Crowd Effects in Unfamiliar Face Matching

Psychological research shows that humans can not reliably match unfamiliar faces. This presents a practical problem, because identity verification processes in a variety of occupational settings depend on people to perform these tasks reliably. In this context, it is surprising that very few studies have attempted to improve human performance. Here, we investigate whether distributing face matching tasks across groups of individuals might help to solve this problem. Across four studies, we measure the accuracy of the ‘crowd’ on a standard test of face matching ability and find that aggregating individual responses produces substantial gains in matching accuracy. We discuss the practical implications of this result and also suggest ways in which this approach might be used to improve our understanding of face perception more generally. Copyright © 2013 John Wiley & Sons, Ltd.     

Implicit self- and other-associations in obsessive-compulsive personality disorder traits

This study investigated automatic associations with the self and with others in the context of obsessive-compulsive personality disorder (OCPD). Participants scoring high (n=20) or low (n=20) on DSM-IV OCPD traits performed three irrelevant-feature tasks in which language of the words (Dutch vs. English) was the relevant stimulus feature and word content (OCPD self-view, OCPD other-view, high self-esteem and low self-esteem) the irrelevant feature. Results showed that the high and low OCPD group differed with respect to both explicit and implicit OCPD cognitions. Typically, high OCPD participants showed better performance on OCPD-congruent trials than on OCPD-incongruent trials, whereas low OCPD participants displayed the opposite pattern. This was evident from a semantic Simon effect and from a semantic priming effect. Correlations between direct and indirect measures of OCPD beliefs and of self-esteem were low. Moreover, the indirect OCPD measures contributed uniquely and independently of explicit beliefs to the prediction of OCPD.     

How do socially anxious women evaluate mimicry? A virtual reality study

Being subtly mimicked leads to more positive evaluations of the mimicker. Socially anxious individuals (SAs), however, should respond differently. SAs would probably either not process mimicry due to self-focused attention or not appreciate such social behaviour. Consequently, we hypothesised that they would not think more positively about a mimicking person. To test this prediction, 25 SAs and 25 non-anxious controls (NACs), all female, interacted with two virtual men (avatars) separately. One avatar mimicked the participant's head movements while giving an opinionated speech, whereas the other did not mimic. Afterwards, participants evaluated the speeches and the avatars. As predicted, NACs evaluated the mimicking avatar and his speech more positively than the non-mimicking avatar. SAs, on the other hand, evaluated both avatars and their speeches the same; comparable to how NACs evaluated the non-mimicking avatar. These results conform to the notion that mimicking does not have positive effects on SAs.     

Bodies and other visual objects: the dialectics of reaching toward objects

Participants viewed video clips of a left or right-handed reach toward an object that was orientated with a handle to the left or right. They were required to classify the object by making a left or right-handed key-press and ignore the reach. These responses were, never-the-less, affected by the observed reach in ways which largely reflected the opportunities for complementary actions in the viewed scenes, given the simultaneous constraints of the object orientation combined with the direction and hand of reach. These influences are claimed to reflect the interdependency of the action possibilities that arise from a set of objects and agents in three-dimensional space that together determine behaviour.     

The Theory of Male Reference Group Identity Dependence: Roles of Social Desirability, Masculinity Ideology, and Collective Identity

Data from 118 college men from the southeastern United States (U.S.) were analyzed using zero-order and partial correlations to test male reference group identity dependence theory’s propositions regarding the relations of male reference group identity attitudes (i.e., no reference group, reference group dependent, reference group nondependent similarity, and reference group nondependent diversity) with traditional masculinity ideology and dimensions of men’s gender-based collective identity (i.e., affirmative evaluation of collective identity, importance of collective identity). Male reference group identity attitudes yielded theoretically-consistent relations with the affirmative evaluation and importance of collective identity. Specifically, the no reference group attitudes were correlated negatively whereas nondependent diversity attitudes were correlated positively with affirmative evaluation; the group dependent attitudes were correlated positively with importance of collective identity; and the nondependent similarity attitudes were correlated positively with both affirmative evaluation of collective identity and the importance of collective identity. This pattern reveals the differential salience of collective identity dimensions in male reference group identity attitudes, suggesting that group dependent attitudes reflect importance of collective identity without an evaluation valence, nondependent diversity attitudes reflect affirmative evaluation whereas the no reference group attitudes reflect nonaffirmative evaluation of collective identity, and nondependent similarity attitudes involve both affirmative evaluation and importance of collective identity. Additional findings added to prior data suggesting reevaluation of the posited role of traditional masculinity ideology in male reference group identity theory. The pattern of findings was not changed by controlling for self-deceptive enhancement and impression management dimensions of social desirability.     

Direct and indirect measures of spider fear predict unique variance in children's fear-related behaviour

This study investigated whether direct and indirect measures predict unique variance components of fearful behaviour in children. One hundred eighty-nine children aged between 9 and 12 performed a pictorial version of the emotional Stroop task (EST), filled out the Spider Anxiety and Disgust Screening for Children (SADS-C), the Spider Phobia Questionnaire for Children (SPQ-C), and took part in a Behavioural Assessment Test (BAT). The EST did not correlate with self-reports. Correlations of the self-reports and the BAT remained significant after partialling out EST performance. Likewise, the EST and the BAT still correlated significantly with each other when controlling for the self-reports. This indicates that both direct and indirect measures are useful for predicting unique variance components of fearful behaviour in children. Moreover, it may explain why some previous studies have not found a relationship between self-reported fear and EST performance.     

Effect of age on dual-task performance in children and adults

Age effects on dual-task costs were examined in healthy adults (Exp. 1) and in typically developing children (Exp. 2). In both experiments, individual differences in performance on the single-task components were titrated so that any age differences in dual-task costs could not be attributed to differences in single-task performance. Dual-task costs were found, but there were no age-related differences in these costs in older relative to younger adults, in 7-year-old relative to 9-year-old children, or across all four age groups. The results from these experiments suggest that previously reported age differences in dual-task costs, in both healthy ageing and child development, may be due to a failure to adequately equate single-task difficulty.     

Retraining automatic action tendencies changes alcoholic patients' approach bias for alcohol and improves treatment outcome

This study tested the effects of a new cognitive-bias modification (CBM) intervention that targeted an approach bias for alcohol in 214 alcoholic inpatients. Patients were assigned to one of two experimental conditions, in which they were explicitly or implicitly trained to make avoidance movements (pushing a joystick) in response to alcohol pictures, or to one of two control conditions, in which they received no training or sham training. Four brief sessions of experimental CBM preceded regular inpatient treatment. In the experimental conditions only, patients' approach bias changed into an avoidance bias for alcohol. This effect generalized to untrained pictures in the task used in the CBM and to an Implicit Association Test, in which alcohol and soft-drink words were categorized with approach and avoidance words. Patients in the experimental conditions showed better treatment outcomes a year later. These findings indicate that a short intervention can change alcoholics' automatic approach bias for alcohol and may improve treatment outcome.