Delayed matching in the pigeon: Effect on performance of sample-specific observing responses and differential delay behavior

Pigeons were trained on a delayed matching-to-sample task with a 0-sec delay and then transferred to a 1-sec delay (Experiment 1) or were trained with mixed 0-sec/1-sec delays and then transferred to longer mixed delays up to 28 sec (Experiment 2). Four groups were distinguished by the nature of the observing response required to each sample color (red and blue). For Group NN pecks were allowed to neither color. For Group PcPc pecks were required to both colors. For Group PcN pecks were required to red but were not allowed to blue. For Group PcPt pecks were required at the center key in the presence of red, but at a key located directly above the center key in the presence of blue. The results of both experiments indicated significant effects of both Pecking vs Not Pecking, and Sample-Specific vs Sample-Independent Responding. At the longer delays individual differences in sample-specific delay behavior were a better predictor of performance than the behavior required in the presence of the sample.     

Teacher attitudes toward stuttering

Attitudes of 100 elementary school teachers toward stuttering were studied using the Teacher Attitudes Toward Stuttering (TATS) Inventory. Teacher attitudes, as indicated by TATS Inventory scores, were compared with teacher knowledge of stuttering, age of teacher, number of years teaching experience, educational level, and whether the teacher had personal experience with a stutterer. Results indicated that significant positive correlations existed between teacher attitudes toward and knowledge of stuttering. Significant negative correlations were demonstrated between teacher attitudes/knowledge of stuttering and the presence of a stuttering child in the classroom. The applicability of the TATS Inventory as a clinical instrument in its current form and the research needed to enhance its flexibility are discussed.     

Short-term proactive inhibition in the pigeon

Proactive inhibition in the pigeon was studied using a delayed-color-matching-to-sample task, with and without presentation of stimuli prior to the sample. Interference theory predicts that, relative to control performance, the disruptive effects of a prior stimulus should increase over a retention interval, while decay theory predicts that such disruptive effects should decrease over time. Results supported decay theory when performance was at a low level and interference theory when performance was at a high level. With performance at an intermediate level, parallel functions were obtained, an outcome supporting neither theory. It was concluded that the results supporting interference and decay theories were artifactually produced by floor and ceilling effects, respectively, and it was suggested that the results of earlier experiments using the present paradigm may well have been influenced by similar artifacts. Inserting a nondisruptive stimulus between a prior disruptive stimulus and the sample virtually eliminated the disruptive effects of the prior stimulus when tested immediately, but not when tested after 1 sec. The results of the present experiments and related findings can best be explained by either a modified decay theory (Grant, D. S. Proactive interference in pigeon short-term memory. Journal of Experimental Psychology: Animal Behavior Processes 1975, 104, 207–220) or a modified temporal discrimination theory.     

A modern assessment of the basic forms of aphasia

A brief survey of the field of aphasia is presented. Many of the facts described in the neurological classics remain valid, but the interpretation of these facts must be altered. The basic principles of aphasia are reassessed in the light of neuropsychology. Neuropsychological analysis shows sensory (acoustico-gnostic) aphasia to be based upon an impairment in phonemic hearing. Motor aphasia breaks down into afferent (kinesthetic) and efferent (kinetic) aphasia. The former is based upon an impaired kinesthetic input into the speech functions, which results in a special type of oral apraxia. Efferent (kinetic) aphasia is based upon a breakdown in the kinetic organization of speech motor acts. Nominative (amnestic) aphasia consists of a number of forms, each based on either a weakness of visual or auditory analysis or difficulty in selection between evoked memory traces. “Transcortical motor aphasia” proves to be either perseverative aphasia, i.e., aphasia in which the dynamics of plasticity are impaired, or the result of the impairment of internal speech. The basic defect underlying “conduction” aphasia is beginning to be understood as a weakened acoustico-gnostic function or difficulties in retarding sideline associations.     

THE MACHINE IN THE GHOST: TRANSHUMANISM AND THE ONTOLOGY OF INFORMATION

An ontology of information belies our common intuitions about reality today and animates and governs both explicit scholarly study in philosophy and the sciences as well as the ideologies that are growing out of them. Transhumanism is one such technoscientific ideology that holds to a very specific ontology of information which need not be the only one on offer. This article argues that the transhumanist ontology of information exhibits gnostic and docetic religious overtones in it and that it devalues physical existence. At the same time, despite claiming a rejection of supernature, hypothetical transhumanist practices (such as mind-uploading) posit the infosphere as a kind of supernatural realm that is often set in opposition to the natural world. This article presents a critique of transhumanist conceptions of information and offers an alternative ontology of information that more adequately accounts for the distinction between the natural and supernatural as well as the integrity of the physical world.     

