Perceptual asymmetries are preserved in memory for highly familiar faces of self and friend

We investigated the effect of familiarity on people's perception of facial likeness by asking participants to choose which of two mirror-symmetric chimeric images (made from the left or right half of a photograph of a face) looked more like an original image. In separate trials the participants made this judgment for their own face and for the face of a close friend; half of them matched to a true image of the original and half matched to a mirror image of the original. In the case of matching to a friend's face presented in the familiar orientation, over 80% of participants chose the left-left composite to be a better likeness to the original, whereas only 62% showed the same left-side bias when matching to a mirror image. The difference is significant, and the result contrasts markedly with a second experiment where participants who were unfamiliar with the faces showed comparable left-side biases when matching to true or mirror reversed images. The result suggests that perceptual asymmetries are retained in our long-term memory for highly familiar faces. While matching to images of self also showed an effect of familiarity, the data in this condition show less evidence of perceptual asymmetry and are discussed in relation to recent research on the representation of one's own face.     

Prediction of Boston Naming Test performance from vocabulary scores: preliminary guidelines for interpretation.

Patients with limited education or underdeveloped vocabulary skills may perform below the normal range on the Boston Naming Test when compared to the original published norms, even in the absence of brain damage. To reduce the frequency of false positive dysnomic classifications of patients with limited vocabulary skills, we developed a score adjustment to account for the significant shared variance between scores on this test and the WAIS-R Vocabulary subtest. Vocabulary significantly predicted performance on the Boston Naming Test (r = .65, p < .0001) in a sample of 62 outpatients who had no objective evidence of brain damage. Linear regression was used to derive expected performance on the Boston Naming Test from Vocabulary scaled scores. Relative to the original published norms, scores based on the Vocabulary subtest cut-offs produced fewer false positives and more accurately classified group membership for patients with and without objectively verified brain damage. These performance predictions are offered as tentative guidelines to assist clinicians in evaluating the presence of naming deficits by controlling for the variance associated with knowledge of vocabulary.     

A closer look at the size of the gaze-liking effect: a preregistered replication

This study is a direct replication of gaze-liking effect using the same design, stimuli and procedure. The gaze-liking effect describes the tendency for people to rate objects as more likeable when they have recently seen a person repeatedly gaze toward rather than away from the object. However, as subsequent studies show considerable variability in the size of this effect, we sampled a larger number of participants (N?=?98) than the original study (N?=?24) to gain a more precise estimate of the gaze-liking effect size. Our results indicate a much smaller standardised effect size (d_z?=?0.02) than that of the original study (d_z?=?0.94). Our smaller effect size was not due to general insensitivity to eye-gaze effects because the same sample showed a clear (d_z?=?1.09) gaze-cuing effect – faster reaction times when eyes looked toward vs away from target objects. We discuss the implications of our findings for future studies wishing to study the gaze-liking effect.     

The EEG as confirmatory evidence of brain death: Previous and current approaches

The role of EEG in confirming the clinical diagnosis of isolated brain death has undergone evolutionary changes since the original recommendations concerning its use. Accumulated evidence now supports that approach that the EEG can be used not only as a confirmatory test for brain death, but one which considerably facilitates making the diagnosis. Using the EEG, brain death can often be identified with absolute certainty within just a few, rather than the previously recommended 24 or more hours after a known precipitating event. Guidelines to this effect have now been established.     

Construal level moderates a local dominance effect of appearance comparisons in undergraduate women

Body image concerns are pervasive within university environments. In this study, we suggest that high rates of body image concerns among undergraduate women may be due, in part, to a local dominance effect of appearance comparisons. That is, undergraduate women may increasingly make upward social comparisons with a predominantly thin and fit student population, rather than downward or lateral social comparisons with the size-diverse global population. The present research tested for and found evidence of this local dominance effect in Study 1 (N = 50), and tested a construal level manipulation as a moderating factor in Study 2 (N = 421). Results suggest that a concrete mindset leads to a local dominance effect, such that self-evaluations are influenced more by local comparisons than global; however, an abstract mindset appeared to mitigate the harmful effects of appearance comparisons. This research provides preliminary evidence that construal manipulations may serve as an intervention strategy to include in body image interventions in university settings.     

