORPHINE TOLERANCE AS A FUNCTION OF RATIO SCHEDULE: RESPONSE REQUIREMENT OR UNIT PRICE?

Key pecking by 3 pigeons was maintained by a multiple fixed-ratio 10, fixed-ratio 30, fixed-ratio 90 schedule of food presentation. Components differed with respect to amount of reinforcement, such that the unit price was 10 responses per 1-s access to food. Acute administration of morphine, l-methadone, and cocaine dose-dependently decreased overall response rates in each of the components. When a rate decreasing dose of morphine was administered daily, tolerance, as measured by an increase in the dose that reduced response rates to 50% of control (i.e., the ED50 value), developed in each of the components; however, the degree of tolerance was smallest in the fixed-ratio 90 component (i.e., the ED50 value increased the least). When the l-methadone dose-effect curve was redetermined during the chronic morphine phase, the degree of cross-tolerance conferred to l-methadone was similar across components, suggesting that behavioral variables may not influence the degree of cross-tolerance between opioids. During the chronic phase, the cocaine dose-effect curve shifted to the right for 2 pigeons and to the left for 1 pigeon, which is consistent with predictions based on the lack of pharmacological similarity between morphine and cocaine. When the morphine, l-methadone, and cocaine dose-effect curves were redetermined after chronic morphine administration ended, the morphine and l-methadone ED50s replicated those obtained prior to chronic morphine administration. The morphine data suggest that the fixed-ratio value (i.e., the absolute output) determines the degree of tolerance and not the unit price.     

DOES EFFORT PLAY A ROLE IN THE EFFECT OF RESPONSE REQUIREMENTS ON DELAYED MATCHING TO SAMPLE?

The possible role of "effort" in the accuracy of pigeons' performance on a delayed matching-to-sample procedure was investigated by examining the effects of response requirements that accompanied a trial-initiating stimulus and that accompanied a sample stimulus. In the first experiment, the effect of varying the size of a fixed-ratio requirement for responses during an initiating stimulus was compared to that of varying a similar requirement for responses during the sample stimulus. Accuracy increased reliably with increases in the ratio scheduled during the sample stimulus, but was not significantly affected by increases in the ratio scheduled on the key during the initiating stimulus. In another phase of Experiment 1, sample duration was held constant while the ratio requirement was varied during the initiating stimulus. Again, accuracy of matching to sample was not significantly affected by the size of the ratio scheduled during the initiating stimulus. Experiment 2 provided a systematic replication of these results in another group of pigeons and included a more detailed analysis of responding. These results support the view that increases in sample-response requirement facilitate accuracy of delayed matching by increasing the durations of exposure to the sample stimuli, and do not support a role of effort in the sample-response effect. In Experiment 3, the facilitative effect of responses on the sample but not of those on the initiating stimulus was replicated using a simultaneous matching-to-sample procedure. This finding provides further evidence against an interpretation of response-requirement effects that appeals to effort; the finding also suggests that sample exposure might affect initial discrimination of the sample rather than remembering the sample.     

NATURALISM AND THE CATEGORIES “SCIENCE” AND “RELIGION”: A RESPONSE TO JOSH REEVES

This article is a response to Josh Reeve's “A Defense of Science and Religion.” I begin with the disclaimer that this was not solely my project but a joint enterprise. A common commitment of participants was to make the disciplines of history and theology central to the discussion and explore what new possibilities follows for the field of science and religion. I then address Reeves's two central concerns: first that I am too dismissive of the categories “science” and “religion.” In fact I have not advocated dispensing with these categories, but have insisted than we employ them critically and with a sense of their history. The second concern is that my position on naturalism seems to place me perilously close to advocates of ID or scientific creationism. I deny this, but point out that more work needs to be done, beyond simply invoking methodological naturalism, to clarify the differences between naturalistic and theological approaches to the world.     

SINCE WHEN IS NO NEWS GOOD NEWS? THE RELATIONSHIP BETWEEN PERFORMANCE AND RESPONSE RATES IN MULTIRATER FEEDBACK

Despite the popularity of multirater feedback in practice and research, few studies have examined the issue of response rates in these efforts. This study explored the relationship between performance, vis-á-vis a measure of service quality, and feedback response rates in a large-scale developmental multirater feedback initiative using data from 538 senior service providers, 4,446 coworkers and supervisors, and 1,617 clients. The number of rater responses that the focal individual received was largely unrelated to his or her performance level as rated by his or her clients. More specifically, less than 2% of the variance in response rates was explained by the focal individual's performance. Data representativeness and feedback acceptance implications are discussed.     

DOES FUNCTIONAL COMMUNICATION TRAINING COMPETE WITH ONGOING CONTINGENCIES OF REINFORCEMENT? AN ANALYSIS DURING RESPONSE ACQUISITION AND MAINTENANCE

We examined the effectiveness of functional communication training (FCT) in reducing self-injurious behavior (SIB) and in shaping an alternative (communicative) response while SIB continued to be reinforced. Following a functional analysis of 3 individuals' SIB, we attempted to teach an alternative response consisting of a manual sign to each individual, using the reinforcer that maintained SIB. When FCT was implemented without extinction, SIB remained at baseline rates for all participants, and none of the participants acquired the alternative response. When extinction was added to the training procedure, SIB decreased and manual signing increased for all participants. To determine if signing, when established, would compete with SIB when both were reinforced, extinction was then withdrawn. Signing was maintained and SIB occurred at low rates for 2 individuals, but SIB returned to baseline rates for the 3rd individual, necessitating the reimplementation of extinction. These results suggest that it may be difficult to establish alternative behaviors if inappropriate behavior continues to be reinforced, but that, when established, alternative behavior might compete successfully with ongoing contingencies of reinforcement for inappropriate behavior.     

