Representation-mediated extinction of conditioned flavor aversions

Conditioned flavor aversions were extinguished by presenting without consequence auditory stimuli that had been previously paired with the aversive flavor. In Experiment 1, rats that received tone-sucrose pairings, then sucrose-lithium chloride (LiCl) pairings, and finally repeated tone-alone presentations showed greater sucrose consumption in subsequent testing than rats that received similar sucrose-LiCl pairings and tone-alone presentations but no initial tone-sucrose pairings. Experiment 2 demonstrated the stimulus specificity of the mediated extinction observed in Experiment 1. In Experiment 3, rats that received first-order light-food and second-order tone-light pairings prior to sucrose-LiCl pairings did not show greater subsequent sucrose consumption when extinction of the second-order tone intervened. These results suggest that conditioned stimulus (CS)-evoked representations of events can substitute for those events themselves in the extinction of previously established associations.     

A STRUCTURE-MAPPING APPROACH TO COGNITIVE DEVELOPMENT

Several contemporary theories of cognitive development appear to agree that children progress through a hierarchy of increasingly powerful cognitive organizations, and that higher-level organizations impose greater information-processing loads. Although theories differ in their method of defining both the levels and the information-processing loads they impose, it is possible to find considerable common ground. In this paper it is argued that the different levels of cognitive organization can be attributed to a hierarchy of structure-mapping rules. Structure mapping is part of the process by which children represent and understand concepts. Four levels of structure mapping are defined. The levels, from lowest to highest, are based on element mappings, relational mappings, system mappings and multiple-system mappings. The higher-level rules are more ‘abstract’ in the sense of being less dependent on specific properties of each task, and are more transferable. However, they also impose higher information-processing demands. Children who lack the information-processing capacity for a particular level of structure mapping will be able to attain concepts that belong to that level. The theory is used to predict the characteristic age of attainment of cognitive tasks including transitivity, classification, interpretation of algebraic expressions, analogies, logical reasoning, and hypothesis testing. It is argued that the four-structure mapping levels can subsume the four main stages of cognitive development.     

In search of psychoticism: Some conclusions revised

Two reports of a substantial relationship between Psychoticism, as measured by the E.P.Q. P-scale, and the trait of Impulsiveness prompted a reanalysis of data, part of which had already formed the basis for the conclusion that individual differences in measured Psychoticism could best be accounted for in terms of the trait of Conformity. The inclusion of Impulsiveness as a variable in the reference set leads to the conclusion that most of the variance of Psychoticism can indeed be accounted for in terms of Impulsiveness, although Conformity still makes a non-trivial contribution.     

Relationships between dissatisfaction with specific body characteristics and the Sociocultural Attitudes Toward Appearance Questionnaire-3 and Objectified Body Consciousness Scale

Body dissatisfaction was studied in 123 predominately European-American college women. Desired changes in body characteristics were associated with scores on the Sociocultural Attitudes Toward Appearance Questionnaire (SATAQ-3) and the Objectified Body Consciousness Scale (OBCS). All SATAQ-3 measures were associated with desired changes in bust size and height, but were not related to desired upper body size. In contrast, the OBCS Surveillance and Body Shame Scales were related to desired upper body size, but were not related to desired bust size or height. As hypothesized, the SATAQ-3 Pressure and Internalization-General Scales and the OBCS Surveillance and Body Shame Scales were related to desired weight and lower body size. Results indicate body dissatisfaction is a complex construct and different aspects of this construct are related to different dispositional measures. Results also indicate that the OBCS is a more narrowly focused measure than the SATAQ-3.     

Prejudice as Viciousness: Marie de Gournay and Anton Wilhelm Amo

Marie de Gournay and Anton Wilhelm Amo, though thinking and writing in different social contexts, each offer an account of prejudice which bears a deep philosophical resonance to that of the other. This resonance is striking and mutually illuminating: Gournay and Amo develop a view of prejudice as a kind of epistemic and moral viciousness that damages both the prejudicial person and their socio-epistemic neighbors. Their accounts highlight how agents are rightly held responsible for prejudice, as it is the agents' epistemic negligence and moral failure that allows prejudice to take hold. As such, their view offers a balance between a critical examination of individuals and an acknowledgement of the deep sociality that pervades the epistemic domain.     

Induction of Relational Schemas: Common Processes in Reasoning and Complex Learning

Five experiments were performed to test whether participants induced a coherent representation of the structure of a task, called a relational schema, from specific instances. Properties of a relational schema include: An explicit symbol for a relation, a binding that preserves the truth of a relation, potential for higher-order relations, omnidirectional access, potential for transfer between isomorphs, and ability to predict unseen items in isomorphic problems. However relational schemas are not necessarily coded in abstract form. Predictions from relational schema theory were contrasted with predictions from configural learning and other nonstructural theories in five experiments in which participants were taught a structure comprised of a set of initial-state,operator → end-state instances. The initial-state,operator pairs were presented and participants had to predict the correct end-state. Induction of a relational schema was achieved efficiently by adult participants as indicated by ability to predict items of a new isomorphic problem. The relational schemas induced showed the omnidirectional access property, there was efficient transfer to isomorphs, and structural coherence had a powerful effect on learning. The “learning to learn” effect traditionally associated with the learning set literature was observed, and the long-standing enigma of learning set acquisition is explained by a model composed of relational schema induction and structure mapping. Performance was better after reversal of operators than after shift to an alternate structure, even though the latter entailed more overlap with previously learned tasks in terms of the number of configural associations that were preserved. An explanation for the reversal shift phenomenon in terms of induction and mapping of a relational schema is proposed. The five experiments provided evidence supporting predictions from relational schema theory, and no evidence was found for configural or nonstructural learning theories.     

The Problem of Religious Language ‘Look at it this way’ (Wittgenstein)*

This essay is critical of some of the attempts made to solve problems of meaning in religious languages, but remains open-minded about them and accepts the Wittgensteinian invitation to look at their dissolution by way of the experiences of meaning and the aspects of language on which they rely. I have argued that there were and are no lasting problems with religious language per se and that the force and meaning of what is said in using religious language over time and circumstance may vary even to the point of having to retrieve concepts feared lost. We may in addition give ourselves our own personal interpretations by which we want to live and discuss with those in our space of reasons where good conversation is ever an inexhaustible provision on the way to enlightened understanding. Furthermore, we are not merely passive recipients of the meanings and significance of the languages we know. Finally, much of the meaning of religious language comes with the experience of being struck again by what has always been loved and by new aspects of, or different ways of taking, what is presented.