Taste-aversion learning has been a popular paradigm for examining associative processes because it often produces outcomes that are different from those observed in other classical conditioning paradigms. One such outcome is taste-mediated odor potentiation in which aversion conditioning with a weak odor and a strong taste results in increased or synergistic conditioning to the odor. Because this strengthened odor aversion was not anticipated by formal models of learning, investigation of taste-mediated odor potentiation was a hot topic in the 1980s. The (...) present manuscript reviews the history of potentiation research with particular focus given to the stimuli that produce potentiation, the conditions that produce potentiation, the possible mechanism of this phenomenon, and possible reasons for the decline of research in this area. Although the number of published reports of potentiation has decreased since the 1980s, recent physiological and behavioral assessments have advanced the field considerably, and the opportunities for future research are bountiful. Recent physiological experiments, for example, have identified the basolateral nucleus of the amygdala as the key brain region to produce taste-mediated odor potentiation (e.g., Hatfield andGallagher, 1995). Also, recent behavioral experiments have extended the generality of synergistic conditioning effects. Studies have shown that odor can potentiate responding to taste (Slotnick, Westbrook and Darling, 1997) and that augmented responding can be produced in the A+/AX+blocking design (e.g., Batsell and Batson, 1999). With the current understanding of where synergistic conditioning may occur in the brain and the new tools to explore synergistic conditioning, we propose various directions for future research to determine whether taste-aversion learning and synergistic conditioning require unique explanations. (shrink)

This volume contains the first publication in book form of an English translation of Thomas Aquinas's controversial disputed question De unione Verbi incarnati. This disputed question is a remarkable portal into the Angelic Doctor's theology of the hypostatic union, which is recognized as an area in which Aquinas forged some of his most original and penetrating articulations of the Christian faith. In the De unione Verbi incarnati Aquinas presents in five articles material that occupies more than eighteen questions in the (...) third part of the Summa theologiae. The attribution of an esse secundarium to Christ, in the fourth article of the De unione, has been the object of intense debate, for it seems to contradict the account of the Summa. In addition to Professor Nutt's English translation, the volume includes the critical Latin text published by Barbara Bartocci, Klaus Obenauer, and Walter Senner, as well as a substantial introduction. Professor Nutt's introduction carefully unfolds the historical background, technical concepts, sources, and speculative claims needed for understanding the breadth of the biblical and metaphysical contemplation represented in this work; it also includes a detailed exploration of the debate over the fourth article. (shrink)

The victory of realism over idealism at the start of the twentieth century, and of scientific realism over logical empiricism and pragmatism in the mid twentieth century, is a striking phenomenon that calls for historical explanation. In this paper I propose an externalist account, looking at the social and political reasons why realism became attractive, rather than considering the internal factors–the merits of the arguments in favour of realism. I look at the agenda of Roy Wood Sellars’critical realismwhich was not (...) narrowly theoretical, but very much related to his concerns for the development of American society post WW1, as expressed inThe Next Step in Democracy(1916b) andThe Next Step in Religion(1918). I discuss the significance of technocracy in America – not only the increasing influence of scientists and engineers in government, but also the diffusion of the view that social issues are best addressed by scientific, technical means. Counter-cultural critics of technocracy, such as Roszak (1969) claimed that a “scientific world-view” provided an “ideology” for this system of governance. We will see that RW Sellars was explicitly involved in the task of building a scientific world-view, but with political goals that were probably not realised by the post-war establishment. (shrink)