WHAT EPISTEMIC VALUES SHOULD WE RECLAIM FOR RELIGION AND SCIENCE? A RESPONSE TO J. WESLEY ROBBINS

Abstract. Postmodernism in science rejects and deconstructs the cultural dominance of especially the natural sciences in our time. Although it presents the debate between religion and science with a promising epistemological holism, it also seriously challenges attempts to develop a meaningful relationship between science and religion. A neopragmatist perspective on religion and science is part of this important challenge and eminently reveals the problems and reduction that arise when pragmatist criteria alone are used to construct a holism that renounces any demarcation between different areas of rationality. In this pragmatist vision for a holist culture, the cognitive resources of rationality are bypassed in such a way that a meaningful interaction between theology and science becomes impossible.     

THE “WHERE IS IT?” REFLEX: AUTOSHAPING THE ORIENTING RESPONSE

The goal of this review is to compare two divergent lines of research on signal-centered behavior: the orienting reflex (OR) and autoshaping. A review of conditioning experiments in animals and humans suggests that the novelty hypothesis of the OR is no longer tenable. Only stimuli that represent biological “relevance” elicit ORs. A stimulus may be relevant a priori (i.e., unconditioned) or as a result of conditioning. Exposure to a conditioned stimulus (CS) that predicts a positive reinforcer causes the animal to orient to it throughout conditioning. Within the CS-US interval, the initial CS-directed orienting response is followed by US-directed tendencies. Experimental evidence is shown that the development and maintenance of the conditioned OR occur in a similar fashion both in response-independent (classical) and response-dependent (instrumental) paradigms. It is proposed that the conditioned OR and the signal-directed autoshaped response are identical. Signals predicting aversive events repel the subject from the source of the CS. It is suggested that the function of the CS is not only to signal the probability of US occurrence, but also to serve as a spatial cue to guide the animal in the environment.     

PRIMATES AND RELIGION: A BIOLOGICAL ANTHROPOLOGIST'S RESPONSE TO J. WENTZEL VAN HUYSSTEEN'S ALONE IN THE WORLD?

For a biological anthropologist interested in the prehistory of religion, J. Wentzel van Huyssteen's book is welcome and resonant. Van Huyssteen's central thesis is that humans' capacity for spirituality emerges from a transformation of cognition and emotions that takes place in the symbolic realm, within Homo sapiens and apart from biology. To his thesis I bring to bear three areas of response: the abundant cognitive and emotional capacities of living apes and extinct hominids; the role of symbolic ritual in the evolutionary history of Homo sapiens; and the closely intertwined nature of biology and culture in the workings of evolutionary change.     

ARE SCIENCE AND HUMANISM SUITED TO ENTER THE ANCIENT QUEST OF CHRISTIAN THEOLOGY? A RESPONSE TO LLUÍS OVIEDO

This response reverses the title of Lluís Oviedo's essay (2006) while retaining the structure. In the pendulum swing between science and humanism, theology finds its uniqueness not in refuting either but in subverting them: subverting the scientific quest for certainty without denying its pursuit, and subverting the humanist quest for the unique dignity of the human by reducing it to the most despoiled creature, yet finding in it the presence of the divine. Theological pursuit is about reason and its limits, about brokenness and glory in it. Yet the engagement is unavoidable, for without the scientific pursuit of certainty, incompleteness could never be established; without the humanist search for the uniqueness of the human, its admixed and impure character would not be recognized. The concept of hybridity tries to convey that and is presented in three instantiations: the conflation of the human with machine (cyborg), of humans and other animals (oncomouse), and of the human and the divine. Following these ontological cases of hybridity, at the epistemological level theology becomes hybrid “science” in search of the mythos in the midst of logos, and conversely it is hybrid humanism, for it locates God in the greatest depravity of mammalian existence.     

PRIMATES,HOMINIDS, AND HUMANS—FROM SPECIES SPECIFICITY TO HUMAN UNIQUENESS? A RESPONSE TO BARBARA J. KING,GREGORY R. PETERSON,WESLEY J. WILDMAN,AND NANCY R. HOWELL

In this response to essays by Barbara J. King, Gregory R. Peterson, Wesley J. Wildman, and Nancy R. Howell, I present arguments to counter some of the exciting and challenging questions from my colleagues. I take the opportunity to restate my argument for an interdisciplinary public theology, and by further developing the notion of transversality I argue for the specificity of the emerging theological dialogue with paleoanthropology and primatology. By arguing for a hermeneutics of the body, I respond to criticism of my notion of human uniqueness and argue for strong evolutionary continuities, as well as significant discontinuities, between primates, humans, and other hominids. In addition, I answer critical questions about theological methodology and argue how the notion of human uniqueness, theologically restated as the image of God, is enriched by transversally appropriating scientific notions of species specificity and embodied personhood.