Developmental differences in shape processing

Considerable evidence indicates that shape similarity plays a major role in object recognition, identification and categorization. However, little is known about shape processing and its development. Across four experiments, we addressed two related questions. First, what makes objects similar in shape? Second, how does the processing of shape similarity develop? We specifically asked whether children and adults determine shape similarity by using categories (e.g., straight vs. curved), as proposed by Biederman (1987), or whether they treat all shape variability uniformly, as proposed by Ullman (1998). Findings from Experiments 1 and 2 suggest that adults and 7-year-olds generally engage in a process in which they impose categories on shape variation and judge objects that fall within those categories as being similar in shape. Four-year-olds are far less likely to engage in such a process. Experiments 3 and 4 address whether 4-year-olds are more likely to treat shape similarity categorically (as older children and adults do) when the objects are given familiar names, functions, and internal properties. Naming did lead to more advanced treatment of shape similarity in some cases. Overall, these findings provide evidence of developmental differences in shape processing and suggest that knowledge of abstract properties of objects may affect the calculation of shape similarity.     

The effect of ostracism upon mood in youth with borderline personality disorder

The experience of rejection or abandonment in Borderline Personality Disorder (BPD) can lead to profound changes in affect. Yet, the intensity, duration, and type of mood changes that occur in response to rejection remain unclear. This study examined the effect of ostracism upon mood in 30 outpatient youth diagnosed with BPD and 22 healthy community control participants (aged 15-24). Cyberball, a virtual balltoss game, was used to simulate ostracism and 13 mood states were recorded before, immediately after, and 15 minutes after the game. The results showed that while ostracism induced changes in anger, rejection, surprise, suspicion, and joy, there were no differences in the pattern of emotional responding and regulation between the two groups. The BPD group consistently rated their mood as more intense across all 13 mood states and across time compared with the control group. These findings suggest that, compared to healthy individuals, those youth with BPD experience negative emotions as more intense and that in mild cases of interpersonal rejection, their emotional responding and regulation are similar to their healthy peers.     

Experiential Avoidance and Emotion Regulation in Borderline Personality Disorder

Many of the severe behavioral difficulties observed among persons with BPD (e.g., self-harm, suicidal behaviors) have been conceptualized as attempts to avoid or escape unwanted emotional experiences. As such, experiential avoidance likely plays a prominent role in the difficulties faced by persons with BPD. Individuals with BPD have demonstrated heightened levels of experiential avoidance in several studies. Several key features of BPD may contribute to experiential avoidance among persons with BPD, including a vulnerability to negative or distressing emotions, difficulty regulating emotions, and distress intolerance. Some research also suggests that a vulnerability to negative emotions among persons with BPD may be partly due to the use of experiential avoidance strategies to cope with emotional experiences. Within this paper, we review the literature on experiential avoidance and possible mechanisms underlying experiential avoidance among persons with BPD, and discuss the research and clinical implications of this literature.     

Developmental and dyadic perspectives on commitment in adult romantic relationships

We tested hypotheses concerning the developmental roots of becoming the "weak-link" (less committed) partner in adult romantic relationships and the associations between partners' absolute and relative levels of commitment and dyadic outcomes. We examined 78 target 20- to 21-year-olds who were involved in a romantic relationship and who had been studied since birth. As predicted, people who received lower-quality support from caregivers in toddlerhood or who were less able to resolve conflicts with a best friend in midadolescence were more likely to become the weak-link partner in a romantic relationship at age 20 to 21. Furthermore, lower commitment on the part of the weak-link partner coupled with greater discrepancy in commitment between partners predicted a greater likelihood that the couple would display hostility (rated by observers) during a videotaped conflict-resolution task when they were 20 to 21 years old. These findings are discussed from developmental and dyadic perspectives.     

Diagnosing criterion-level effects on memory: what aspects of memory are enhanced by repeated retrieval?

