Implicit Attitudes Toward Arab-Muslims and the Moderating Effects of Social Information

Three studies examined the relative valence and strength of implicit attitudes toward Arab-Muslims using the Implicit Association Test (IAT) while exploring the moderation of such implicit effects. Studies have suggested that repeated exposure to information associating members of a social group (e.g., Arab-Muslims) with evaluative attributes (e.g., terrorism) might create automatic attitudes toward them. Consistent with this notion, the IAT results indicated strong implicit preference for White over Arab-Muslim, whereas the magnitude of such a bias was substantially diminished when assessed by explicit measures (Study 1). It is also interesting to note that participants exhibited implicit preference for Black over Arab-Muslim when measured by the IAT, whereas no difference was found between the 2 groups in stimulus familiarity and in explicit attitudes (Studies 2 and 3). However, such implicit effects were moderated when participants were exposed to positive information about Arab-Muslims (Study 3). Theoretical and practical implications of these findings are further discussed.     

A Factor Analysis of Six Commonly Used Instruments Associated With Suicide Using College Students

Determined whether six commonly used inventories which are associated with suicide (Hopelessness Scale, Zung Self-Rating Depression Scale, Scale for Suicide Ideation, Reasons for Living Inventory, Suicide Probability Scale, and the Suicide Ideation Questionnaire) overlap; all six were given to 308 undergraduates. A principal components factor analysis yielded four factors with Eigenvalues greater than 1.00. These four factors were labeled Suicidal/Negative Ideas, Reasons for Living, Self-Doubt, and Suicide Desire. Each scale or subscale had a factor loading of .4 or greater on one factor. Only the Survival and Coping Beliefs subscale of the Reasons for Living Inventory and the Suicide Ideation Questionnaire loaded on two factors. Thus, each of these six instruments accounts for unique variance in suicidality. A suicide screening battery that includes all six inventories would take approximately 20 min for college students to complete, and would be valuable in identifying different aspects of suicidality.     

Occupational stereotypes: activation of male bias in a gender‐neutral world

The goal of the present study was to determine whether gender‐neutral language, used to replace male‐biased language, carries an implicit male bias. Participants read passages in which a target occupation was introduced using either male‐biased or gender‐neutral nouns. A target sentence followed defining the gender of the occupational character. In Experiment 1, participants read target sentences defining the character as a woman more slowly following passages that contained male‐biased nouns and gender‐neutral nouns. In Experiment 2, an additional sentence was added that defined the occupational character as a woman. This information eliminated the reading disruption in Experiment 1 demonstrating that gender‐neutral language can moderate against activation of gender stereotypes when combined with an explicit mention that the occupational character is female.     

Subspace K-means clustering

To achieve an insightful clustering of multivariate data, we propose subspace K-means. Its central idea is to model the centroids and cluster residuals in reduced spaces, which allows for dealing with a wide range of cluster types and yields rich interpretations of the clusters. We review the existing related clustering methods, including deterministic, stochastic, and unsupervised learning approaches. To evaluate subspace K-means, we performed a comparative simulation study, in which we manipulated the overlap of subspaces, the between-cluster variance, and the error variance. The study shows that the subspace K-means algorithm is sensitive to local minima but that the problem can be reasonably dealt with by using partitions of various cluster procedures as a starting point for the algorithm. Subspace K-means performs very well in recovering the true clustering across all conditions considered and appears to be superior to its competitor methods: K-means, reduced K-means, factorial K-means, mixtures of factor analyzers (MFA), and MCLUST. The best competitor method, MFA, showed a performance similar to that of subspace K-means in easy conditions but deteriorated in more difficult ones. Using data from a study on parental behavior, we show that subspace K-means analysis provides a rich insight into the cluster characteristics, in terms of both the relative positions of the clusters (via the centroids) and the shape of the clusters (via the within-cluster residuals).     

Task-relevant perceptual features can define categories in visual memory too

Although Konkle, Brady, Alvarez, and Oliva (2010, Journal of Experimental Psychology: General, 139(3), 558) claim that visual long-term memory (VLTM) is organized on underlying conceptual, not perceptual, information, visual memory results from visual search tasks are not well explained by this theory. We hypothesized that when viewing an object, any task-relevant visual information is critical to the organizational structure of VLTM. In two experiments, we examined the organization of VLTM by measuring the amount of retroactive interference created by objects possessing different combinations of task-relevant features. Based on task instructions, only the conceptual category was task relevant or both the conceptual category and a perceptual object feature were task relevant. Findings indicated that when made task relevant, perceptual object feature information, along with conceptual category information, could affect memory organization for objects in VLTM. However, when perceptual object feature information was task irrelevant, it did not contribute to memory organization; instead, memory defaulted to being organized around conceptual category information. These findings support the theory that a task-defined organizational structure is created in VLTM based on the relevance of particular object features and information.     