Comparison of neural activity that leads to true memories,false memories,and forgetting: An fMRI study of the misinformation effect

False memories can occur when people are exposed to misinformation about a past event. Of interest here are the neural mechanisms of this type of memory failure. In the present study, participants viewed photographic vignettes of common activities during an original event phase (OEP), while we monitored their brain activity using fMRI. Later, in a misinformation phase, participants viewed sentences describing the studied photographs, some of which contained information conflicting with that depicted in the photographs. One day later, participants returned for a surprise item memory recognition test for the content of the photographs. Results showed reliable creation of false memories, in that participants reported information that had been presented in the verbal misinformation but not in the photographs. Several regions were more active during the OEP for later accurate memory than for forgetting, but they were also more active for later false memories, indicating that false memories in this paradigm are not simply caused by failure to encode the original event. There was greater activation in the ventral visual stream for subsequent true memories than for subsequent false memories, however, suggesting that differences in encoding may contribute to later susceptibility to misinformation.     

Effects of Image Preprocessing on Face Matching and Recognition in Human Observers

In person identification, recognition failure due to variations of illumination is common. In this study, we employed image‐processing techniques to tackle this problem. Participants performed recognition and matching tasks where the face stimuli were either original images or computer‐processed images in which shading was weakened via a number of image‐processing techniques. The results show that whereas recognition accuracy in a memory task was unaffected, some of the techniques significantly improved the identification performance in a face‐matching task. We conclude that relative to long‐term face memory, face matching is more susceptible to discrepancy of shading in different images of a face. Reducing the discrepancy by certain preprocessing techniques can facilitate person identification when original face images contain large illumination differences. Copyright © 2013 John Wiley & Sons, Ltd.     

Brain potentials associated with recollective processing of spoken words

The neurocognitive foundations of recollection can be explored by recording event-related potentials (ERPs) from the human brain. In the present study, we monitored brain activity while participants heard a series of words, first in a study phase and again, 1-2 min later, in a test phase, when both priming and recognition were measured. Level of processing at study was manipulated within-subjects via instructions either to visualize the referent of each word (the image task) or to detect the presence of target letters (the letter task). Priming of lexical decision response time was observed but did not differ across study task, whereas recognition was better for image- than for letter-task words. Brain potentials recorded at test revealed a task effect, wherein ERPs were more positive for image- than for letter-task words approximately 600-900 msec after word onset. The task effect was restricted to posterior scalp locations and was interpreted as an indication of visual imagery triggered by spoken words. Given that similar potentials were also elicited at study, we speculate that accurate recognition of words from the image task involved the recapitulation of the visual imagery that was initially engaged during the study phase.     

The Role of the Face and Body in Unfamiliar Person Identification

Information useful for identifying a person can be found both in the face and body. Previous studies indicate that when an entire person is visible, we rely strongly on the face for identification, even if the body can be useful. We measured the utility of the face versus body for identification, by using images of unfamiliar people that varied in the quality of identity information in the face. Face quality was varied using similarity scores generated by state‐of‐the‐art face recognition algorithms from an international competition. These algorithms estimated the similarity of faces in a large set (>1 000 000) of image pairs that showed ‘people’, including the face and the top half of the body. By using these similarity scores, image pairs were stratified into three groups representing good, moderate, and poor performance for the face recognition algorithm. Participants matched identity in image pairs sampled from the three groups, by using versions of the stimuli edited digitally to show only the face or body. Consistent with the algorithm stratifications, performance with the face declined across the three conditions. The face supported more accurate identification than the body in the good and moderate conditions. In the poor condition, performance from the face and body was comparable. Using data from a previous study, we compared the face‐only and body‐only identity judgments with judgments based on the original image. The original unedited image supported the best overall performance in the good and moderate conditions. Notably, performance in the poor condition was equivalent for the face, body, and original images. The results indicate that in poor viewing conditions, identification decisions from the body may be as accurate as those made from the face or the entire person. Copyright © 2013 John Wiley & Sons, Ltd.     

