Memory modulated saliency: A computational model of the incremental learning of target locations in visual search

The top-down guidance of visual attention is one of the main factors allowing humans to effectively process vast amounts of incoming visual information. Nevertheless we still lack a full understanding of the visual, semantic, and memory processes governing visual attention. In this paper, we present a computational model of visual search capable of predicting the most likely positions of target objects. The model does not require a separate training phase, but learns likely target positions in an incremental fashion based on a memory of previous fixations. We evaluate the model on two search tasks and show that it outperforms saliency alone and comes close to the maximal performance of the Contextual Guidance Model (CGM; Torralba, Oliva, Castelhano, & Henderson, 2006; Ehinger, Hidalgo-Sotelo, Torralba, & Oliva, 2009), even though our model does not perform scene recognition or compute global image statistics. The search performance of our model can be further improved by combining it with the CGM.     

Job Demand–Control–Support and diabetes risk: The moderating role of self-efficacy

Work-related stressors, including high demands and low control, play a significant role in the aetiology of diabetes. Nevertheless, most studies focus on main effects, and few consider individual differences that may moderate the stress–health association. Drawing from the Job Demands–Control-–Support (JDC-S) model, this study addresses this gap by testing how baseline levels of JDC-S affect an increase in two risk factors for diabetes—glycated haemoglobin (HbA1C) and fasting plasma glucose (FPG)—and by investigating the moderating role of self-efficacy. Participants (N = 1618) were Israeli employees who attended two consecutive routine health examinations. All were free of diabetes at baseline. JDC-S and self-efficacy were assessed at baseline (T1), and HbA1C and FPG were assessed at T1 and T2. Data were analysed with logistic and linear regressions, controlling for well-established diabetes risk factors. High demands and low support predicted an increase in HbA1C and FPG. In addition, high self-efficacy interacted with high demands and with low control in the prediction of an increase in HbA1C and FPG. Although employees with high self-efficacy might function well at work, overloading them may harm their physical health. Similarly, incongruence between employees’ sense of ability and the control given to them at work may result in physical impairment.     

Do Occupational Performance and Social Support Predict Health and Well-Being Among Mothers of Preterm Infants?

Journal of Child and Family Studies - Giving birth to a preterm infant has significant implications on the mother’s life. The purpose of this study was to compare occupational performance...     

Working memory in the oldest-old: evidence from output serial position curves

In the present study, we examined adult age differences in short-term and working memory performance in middle-aged (45–64 years), young–old (65–74 years), old–old (75–89 years), and oldest–old adults (90 years and over) in the Louisiana Healthy Aging Study. Previous research suggests that measures of working memory are more sensitive to age effects than are simple tests of short-term memory Bopp and Verhaeghen (Journal of Gerontology: Psychological Sciences 60:223–233, 2005), Myerson, Emery, White, and Hale, (Aging, Neuropsychology, and Cognition 10:20–27, 2003). To test this hypothesis, we examined output serial position curves of recall data from three span tasks: forward and backward digit span and size judgment span. Participants’ recall patterns in the size judgment span task revealed that the two oldest groups of adults showed the largest decreases in recall performance across output serial positions, but did not differ significantly from each other. Correlation analyses indicated the strongest negative correlation with age occurred with the size judgment span task. Implications of these findings for understanding strategic processing abilities in late life are discussed.     

How accounts shape lending decisions through fostering perceived trustworthiness

We examine the roles of social accounts in influencing lenders’ decisions about loaning money to borrowers. Using field data and a laboratory experiment, we show that lenders will lend money depending on the accounts borrowers tell. In Study 1, field data from a peer-to-peer lending website reveal that two-account combinations (explanation–acknowledgment and explanation–denial) increase the likelihood of favorable lending decisions. A laboratory study helps explain the important role of accounts by unpacking the process of perceived borrower trustworthiness in lending decisions. A final field study assessing the performance of loans 2 years after origination shows that accounts, despite having a positive effect on the loan decision process, negatively predict loan performance. Collectively, the three studies show that accounts facilitate economic exchanges between unacquainted transaction partners because of their role in increasing perceived trustworthiness, but that ironically, accounts can negatively relate to loan performance.     

