‘Diverse Epistemologies’, Truth and Archaeology: In Defence of Realism

In a recent journal article, as well as in a recent book chapter, in which she critiques my position on ‘indigenous knowledge’, Lesley Green of the Department of Social Anthropology at the University of Cape Town argues that ‘diverse epistemologies ought to be evaluated not on their capacity to express a strict realism but on their ability to advance understanding’. In order to examine the implications of Green’s arguments, and of Nelson Goodman and Catherine Elgin’s work in this regard, I apply them to a well-known controversy between Native American (or First Nations) creationism and archaeology. I argue that issues in social justice should be distinguished from issues in epistemology. Moreover, in tightening in this paper the link between knowledge and truth, I attempt to defend science as a ‘privileged way of seeing the world’. The analysis of truth, and of related concepts like reality and ‘the way the world is’, will assume a central role here. I contend that, ultimately, the only coherent and consistent position is a realist view of the pertinent issues and ideas.     

Exploratory regression analysis: A tool for selecting models and determining predictor importance

Linear regression analysis is one of the most important tools in a researcher’s toolbox for creating and testing predictive models. Although linear regression analysis indicates how strongly a set of predictor variables, taken together, will predict a relevant criterion (i.e., the multiple R), the analysis cannot indicate which predictors are the most important. Although there is no definitive or unambiguous method for establishing predictor variable importance, there are several accepted methods. This article reviews those methods for establishing predictor importance and provides a program (in Excel) for implementing them (available for direct download at . The program investigates all 2 ^p – 1 submodels and produces several indices of predictor importance. This exploratory approach to linear regression, similar to other exploratory data analysis techniques, has the potential to yield both theoretical and practical benefits.     

Toward a new approach to the study of personality in culture

We review recent developments in the study of culture and personality measurement. Three approaches are described: an etic approach that focuses on establishing measurement equivalence in imported measures of personality, an emic (indigenous) approach that studies personality in specific cultures, and a combined emic-etic approach to personality. We propose the latter approach as a way of combining the methodological rigor of the etic approach and the cultural sensitivity of the emic approach. The combined approach is illustrated by two examples: the first with origins in Chinese culture and the second in South Africa. The article ends with a discussion of the theoretical and practical implications of the combined emic-etic approach for the study of culture and personality and for psychology as a science.     

Can I retake it? Exploring subgroup differences and criterion-related validity in promotion retesting

Despite recent interest in the practice of allowing job applicants to retest, surprisingly little is known about how retesting affects 2 of the most critical factors on which staffing procedures are evaluated: subgroup differences and criterion-related validity. We examined these important issues in a sample of internal candidates who completed a job-knowledge test for a within-job promotion. This was a useful context for these questions because we had job-performance data on all candidates (N = 403), regardless of whether they passed or failed the promotion test (i.e., there was no direct range restriction). We found that retest effects varied by subgroup, such that females and younger candidates improved more upon retesting than did males and older candidates. There also was some evidence that Black candidates did not improve as much as did candidates from other racial groups. In addition, among candidates who retested, their retest scores were somewhat better predictors of subsequent job performance than were their initial test scores (rs = .38 vs. .27). The overall results suggest that retesting does not negatively affect criterion-related validity and may even enhance it. Furthermore, retesting may reduce the likelihood of adverse impact against some subgroups (e.g., female candidates) but increase the likelihood of adverse impact against other subgroups (e.g., older candidates).     

The metacognitions of climate change

How do individuals think about global climate change? Although a body of research on the cognitive elements of climate change has begun to accumulate (e.g., Bord, O'Connor, & Fisher, 2000, few studies have distinguished between categories of cognitions. One key distinction is between primary, direct thoughts such as perceptions and evaluations, and secondary, indirect thoughts which reflect upon and control primary cognitions (Petty, Brinol, Tormala, & Wegner, 2007); secondary thoughts are thus considered metacognitive. This distinction is important to climate change engagement given that primary and secondary thoughts may exert independent effects on behavior. Three metacognitive elements of climate change are delineated: metacognitive knowledge, or assessments of confidence in one's thoughts; metacognitive certainty, or assessments of the likelihood of an outcome; and metacognitive importance, or the relative emphasis placed on one's thoughts. The relations between these dimensions and climate change-relevant behaviors are explored. Possibilities for future research are also discussed.     