Source credibility and the processing of refutation texts

The knowledge revision components framework (KReC) outlines the basic comprehension processes and text factors that can be accentuated to increase the potential for knowledge revision during reading. The goal of the present study was to explore source credibility as one such text factor. In Experiment 1, we established the utility of a set of refutation texts in influencing knowledge revision. Participants read ten refutation and ten control texts. The participants had faster reading times and higher posttest scores for the refutation than for the control texts, providing evidence for knowledge revision. In Experiment 2, we examined the influence of source credibility under normal reading conditions. Participants read 20 refutation texts, ten with high-credibility and ten with low-credibility sources. The reading times and posttest scores suggested that knowledge revision unfolded successfully, independent of credibility. Using the same texts, in Experiment 3 we examined the influence of direct instructions that made the credibility of the source of information more salient. When the credibility of the source was made salient, the revision process was disrupted in the low-credibility condition, as evidenced by slower reading times and lower posttest scores than in the high-credibility condition. The results add to our understanding of the factors that constrain knowledge revision during the reading of refutation texts, and are discussed in the context of the extant literature and KReC.     

Frontal cortex functioning in the infant broader autism phenotype

Atypical attention has been proposed as a marker of the broader autism phenotype. In the present study we investigated this and the related process of inhibitory control at the youngest possible age through the study of infant siblings of children with an autism spectrum disorder (Sibs-ASD). Both attention and inhibition have been related to the frontal cortex of the brain. Nine- to ten-month-old Sibs-ASD and low-risk control infants completed the Freeze-Frame task, in which infants are encouraged to inhibit looks to peripherally presented distractors whilst looking at a central animation. The attractiveness of the central stimulus is varied in order to investigate the selectivity of infants’ responses. In line with previous studies, it was found that a subset of Sibs-ASD infants had difficulty disengaging attention from a central stimulus in order to orient to a peripheral stimulus. The Sibs-ASD group also showed less Selective Inhibition than controls. However, Sibs-ASD infants did demonstrate Selective Inhibitory Learning. These results provide preliminary evidence for atypical frontal cortex functioning in the infant broader autism phenotype.     

Using the 4/5ths Rule as an Outcome in Regression Analyses: A Demonstrative Simulation

The adverse impact associated with personnel practices is an important issue for personnel psychologists. The purpose of this simulation study is to demonstrate the consequences of using the 4/5ths rule and the adverse impact ratio in analyses designed to predict adverse impact from human resource management (HRM) strategies. Results show that increasing (1) the total number of selections made and (2) the minority representation in the candidate pool may influence adverse impact differently depending on how adverse impact is measured. Specifically, using the 4/5ths rule as an outcome in logistic regression analyses led to unexpected findings regarding the effectiveness of HRM strategies designed to reduce adverse impact. On the other hand, using the adverse impact ratio as an outcome in linear regression analyses produced to intuitive findings.     

Bewältigung des unerfüllten Kinderwunsches

The article reviews current research in relation to two aspects of involuntary childlessness; firstly, the extent to which involuntary childlessness can be considered a critical life-event and secondly, the short-term effects of childlessness on life-satisfaction and well-being. A study is reported in which 68 middle-aged women (45 to 65 years) who are long term childless because of infertility, are investigated. The study focuses on the extent to which unfilled desire for a child has long term effects on well-being and life-satisfaction. The control group comprised 68 women who did not suffer from fertility problems and became pregnant spontaneously. Life-satisfaction and well-being were assessed using the life-satisfaction questionaire (FLZ; Fahrenberg et al. 2000) and the SCL-90-R (Symptome-Checklist, Derogatis, the German version of Franke 1995). The study shows clearly that psychological well-being is significantly lower in childless middle-aged women compared to women of the same mean age, who have a child. No significant differences were found in social well-being and health. The results support the view that unwanted childlessness may become a chronic stressor. Unintentionally childless middle-aged women do not constitute a clinical group whose need for psychotherapy is urgent. However, the development of specific counselling for women who fail to conceive and those who remain childless in the long term is recommended.     

Paired-Associate Learning in Attention-Deficit/Hyperactivity Disorder as a Function of Hyperactivity-Impulsivity and Oppositional Defiant Disorder

A paired-associate learning (PAL) test was administered to 22 community volunteers without disruptive disorders and 197 children (7.5–13.5 years-old) presenting with the inattentive and combined subtypes of attention-deficit/hyperactivity disorder (ADHD) either in combination with or without oppositional defiant disorder (ODD). Participants were screened for learning disorders. In comparison to non-ADHD participants, children with ADHD achieved worse PAL and made errors rated as more acoustically and less semantically similar to the correct paired associates. These deficits were not related to hyperactivity–impulsivity or comorbid ODD. These results suggest that ADHD children are less competent at PAL and use less efficient learning strategies than their non-ADHD peers.