Organization of and access to semantic memory in aphasia

Previous experiments with picture sorting and matching tasks have shown aphasics to give more deviant responses than controls when decisions require the identification of single features of concepts, whereas their responses are close to normal whenever decisions have to be based on the relative overlap of broad associative fields. The present experiment was designed to compare picture matching based on single features (property verification) with picture matching based on category membership (category verification). Fifty-five aphasics (14 amnesics, 18 Brocas, 13 Wernickes, 10 global aphasics) and 29 right-brain-damaged control patients served as subjects. Aphasics were poorer than right hemisphere controls on property as well as on category sortings, especially when the sorting criterion was not a dominant property of the object or when the object in question was not a typical member of the criterion category. Contrary to other studies, the "semantic distance" variable did not differentially affect Brocas as compared to Wernickes aphasics. Verbal labels denoting the sorting criterion and added to the picture presentation did not affect the performance of the right hemisphere controls but significantly improved that of the aphasics.     

Functional magnetic resonance imaging: Overview and methods for psychological research

Functional magnetic resonance imaging (fMRI) allows noninvasive imaging of hemodynamic changes related to neural activity. This technique can be used in single-subject designs and can provide millimeter spatial resolution and temporal resolution in the range of 5–10 sec. This paper provides a brief introduction to MRI techniques and their application to functional neuroimaging, focusing on methodological issues that are of particular concern to psychologists, including methods for presenting computerized stimuli to subjects without disrupting the scanner, experimental design issues, and statistical analysis and image processing procedures. To illustrate methodological issues, recent results from a series of studies looking at the topographic organization of visual cortex are presented. General issues concerning limitations in this technique, future directions in its development, its relationship to other neuroimaging techniques, and the role of functional neuroimaging in psychological research are addressed in the Discussion.     

ON THE TRANSDISCIPLINARY NATURE OF THE EPISTEMOLOGY OF DISCOVERY

Abstract. Despite the by now historical tendency to demarcate scientific epistemology sharply from virtually all others, especially theological "epistemology ," it has recently been recognized that both enterprises share a great deal in common, at least as far as the epistemology of discovery is implicated. Such a claim is founded upon a psychological analysis of figuration, where, it is argued, metaphor plays a crucial role in the mediation of discovery, in the domains of science and religion alike. Thus, although the conventionally conceived scientific method is crucial to the enterprise, primacy must nonetheless be accorded to discovery , which drives virtually all disciplines.     

The impact of mode of presentation on gender differences in social perception

This research investigated the conditions under which males might perceive sexuality in females in heterosexual interactions (the Abbey effect). Caucasian male and female couples participated in a brief interaction in which they were rated by observers. Interactants also rated themselves as well as their partners. These live interactions were videotaped, audiotaped, and photographed, and subsequently rated by other observers (subjects). Subjects made ratings on a variety of dimensions, including adjectives relating to the sexuality of the interactants as well as the interactants' desire for future interaction with their partners. Results indicated that males attributed more sexuality and a higher desire for future interactions to females they observed or with whom they interacted than females did. Further, the tendency to attribute sexuality was affected by way in which stimuli were presented to the raters. Photos, which had the least amount of information relative to the other methods, produced the highest sexuality and future interaction ratings, suggesting that stereotyping might play a role. Implications of the results and future research are discussed.This research was based on a master's thesis conducted by the first author under the direction of the second author. We gratefully acknowledge the assistance of Anthony J. Conger in the design and analysis of this research.To whom reprint requests should be addressed at Purdue University, Department of Psychological Sciences, West Lafayette, IN 47907.     

Conflict monitoring and anterior cingulate cortex: an update

One hypothesis concerning the human dorsal anterior cingulate cortex (ACC) is that it functions, in part, to signal the occurrence of conflicts in information processing, thereby triggering compensatory adjustments in cognitive control. Since this idea was first proposed, a great deal of relevant empirical evidence has accrued. This evidence has largely corroborated the conflict-monitoring hypothesis, and some very recent work has provided striking new support for the theory. At the same time, other findings have posed specific challenges, especially concerning the way the theory addresses the processing of errors. Recent research has also begun to shed light on the larger function of the ACC, suggesting some new possibilities concerning how conflict monitoring might fit into the cingulate's overall role in cognition and action.     

Bridging the Gap Between Prevention Research and Practice: The Interactive Systems Framework for Dissemination and Implementation

If we keep on doing what we have been doing, we are going to keep on getting what we have been getting. Concerns about the gap between science and practice are longstanding. There is a need for new approaches to supplement the existing approaches of research to practice models and the evolving community-centered models for bridging this gap. In this article, we present the Interactive Systems Framework for Dissemination and Implementation (ISF) that uses aspects of research to practice models and of community-centered models. The framework presents three systems: the Prevention Synthesis and Translation System (which distills information about innovations and translates it into user-friendly formats); the Prevention Support System (which provides training, technical assistance or other support to users in the field); and the Prevention Delivery System (which implements innovations in the world of practice). The framework is intended to be used by different types of stakeholders (e.g., funders, practitioners, researchers) who can use it to see prevention not only through the lens of their own needs and perspectives, but also as a way to better understand the needs of other stakeholders and systems. It provides a heuristic for understanding the needs, barriers, and resources of the different systems, as well as a structure for summarizing existing research and for illuminating priority areas for new research and action. The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the Centers for Disease Control and Prevention.     

Values in the bank: Value preferences of bank frontline workers and branch managers

The present study investigated the value preferences of frontline workers and branch managers working in a large bank in Israel. Value preferences of bank workers (n = 98) were compared with those of a matching sample drawn from the Israeli general population (n = 152). In addition, value preferences of bank frontline workers were compared with those of bank branch managers and deputy managers. Finally, the relationships between personal value preferences and the workers’ career motivation were examined. The results indicate that compared to the general population, bank workers have a higher preference for conformity, hedonism, and power values and a lower preference for benevolence, universalism, and self-direction values. Compared to the frontline workers, the bank branch managers and deputy managers reported a higher preference for achievement values and a lower preference for tradition values. Higher career motivation was associated with a higher preference for achievement and power values and a lower preference for benevolence values.