Event-related potentials reveal the development of stable face representations from natural variability

Natural variability between instances of unfamiliar faces can make it difficult to reconcile two images as the same person. Yet for familiar faces, effortless recognition occurs even with considerable variability between images. To explore how stable face representations develop, we employed incidental learning in the form of a face sorting task. In each trial, multiple images of two facial identities were sorted into two corresponding piles. Following the sort, participants showed evidence of having learnt the faces performing more accurately on a matching task with seen than with unseen identities. Furthermore, ventral temporal event-related potentials were more negative in the N250 time range for previously seen than for previously unseen identities. These effects appear to demonstrate some degree of abstraction, rather than simple picture learning, as the neurophysiological and behavioural effects were observed with novel images of the previously seen identities. The results provide evidence of the development of facial representations, allowing a window onto natural mechanisms of face learning.     

Distorted body representations are robust to differences in experimental instructions

Several recent reports have shown that even healthy adults maintain highly distorted representations of the size and shape of their body. These distortions have been shown to be highly consistent across different study designs and dependent measures. However, previous studies have found that visual judgments of size can be modulated by the experimental instructions used, for example, by asking for judgments of the participant’s subjective experience of stimulus size (i.e., apparent instructions) versus judgments of actual stimulus properties (i.e., objective instructions). Previous studies investigating internal body representations have relied exclusively on ‘apparent’ instructions. Here, we investigated whether apparent versus objective instructions modulate findings of distorted body representations underlying position sense (Exp. 1), tactile distance perception (Exp. 2), as well as the conscious body image (Exp. 3). Our results replicate the characteristic distortions previously reported for each of these tasks and further show that these distortions are not affected by instruction type (i.e., apparent vs. objective). These results show that the distortions measured with these paradigms are robust to differences in instructions and do not reflect a dissociation between perception and belief.     

Extending Research on a Computer-Based Sight-Word Reading Intervention to a Student with Autism

A multiple-baseline design across tasks (i.e., word lists) was used to evaluate the effects of a computer-based sight-word reading intervention (CBSWRI) on the sight-word reading of a sixth-grade student with Autism. Across 3 lists of primer and first-grade Dolch words, the student showed immediate increases in sight-word reading after the CBSWRI was applied. As the student learned 25 words in 16 brief (i.e., 200 s) sessions, the efficiency and sustainability of the CBSWRI are discussed along with future research.     

Deletion of the GluA1 AMPA receptor subunit impairs recency-dependent object recognition memory

Deletion of the GluA1 AMPA receptor subunit impairs short-term spatial recognition memory. It has been suggested that short-term recognition depends upon memory caused by the recent presentation of a stimulus that is independent of contextual-retrieval processes. The aim of the present set of experiments was to test whether the role of GluA1 extends to nonspatial recognition memory. Wild-type and GluA1 knockout mice were tested on the standard object recognition task and a context-independent recognition task that required recency-dependent memory. In a first set of experiments it was found that GluA1 deletion failed to impair performance on either of the object recognition or recency-dependent tasks. However, GluA1 knockout mice displayed increased levels of exploration of the objects in both the sample and test phases compared to controls. In contrast, when the time that GluA1 knockout mice spent exploring the objects was yoked to control mice during the sample phase, it was found that GluA1 deletion now impaired performance on both the object recognition and the recency-dependent tasks. GluA1 deletion failed to impair performance on a context-dependent recognition task regardless of whether object exposure in knockout mice was yoked to controls or not. These results demonstrate that GluA1 is necessary for nonspatial as well as spatial recognition memory and plays an important role in recency-dependent memory processes.     

Training Employment Acquisition Skills for Adolescents with a Substance Abuse History

Obtaining paid employment is beneficial for youth during and following treatment for substance abuse. A training program for acquiring employment was implemented at a residential drug and alcohol rehabilitation facility for nine residents who were near to completing the program. Data are presented from three residents with the most complete data sets. Skills training was provided for completing biographic information on job application forms, job searching by telephone and in person, and job interviews. The training process included behavioral procedures of providing instructions, modeling, role‐play, and feedback. Improvements were demonstrated across all behaviors and participants after the training and generalized to real community materials and settings. All participants who remained in treatment also gained real work experience opportunities or regular paid employment. Copyright © 2011 John Wiley & Sons, Ltd.     

The professionalization of psychology within the apartheid state 1948-1978

When the National Party came to power in South Africa in 1948 it inherited an ageing colonial psychiatric system underpinned by British-based mental health legislation promulgated in 1916. This situation remained substantially unchanged until the late 1960s, despite the apartheid government's far-reaching attempts to restructure other aspects of the social landscape. The 1966 assassination of South Africa's prime minister by a schizophrenic parliamentary messenger led directly to a series of commissions of enquiry into the management of mental health services, followed by new mental health legislation in 1973 and the compulsory registration of clinical psychologists. The increasing professionalization of psychology, and the apartheid state's policy in relation to the profession, are considered in the light of local and international influences. Unlike the Nazi and Soviet governments, the apartheid state did not seek to create a new psychology and psychiatry in its own image but was instead motivated by a desire to emulate Western models and to identify and control the dangerous individual.     