Attention, emotion, and deactivation of default activity in inferior medial prefrontal cortex

Attention deactivates the inferior medial prefrontal cortex (IMPC), but it is uncertain if emotions can attenuate this deactivation. To test the extent to which common emotions interfere with attention, we measured changes of a blood flow index of brain activity in key areas of the IMPC with positron emission tomography (PET) of labeled water (H(15)2O) uptake in brain of 14 healthy subjects. The subjects performed either a less demanding or a more demanding task of attention while they watched neutral and emotive images of people in realistic indoor or outdoor situations. In the less demanding task, subjects used the index finger to press any key when a new image appeared. In the more demanding task, subjects chose the index or middle finger to press separate keys for outdoor and indoor scenes. Compared to the less demanding task, in a global search of all gray matter, the more demanding significantly lowered blood flow (rCBF) in left IMPC, left and right insula, and right amygdala, and significantly raised blood flow in motor cortex and right precuneus. Restricted searches of rCBF changes by emotion, at coordinates of significant effect in previous studies of the medial prefrontal and temporal cortices, revealed significant activation in the fusiform gyrus, independently of the task. In contrast, we found no effect of emotional content in the IMPC, where emotions failed to override the effect of the task. The results are consistent with a role of the IMPC in the selection among competitive inputs from multiple brain regions, as predicted by the theory of a default mode of brain function. The absent emotional interference with the deactivation of the default state suggests that the inferior prefrontal cortex continued to serve the attention rather than submit to the distraction.     

The long‐term effects of institutional rearing,foster care intervention and disruptions in care on brain electrical activity in adolescence

Exposure to early psychosocial deprivation as a result of institutional care disrupts typical brain development. The Bucharest Early Intervention Project (BEIP) is the first longitudinal study to investigate the neurodevelopment of institutionalized infants randomized to a foster care (FCG) intervention versus care as usual (CAUG). Here, we present findings from a follow‐up assessment of brain electrical activity as indexed by resting EEG at age 16 years. In addition, we examined the effects of disruption of foster care placement (e.g. the number of moves among foster care placements) on brain electrical activity. Resting‐state EEG was collected from 48 CAUG, 46 FCG and 48 never institutionalized (NIG) control participants. Absolute (µV²) and relative (proportion) power were computed from eyes closed, resting EEG data for theta, alpha and beta frequency bands. The CAUG displayed higher relative theta and lower relative alpha power compared to the FCG at 16 years of age. The FCG showed brain activity comparable to the NIG. The results further showed that disruptions following the original foster care placement had an adverse effect on brain electrical activity. Within the foster care group, there were no effects of age of placement on EEG power. Placement of children who have experienced early institutional rearing into stable foster care settings ensure long‐term improvement in brain functioning.     

Neurophysiological evidence that perceptions of fluency produce mere exposure effects

Recent exposure to people or objects increases liking ratings, the “mere exposure effect” (Zajonc in American Psychologist, 35, 117–123, 1968), and an increase in processing fluency has been identified as a potential mechanism for producing this effect. This fluency hypothesis was directly tested by altering the trial-by-trial image clarity (i.e., fluency) while Event-Related Potentials (ERPs) were recorded. In Experiment 1, clarity was altered across two trial blocks that each had homogenous trial-by-trial clarity, whereas clarity varied randomly across trials in Experiment 2. Blocking or randomizing image clarity across trials was expected to produce different levels of relative fluency and alter mere exposure effects. The mere exposure effect (i.e., old products liked more than new products) was observed when stimulus clarity remained constant across trials, and clear image ERPs were more positive than blurry image ERPs. Importantly, these patterns were reversed when clarity varied randomly across test trials, such that participants liked clear images more than blurry (i.e., no mere exposure effect) and clear image ERPs were more negative than blurry image ERPs. The findings provide direct experimental support from both behavioral and electrophysiological measures that, in some contexts, mere exposure is the product of top-down interpretations of fluency.     