The elephant in the room: collaboration and competition among relief organizations during high-profile disasters

The non-governmental organizations (NGOs) that assume the bulk of emergency care during large-scale disasters in the developing world must expend considerable time and resources to ensure donations to sustain their field operations. This long-standing dilemma for the humanitarian community can create a competitive environment that: Compromises the delivery and quality of services, Allows the effectiveness of operations to be compromised by a lack of cooperation and collaboration, Disrupts the timely and accurate coordination and analysis of outcome measures that are crucial to successful response in the future, and Undermines the long-term capacity of indigenous aid organizations. This article addresses problems and potential solutions for improved coordination and long-term capacity-building of humanitarian aid.     

Voluntary task switching under load: Contribution of top-down and bottom-up factors in goal-directed behavior

The present study investigated the relative contribution of bottom-up and top-down control to task selection in the voluntary task-switching (VTS) procedure. In order to manipulate the efficiency of top-down control, a concurrent working memory load was imposed during VTS. In three experiments, bottom-up factors, such as stimulus repetitions, repetition of irrelevant information, and stimulus-task associations, were introduced in order to investigate their influence on task selection. We observed that the tendency to repeat tasks was stronger under load, suggesting that top-down control counteracts the automatic tendency to repeat tasks. The results also indicated that task selection can be guided by several elements in the environment, but that only the influence of stimulus repetitions depends on the efficiency of top-down control. The theoretical implications of these findings are discussed within the interplay between top-down and bottom-up control that underlies the voluntary selection of tasks.     

Integrating cross-cultural psychology research methods into ethnic minority psychology

Multicultural psychology has 2 related but often disconnected streams, namely cross-cultural psychology and racial and ethnic minority psychology (Hall & Maramba, 2001). We propose that advances in both fields will be facilitated if there is greater cross-fertilization, especially in methodological approaches given that proponents in both fields are interested in studying and understanding the role and impact of culture on human behavior. To facilitate this cross-fertilization, we present 3 methodological approaches that would be of value in racial and ethnic minority psychology. First, we present an overview of the importance of and the approaches to evaluating and establishing measurement equivalence. Second, we discuss recent advances in the understanding of conceptual equivalence in light of indigenous approaches, cultural manipulation, and multilevel analysis. Third, we present a combined etic-emic approach to cross-cultural personality research as illustrated by the Cross-Cultural Personality Assessment Inventory developed by Fanny Cheung and her colleagues.     

Neurocognitive functioning of preschool children with uncomplicated epilepsy

Only few studies are available on the cognitive functioning of preschool children with uncomplicated epilepsy. The aim of this study was to describe the neurocognitive functioning of 3–6-year-old children with uncomplicated epilepsy. A subgroup of children with uncomplicated epilepsy from a population based cohort of preschool children with active epilepsy (N = 64) participated in the study. The neurocognitive functioning of these children (N = 13) was compared to that of matched healthy controls (N = 13). The Wechsler's Primary and Preschool Scale of Intelligence - Revised and the Developmental Neuropsychological Assessment were administered. The intellectual functioning of the children with uncomplicated epilepsy was within normal range, but differed significantly from that of healthy controls, which was contrary to expectations. Statistically significant differences emerged between the study and the control group in Verbal IQ and Full Scale IQ, but no differences were found in Performance IQ. The children with uncomplicated epilepsy also had minor neurocognitive difficulties in verbal short-term memory (p <.01) compared to healthy children. The result suggests that uncomplicated epilepsy in preschool children may interfere with language and verbal short-term memory functions. Further studies with detailed neuropsychological assessments and follow-up time are needed to gain more insight into the developmental course of children with uncomplicated epilepsy. Also, because of the developmental risks reported in this study, psychological screening and detailed neuropsychological assessment are recommended in clinical practice.     

自我损耗促进冒险行为

基于自我控制资源模型,本研究探讨了自我损耗对冒险行为的影响以及生理能量补充在其中的缓解作用。实验1和实验2分别通过“Stroop”和“非利手写作”任务操纵被试的自我损耗,两个实验均用气球模拟风险决策任务考察被试的冒险行为,并且通过摄入含有或不含有葡萄糖的柠檬水来操纵生理能量水平。结果发现,在排除无关变量后,高损耗者比低损耗者尽可能多地对气球进行充气以寻求奖赏(实验1和实验2),但饮用含葡萄糖的柠檬水能够有效降低这种反应(实验2)。该研究证实了自我损耗促进冒险行为,补充生理能量能有效缓解该效应。