The Future of Social‐Health Psychology: Prospects and Predictions

Social‐health psychology has made substantial contributions to health psychology and is poised to make many more in the future. Some new developments will come from empirical progress in theoretical and empirical social psychology that can elucidate the psychological mechanisms whereby social variables affect health. Others will come from technological advances, such as functional magnetic resonance imaging, that will uncover mechanisms that underlie effects of stress, coping, persuasive communications, and other factors on health. Progress will also come from social psychologists’ increasing comfort with biological processes and measures, including genetics and neuroendocrine mechanisms. As such, social‐health psychology will not only continue to enrich both health psychology and social psychology, but increasingly be able to speak to intervention possibilities. Moreover, by virtue of its emphasis on psychobiological mechanisms, social‐health psychology leads the way for an expanding role of social psychology in the integrative science of the future.     

Effects of motor intention on the perception of somatosensory events: a behavioural and functional magnetic resonance imaging study

The intention to execute a movement can modulate our perception of sensory events, and this modulation is observed ahead of both ocular and upper limb movements. However, theoretical accounts of these effects, and also the empirical data, are often contradictory. Accounts of "active touch", and the premotor theory of attention, have emphasized how movement intention leads to enhanced perceptual processing at the target of a movement, or on the to-be-moved effector. By contrast, recent theories of motor control emphasize how internal "forward" model (FM) estimates may be used to cancel or attenuate sensory signals that arise as a result of self-generated movements. We used behavioural and functional brain imaging (functional magnetic resonance imaging, fMRI) to investigate how perception of a somatosensory stimulus differed according to whether it was delivered to a hand that was about to execute a reaching movement or the alternative, nonmoving, hand. The results of our study demonstrate that a somatosensory stimulus delivered to a hand that is being prepared for movement is perceived to have occurred later than when that same stimulus is delivered to a nonmoving hand. This result indicates that it takes longer for a tactile stimulus to be detected when it is delivered to a moving limb and may correspond to a change in perceptual threshold. Our behavioural results are paralleled by the results of our fMRI study that demonstrated that there were significantly reduced blood-oxygen-level-dependent (BOLD) responses within the parietal operculum and insula following somatosensory stimulation of the hand being prepared for movement, compared to when an identical stimulus was delivered to a nonmoving hand. These findings are consistent with the prediction of FM accounts of motor control that postulate that central sensory suppression of somatosensation accompanies self-generated limb movements, and with previous reports indicating that effects of sensory suppression are observed in higher order somatosensory regions.     

Change in maternal criticism and behavior problems in adolescents and adults with autism across a 7-year period

In a previous study, high levels of maternal criticism predicted increased behavior problems in adolescents and adults with autism spectrum disorders (ASD) over an 18-month period (Greenberg, Seltzer, Hong, & Orsmond, 2006). The current investigation followed these families over a period of 7 years to examine the longitudinal course of criticism and behavior problems, to assess the association between their trajectories, and to determine the degree to which change in each of these factors predicted levels of criticism and behavior problems at the end of the study period. A sample of 118 mothers coresiding with their adolescent and adult children with ASD provided open-ended narratives about their children and reported on the children's behavior problems at 4 waves. Maternal criticism was derived from expressed emotion ratings of the narratives. Criticism exhibited low but significant stability over the 7-year period, and behavior problems exhibited high stability. Through latent growth curve modeling, (a) criticism was found to have increased over time, but only for the group of families in which the sons or daughters transitioned from high school services during the study period; (b) individual changes in criticism and behavior problems were positively correlated over the 7-year period; and (c) changes in criticism predicted levels of behavior problems at the conclusion of the study. Changes in behavior problems were not predictive of end levels of criticism. Implications for intervention and prevention efforts are discussed.     

Is gossip power? The inverse relationships between gossip,power, and likability

Despite widespread conjecture regarding the functions and consequences of gossip, little empirical attention has investigated how gossipers are perceived by others. In the present study, 128 individuals were asked to think about a person who either frequently or rarely discussed others while not in their presence. Gender of the target and valence of the gossip were also manipulated. High‐frequency gossipers were perceived as less powerful and were liked less than low‐frequency gossipers, and those who gossiped negatively were liked less than those who gossiped positively. High‐frequency negative gossipers emerged as the least powerful and least likable targets. These results are discussed in relation to the transfer of attitudes recursively effect. Copyright © 2011 John Wiley & Sons, Ltd.