Previous research has shown that increasing the criterion level (i.e., the number of times an item must be correctly retrieved during practice) improves subsequent memory, but which specific components of memory does increased criterion level enhance? In two experiments, we examined the extent to which the criterion level affects associative memory, target memory, and cue memory. Participants studied Lithuanian-English word pairs via cued recall with restudy until items were correctly recalled one to five times. In Experiment 1, participants took one of four recall tests and one of three recognition tests after a 2-day delay. In Experiment 2, participants took only recognition tests after a 1-week delay. In both experiments, increasing the criterion level enhanced associative memory, as indicated by enhanced performance on forward and backward cued-recall tests and on tests of associative recognition. An increased criterion level also improved target memory, as indicated by enhanced free recall and recognition of targets, and improved cue memory, as indicated by enhanced free recall and recognition of cues.     

Peer influence on event reports among adolescents and young adults

When two or more people witness an event together, the event report from one person can influence others' reports. In the current study we examined the role of age and motivational factors on peer influence regarding event reports in adolescents and young adults. Participants (N=249) watched a short video of a robbery then answered questions with no co-witness information or with information believed to be from a co-witness. Public and private response conditions were included to explore motivations for peer influence. Co-witness information influenced participants' responses, although the effect was equally strong in the private and the public co-witness conditions. Peer influence on event reports was steady across a large age range (11- to 25-year-olds).     

Prioritizing Harm

In this study, we examined if a self-report of trait spite, the Spitefulness Scale, retains the same associations with dark personality traits in individuals with severe mental illness. We also examine if reports on the Spitefulness Scale are correlated with observed spiteful behavior in a game developed to offer opportunities for spite. One hundred twenty individuals clinically diagnosed with psychotic spectrum disorders and receiving inpatient treatment at a state hospital participated in this study and completed measures of personality. The Spitefulness Scale retained its associations with measures of dark personality traits in individuals with psychosis. Spitefulness Scale scores were also related to a performance measure of spite and spite was evidenced by a significant proportion of participants across measures (20.8%–26.7%). These data suggest the presence of spite as it is understood in the general population in a significant subset of individuals with psychosis. Spite could be considered an independent personality trait and part of the family of dark personality traits.     

Teaching Tradition: Diverse Perspectives on the Pilot Urban American Indian Traditional Spirituality Program

Many urban American Indian community members lack access to knowledgeable participation in indigenous spiritual practices. And yet, these sacred traditional activities remain vitally important to their reservation‐based kin. In response, our research team partnered with an urban American Indian health center in Detroit for purposes of developing a structured program to facilitate more ready access to participation in indigenous spiritual knowledge and practices centered on the sweat lodge ceremony. Following years of preparation and consultation, we implemented a pilot version of the Urban American Indian Traditional Spirituality Program in the spring of 2016 for 10 urban AI community participants. Drawing on six first‐person accounts about this program, we reflect on its success as a function of participant meaningfulness, staff support, mitigated sensitivities, and program structure. We believe that these observations will enable other community psychologists to undertake similar program development in service to innovative and beneficial impacts on behalf of their community partners.     

Individual differences in hedonic capacity,depressed mood,and affective states predict emotional reactivity

Identifying factors that contribute to inter-individual differences in emotional reactivity is central to understanding the basic mechanisms that give rise to adaptive emotion reactivity and to disruptions that may occur in psychopathology. The current study related emotional reactivity in an unselected young adult sample (N?=?101) to individual difference factors relevant to emotional functioning and mood pathology, specifically anhedonia, depressed mood, and current affective state. To assess emotional reactivity, participants rated their emotional responses to 100 pictures from the International Affective Picture System. Increased self-reported anhedonia (i.e. reduced hedonic capacity) predicted blunted emotional reactivity to both positive and negative images, relative to neutral images, while elevated depressed mood predicted potentiated emotional reactivity to negative vs. neutral images. Anhedonia also accounted for far greater variance in emotional reactivity than depressed mood. Further, more positive affective state predicted potentiated reactivity to positive versus neutral images while more negative affective state predicted potentiated reactivity to negative versus neutral images beyond effects of anhedonia and depressed mood. The current study identified separable effects of anhedonia, depressed mood, and current affect on emotional reactivity.