Cognitive changes in conjunctive rule-based category learning: An ERP approach

When learning rule-based categories, sufficient cognitive resources are needed to test hypotheses, maintain the currently active rule in working memory, update rules after feedback, and to select a new rule if necessary. Prior research has demonstrated that conjunctive rules are more complex than unidimensional rules and place greater demands on executive functions like working memory. In our study, event-related potentials (ERPs) were recorded while participants performed a conjunctive rule-based category learning task with trial-by-trial feedback. In line with prior research, correct categorization responses resulted in a larger stimulus-locked late positive complex compared to incorrect responses, possibly indexing the updating of rule information in memory. Incorrect trials elicited a pronounced feedback-locked P300 elicited which suggested a disconnect between perception, and the rule-based strategy. We also examined the differential processing of stimuli that were able to be correctly classified by the suboptimal single-dimensional rule (“easy” stimuli) versus those that could only be correctly classified by the optimal, conjunctive rule (“difficult” stimuli). Among strong learners, a larger, late positive slow wave emerged for difficult compared with easy stimuli, suggesting differential processing of category items even though strong learners performed well on the conjunctive category set. Overall, the findings suggest that ERP combined with computational modelling can be used to better understand the cognitive processes involved in rule-based category learning.     

Forgiveness and Health: Age Differences in a U.S. Probability Sample

Forgiveness is a variable closely related to religiousness and spirituality that has been hypothesized to be protective of mental and physical health. However, we do not clearly understand which aspects of forgiveness are most clearly associated with health outcomes, and the conditions under which these relationships occur. This study used national probability data to systematically examine age differences in the association between forgiveness, religiousness/ spirituality, and respondent reports of mental and physical health. Results showed age differences in the levels of forgiveness of others and feeling forgiven by God. In both cases, middle and old age adults showed higher levels of these forms of forgiveness than young adults. Furthermore, the relationship between forgiveness of others and respondent reports of mental and physical health varies by age. Forgiveness of others was more strongly related to self-reported mental and physical health for middle and old age adults than for young adults.     

Are Arabic numerals processed as pictures in a Stroop interference task?

In a picture-word interference task, picture naming is interfered by an incongruent word, but word naming is hardly hindered by the presence of an incongruent picture. In this study, we investigated whether Arabic digits are processed more like pictures or like words. We report two experiments in which Arabic digits and verbal numerals were confronted in a Stroop task. Arabic digit naming is interfered by the presence of an incongruent verbal numeral, while naming the verbal numeral is not influenced by the presence of an incongruent Arabic digit. In a second experiment, we excluded the hypothesis that the results are due to ignoring the Arabic digits: interferences from an incongruent distracter were similar for both notations in a semantic classification task. It seems that an asemantic conversion for Arabic digits is too slow to influence naming times, and that Arabic digit naming, like picture naming, is semantically mediated.     

The emergence and development of tradition in reform Jewish worship, 1970–1999

It is axiomatic to note the increased amount of traditional ritual, customs, ceremonies and observances in Reform Jewish worship in the past three decades. These include hakafot, talitot, kippot and bowing the head and bending the knee during prayer. Although we may disagree about when to mark the beginning of this increase (Maurice Eisendrath, then president of the umbrella organization of Reform congregations, insisted in his 1964 autobiography, Can Faith Survive?, that he “wanted no neo-Orthodoxy in Reform today”), I argue that the end of the dignified English service with hymns such as “All the World has Come to Serve Thee” became widespread only in the 1970s, primarily because of the influence of a generation of Reform rabbis who, beginning in 1970, were required to spend a year in Jerusalem. I explore the use of the word mitzvah as a test case, noting its absence before this period, the continued discomfort with it on theological grounds (the increase in tradition was not accompanied by any return to traditional theological categories), but the comfort with it when used as an equivalent for tsedakah or tikkun olam. And I use several synagogues as case studies of the implications — better, ambivalence — about this phenomenon.     

Comparative visual search: a difference that makes a difference

In this article we present a new experimental paradigm: comparative visual search. Each half of a display contains simple geometrical objects of three different colors and forms. The two display halves are identical except for one object mismatched in either color or form. The subject's task is to find this mismatch. We illustrate the potential of this paradigm for investigating the underlying complex processes of perception and cognition by means of an eye-tracking study. Three possible search strategies are outlined, discussed, and reexamined on the basis of experimental results. Each strategy is characterized by the way it partitions the field of objects into "chunks." These strategies are: (i) Stimulus-wise scanning with minimization of total scan path length (a "traveling salesman" strategy), (ii) scanning of the objects in fixed-size areas (a "searchlight" strategy), and (iii) scanning of object sets based on variably sized clusters defined by object density and heterogeneity (a "clustering" strategy). To elucidate the processes underlying comparative visual search, we introduce besides object density a new entropy-based measure for object heterogeneity. The effects of local density and entropy on several basic and derived eye-movement variables clearly rule out the traveling salesman strategy, but are most compatible with the clustering strategy.     

The Social Regulation of Classroom Performances: a Theoretical Outline

Based on 20 years of research on the social regulation of academic performances, this paper provides arguments for the idea that the social context in which cognitive functioning takes place is an integral part of that functioning, not just the surrounding context for it. Several studies in the classroom setting indeed reveal that student's cognitive performances can depend on interactions between their actual and past social experiences, most notably interpersonal comparison and evaluation episodes. Because of their recurrence, these episodes can become part of student's autobiographical memory and, therefore, can affect their actual behavior in specific conditions. Theoretical suggestions are made for a ‘social psychology of cognition.’ This revised version was published online in August 2006 with corrections to the Cover Date.     

Challenging the Universality of Job Resources: Why,When, and For Whom Are They Beneficial?

In this paper we introduce the topic of job resources and elaborate on their relevance for research and practice in work psychology. We start out with a brief overview of the historic and current understanding of job resources. Next, we discuss the need for a more nuanced perspective on the effects of job resources and present some ideas on how to move this forward. After these conceptual preliminaries, we introduce the papers in the special issue and conclude with a brief summary of the special issue's key messages.