The Fraser illusion: complex figures

The cause of the Fraser illusion, which occurs when a line made up of tilted segments itself appears tilted, is examined further. In this series of experiments, we used figures that resembled the original Fraser illusion; they were more complex than those reported on in our previous paper (Stuart & Day, 1988). The figures were used to explore two theories of the Fraser illusion further: that it is the result of interactions between orientation selective units, and that it is a consequence of the local, distributed processing of orientation. The presence of background elements like those used in the original illusion led to an increase in the strength of the illusion, but the shape of these elements had no differential effect on illusion strength. There was a differential effect of the background on the assimilative and contrast illusions, owing respectively to small and large tilts of the inducing elements. The illusion was markedly reduced at small visual angles when the background was absent, but it was only slightly affected when the background was present. All these findings are difficult to explain in terms of interactions between single units, either at the same or at different scales in the image. The effects of luminance contrast and isoluminance on the illusion were not consistent with either theory, but they indicated that researchers need to consider the role of figure-ground organization in this illusion.     

Seeking revenge or seeking reconciliation? How concern for social‐image and felt shame helps explain responses in reciprocal intergroup conflict

In conflicts with reciprocal violence, individuals belong to a group that has been both perpetrator and victim. In a field experiment in Liberia, West Africa, we led participants (N = 146) to focus on their group as either perpetrator or victim in order to investigate its effect on orientation towards inter‐group reconciliation or revenge. Compared to a perpetrator focus, a victim focus led to slightly more revenge orientation and moderately less reconciliation orientation. The effect of the focus manipulation on revenge orientation was fully mediated, and reconciliation orientation partly mediated, by viewing the in‐group's social‐image as at risk. Independent of perpetrator or victim focus, shame (but not guilt) was a distinct explanation of moderately more reconciliation orientation. This is consistent with a growing body of work demonstrating the pro‐social potential of shame. Taken together, results suggest how groups in reciprocal conflict might be encouraged towards reconciliation and away from revenge by feeling shame for their wrongdoing and viewing their social‐image as less at risk. As victims and perpetrators are widely thought to have different orientations to inter‐group reconciliation and revenge, we suggest that work on reciprocal conflicts should account for the fact that people can belong to a group that has been both perpetrator and victim.     

Neural correlates of sensory‐enabling presentation: An fMRI study of image zooming and rotation video effects on online apparel shopping

For experience products, such as apparel, sensory‐enabling presentations that provide a sense of tactile experience have been suggested as an effective strategy to reduce perceived risk and increase the likelihood of a pleasurable shopping experience. Using functional Magnetic Resonance Imaging (fMRI), we investigated whether sensory‐enabling presentations, specifically, image zooming and rotation videos, would evoke different cognitive and affective brain functions during product evaluation and purchase decision processes. The results suggested that whereas image zooming may evoke more visual perception in the product evaluation process, the rotation view evokes more mental imagery, pleasure, and reward anticipation during the purchase decision process. Copyright © 2014 John Wiley & Sons, Ltd.     