Higher Pantheism

Romantic sensibility and political necessity led Humphry Davy, Britain's most prominent scientist in the first quarter of the nineteenth century, to pantheism: nature worship, involving for him a fervent belief in the immortality of the soul. Rapt with a vision of sublimity, from mountain tops or balloons, men of science in succeeding generations also found in pantheism a reason for their vocation and a way of making sense of their world. It should be seen as an alternative both to active participation in church life (like Faraday's) and to a gritty agnosticism (like Huxley's), indicating again how subtle and complex relationships were between science and religion in the nineteenth century.     

The Erotic Eucharist

Pope Benedict XVI's encyclical Deus Caritas Est continues the magisterium's twentieth‐century shift from an act‐oriented, procreative approach to sexual ethics to what I will term a heterosexually personalistic one. Situating a heterosexual anthropology within a heterosexual cosmology, Benedict argues that just as God loves humanity with heterosexual eros, so must human beings love each other heterosexually. Although Benedict depends upon the explanatory power of heterosexuality, he perhaps unwittingly ends up depicting God's love not as iconically heterosexual, but as queer. In casting God's love as queer, I do not, even analogously, impute to God a type of homosexuality as Benedict does a heterosexuality. Instead, by drawing attention to the discursive specificity and historical instability of both homosexuality and heterosexuality, I use “queer” to recognize God's love as beyond categorization and as strange; it cannot be corralled into or contained by the historically specific notions of heterosexual and homosexual. But this essay does not merely deconstruct Benedict's heterosexually personalistic cosmology. It uncovers in Benedict's Eucharistic transfiguration of marital love a new and promising way of situating discussions about the ethics of sex.     

I WALK THE LINE: COMMENT ON MIKAEL LEIDENHAG ON THEISTIC EVOLUTION AND INTELLIGENT DESIGN

Is theistic evolution (TE) a philosophically tenable position? Leidenhag argues in his article “The Blurred Line between Theistic Evolution and Intelligent Design” that it is not, since it, Leidenhag claims, espouses a view of divine action that he labels “natural divine causation” (NDC), which makes God explanatory redundant. That is, in so far as TE does not invoke God as an additional cause alongside natural causes, it is untenable. Theistic evolutionists should therefore “reject NDC and affirm a more robust notion of divine agency.” However, this will, Leidenhag claims, have the effect that theistic evolutionists “will move their position significantly closer to Intelligent Design,” and so the line between TE and intelligent design is (or ought to be?) blurred. If successful, the criticism by Leidenhag would be bad news for theists who want to take science seriously and good news for those scientistic atheists according to whom there simply is no scientifically respectable way of combining theism and modern natural science in an overarching worldview. So, is TE stuck between a rock (of redundancy) and a hard place (of pseudo-science)? No, at least not due to the criticism offered by Leidenhag—but maybe religious naturalism is?     

Beyond Deep Incarnation: Rethinking Christology in Radical Lutheran Terms

This article takes the demise of Christendom and what Diana Butler Bass calls the end of religion as its point of departure for a “radical” rethinking of God in fully kenotic terms. It rejects any vestige of otherworldly transcendence as a temptation to escapism, inviting us instead to seek God's complete presence among us here in the world. Going beyond Niels Gregersen's understanding of the deep incarnation of the Logos and starting instead with a complete commitment to the infra‐Lutheranum, the author presents a radical Lutheran theology that embraces a total kenosis of God whose liberating and life‐giving reappearance we must find implicit among us in unexpected places, not least of which might include the embers of a dying church or the crumbling of our religious institutions.     

Pyrrhonism in the Political Philosophy of Thomas Hobbes

The importance of Pyrrhonism to Hobbes's political philosophy is much greater than has been recognized. He seems to have used Pyrrhonist arguments to support a doctrine of moral relativity, but he was not a sceptic in the Pyrrhonist sense. These arguments helped him to develop his teaching that there is no absolute good or evil; to minimise the purchase of natural law in the state of nature and its restrictions on the right of nature; virtually to collapse natural law into civil law; and to make the sovereign the political, moral and theological epicenter of his political system.