Estimating linear effects in ANOVA designs: The easy way

Research in cognitive science has documented numerous phenomena that are approximated by linear relationships. In the domain of numerical cognition, the use of linear regression for estimating linear effects (e.g., distance and SNARC effects) became common following Fias, Brysbaert, Geypens, and d'Ydewalle's (1996) study on the SNARC effect. While their work has become the model for analyzing linear effects in the field, it requires statistical analysis of individual participants and does not provide measures of the proportions of variability accounted for (cf. Lorch & Myers, 1990). In the present methodological note, using both the distance and SNARC effects as examples, we demonstrate how linear effects can be estimated in a simple way within the framework of repeated measures analysis of variance. This method allows for estimating effect sizes in terms of both slope and proportions of variability accounted for. Finally, we show that our method can easily be extended to estimate linear interaction effects, not just linear effects calculated as main effects.     

POSTPARTUM BONDING DIFFICULTIES AND ADULT ATTACHMENT STYLES: THE MEDIATING ROLE OF POSTPARTUM DEPRESSION AND CHILDBIRTH‐RELATED PTSD

Despite decades of research demonstrating the role of adult attachment styles and early mother–infant bonding in parenting behaviors and maternal mental health, these constructs have seldom been studied together. The present study aimed to investigate the relationship between attachment styles and specific bonding difficulties of mothers. In addition, as postpartum depression and childbirth‐related posttraumatic stress symptoms have been associated with both constructs, we explored their possible mediation effect. One hundred fourteen mothers, 4 to 12 weeks’ postpartum, completed a demographic questionnaire, the Adult Attachment Style Questionnaire (M. Mikulincer, V. Florian, & A. Tolmacz, 1990), the Postpartum Bonding Questionnaire (L.F. Brockington, C. Fraser, & D. Wilson, 2006), the Modified Perinatal Posttraumatic Stress Disorder Questionnaire (J.L. Callahan, S.E. Borja, & M.T. Hynan, 2006), and the Edinburgh Postnatal Depression Scale (J.L. Cox, G. Chapman, D. Murray, & P. Jones, 1996), using an online survey system. As predicted, insecure attachment styles were associated with bonding difficulties wherein anxious/ambivalent attachment was associated with greater infant‐focused anxiety, mediated by postpartum depression but not childbirth‐related PTSD symptoms. In contrast, greater avoidant attachment style was associated with greater rejection and anger, mediated by childbirth‐related posttraumatic stress disorder (PTSD), but not depression symptoms. The current study confirmed the association of different attachment styles with bonding as well as the mediating roles of childbirth‐related PTSD and postpartum depression symptoms. Future psychological interventions may utilize such evidence to target interventions for bonding disorders in accordance with individual differences.     

Group norms and excessive absenteeism: The role of peer referent others

Drawing from social identity and social influence theory, we propose that the absence-related norms of an individual’s work-based referent others will have a significant effect on the likelihood of excessive absence behavior. We then develop and test a model of the social mechanisms potentially underlying the relationship between referent absence norms and the likelihood of excessive absence behavior. Our findings indicate that referent group norms significantly explain excessive absence behavior, even when taking into account the absence norms associated with the formal organizational units within which these referent groups are often nested. They also indicate that permissive referent group norms are likely to have a greater impact on the probability of target excessive absence when the target has a more conformist disposition. Finally, post-hoc findings suggest that the more negative targets’ perceptions of the consequences of absenteeism, the more attenuated the impact of permissive group norms on excessive absence behavior.     

Perspective Taking and Intergroup Helping Intentions: The Moderating Role of Power Relations1

People are more willing to help those who belong to their own groups than to an out‐group. Research on perspective taking has shown that many forms of in‐group favoritism disappear when people are led to take the perspective of the other group. The current research explores the possibility of increasing the level of intergroup helping by a perspective‐taking manipulation. An experiment in a Polish‐Czech borderland community high school demonstrated that Polish students who were made to imagine that they became members of an out‐group (perspective‐taking manipulation) were more willing to help out‐group members. The moderating role of perceived power is discussed in the context of perspective‐taking theory.     

Variety‐Seeking and Perceived Expertise

People often infer expertise from the choice of unique, rare, or sophisticated options. But might mere variety‐seeking also serve as a signal of expertise, and if so, how? Six studies show that the relationship between variety‐seeking and perceived expertise is not unidirectional and depends on the perceiver's own level of expertise. Category experts perceive lower variety‐seeking as indicative of discernment, which in turn increases perceived expertise in that category. Consequently, experts choose less variety to portray themselves as experts. In contrast, novices perceive high variety‐seeking as indicative of category breadth knowledge, which in turn increases their perception of category expertise. Consequently, novices choose more variety to portray themselves as experts. The findings make novel theoretical contributions to research on variety‐seeking, consumer expertise, and social perception, as well as practical contributions for marketers of product assortments and bundles.