Examining reproducibility in psychology: A hybrid method for combining a statistically significant original study and a replication

The unrealistically high rate of positive results within psychology has increased the attention to replication research. However, researchers who conduct a replication and want to statistically combine the results of their replication with a statistically significant original study encounter problems when using traditional meta-analysis techniques. The original study’s effect size is most probably overestimated because it is statistically significant, and this bias is not taken into consideration in traditional meta-analysis. We have developed a hybrid method that does take the statistical significance of an original study into account and enables (a) accurate effect size estimation, (b) estimation of a confidence interval, and (c) testing of the null hypothesis of no effect. We analytically approximate the performance of the hybrid method and describe its statistical properties. By applying the hybrid method to data from the Reproducibility Project: Psychology (Open Science Collaboration, 2015), we demonstrate that the conclusions based on the hybrid method are often in line with those of the replication, suggesting that many published psychological studies have smaller effect sizes than those reported in the original study, and that some effects may even be absent. We offer hands-on guidelines for how to statistically combine an original study and replication, and have developed a Web-based application (https://rvanaert.shinyapps.io/hybrid) for applying the hybrid method.     

The cheerleader effect is robust to experimental manipulations of presentation time

ABSTRACT

The “cheerleader effect” occurs when the same face is perceived to be significantly more attractive when seen among a group of faces compared to alone. Since perceived attractiveness decreases with additional viewing time, we investigated whether the cheerleader effect occurs simply because the target face is seen for less time in a group than it is alone. Observers rated the attractiveness of each target face twice; once in a group, and once alone. We manipulated the amount of time that each group image was presented for prior to the cue toward the target face (300, 1000, 2000, 3000, or 7000 milliseconds). Faces were perceived to be significantly more attractive in each group condition, regardless of presentation time, replicating the cheerleader effect. Furthermore, uncued presentation time did not modulate the magnitude of this increase, demonstrating that a presentation time discrepancy does not contribute to the size of the typical cheerleader effect.     

More Than Two Choices: The Influence of Context on the Framing Effect

The framing effect demonstrates that two options with different risk levels affect people??s risk preferences, even if both options are logically equivalent. However, in reality we are almost always confronted with more than two choices, rather than a single manipulated message. In this paper, we simultaneously manipulate the framing effect and the context effect, including the attraction effect and the compromise effect, to examine the influence of context on framing. The results of two studies show that context influences the original choice preference arising from the framing effect. Moreover, the framing effect is reduced when context effects are introduced to the original choice set.     

Depression Moderates the Relationship between Body Image and Health-Related Quality of Life in Adolescent Girls

Body image can predict health-related quality of life (HRQoL) in adolescent girls through self-esteem and psychological well-being. Additionally, depression is a significant predictor of adolescents’ HRQoL and is associated with body image. Therefore, we investigated whether the relationship between body image and HRQoL in adolescent girls is moderated by depression. In this cross-sectional study, adolescent girls’ body image, depression, and HRQoL (n?=?385, age: 12–15 years) were measured through self-report questionnaires. Multiple regression and simple slope analyses were conducted to examine the moderating effect of depression. Body image was positively correlated with HRQoL, whereas depression was negatively correlated with body image and HRQoL. Body image, depression, and their interaction explained 44.9% of the variance in HRQoL. Simple slope analysis showed that a more positive body image was associated with higher HRQoL among adolescent girls without depressive symptoms, but was not significantly related to HRQoL for adolescents with depressive symptoms. The moderating effect of depression was confirmed. In conclusion, screening for depression is recommended for adolescent girls prior to implementing body image interventions in schools and the community that are aimed at improving HRQoL. Furthermore, health care providers in schools and the community should provide psychological support for depression along with body image interventions to improve the HRQoL of girls in schools and the community. In particular, for girls with depressive symptoms, depression management should be conducted beforehand.     

Certain Emotional Factors in Learning and Efficiency

A group of measures duplicating the original battery of tests which Halstead used to obtain his four biological intelligence factors were given to a group of subjects with acute lateralized brain lesions. These results were compared to the results of the same battery when administered to subjects with chronic diffuse brain damage. This comparison demonstrated that the factors derived from brain damage testing are affected by (a) the subjects' mental abilities, (b) the sensitivity of the measures to brain damage in general, and (c) the lateralization of the damage.