Foveal spatial summation in human cone mechanism

We measured at the fovea the chromatic contrast threshold for stimuli modulated along different chromatic directions in the isoluminant plane of MBDKL colour space, considering the two cardinal axes (L/M) and S/(L + M) and other intermediate non-cardinal directions. This psychophysical determination was conducted as a function of stimulus size. The test stimulus was a foveal isoluminant Gaussian patch with a raised cosinusoidal temporal profile superimposed on a neutral background. The task was performed binocularly. The increment threshold was measured for three observers by a Bayesian adaptive psychometric method (QUEST). The Ricco area of complete spatial summation was estimated from the threshold-versus-area curves. The perceptive fields are smaller for the L/M-cone opponent direction than the S/(L + M)-cone opponent. The perceptive field sizes for the stimuli in non-cardinal chromatic directions and stimuli modulated at the (L/M)-cone opponent direction present similar values. Measurements were made at two luminance levels, 5 and 40 cd m(-2), but the differences found were small. The perceptive field sizes found could be associated with LGN area.     

Modulating effects in learned helplessness of dyadic dominance-submission relations

In this experiment, learned helplessness was studied from an ethological perspective by examining individual differences in social dominance and its influence on the effects of helplessness. Ninety animals were used, 30 randomly selected and 60 selected because of their clear dominance or submission. Each condition (dominant, submissive, and random) was distributed in three subgroups corresponding to the triadic design. The test consisted of an escape/avoidance task. The results showed that the animals in the uncontrollable condition performed worse than those in the controllable and no treatment conditions. Social submission and dominance reduced vulnerability of the subjects against learned helplessness. Submission had a facilitating effect on subsequent learning, independently of whether pretreatment was controllability or uncontrollability. Learned mastery was observed in the submissive condition, because submission benefited the subjects in the controllable condition in comparison with the untreated subjects, and dominance impaired the subjects in the controllable condition.     

Effect of reading with reversed speech on frequency of stuttering in adults

This study explored the effect of reading with reversed speech on the frequency of stuttering. Eight adults who stutter served as participants and read four 300-syllable passages while listening to three types of speech stimuli: normal speech (choral reading), reversed speech at normal speed, reversed speech at half speed, and a control condition of no auditory feedback. A repeated-measures analysis of variance showed a significant decrease in stuttering frequency in the choral reading condition but not in reversed speech at normal and half speed. However, the reversed speech at half-speed condition showed a large effect size (omega2 = 0.32). Data suggest that a forward moving speech feedback is not essential to decrease the frequency of stuttering in adults who stutter.     

Once upon a time…: Using fairy tales as a form of vicarious contact to prevent stigma-based bullying among schoolchildren

We conducted a vicarious contact intervention with the aim of promoting bystanders' intentions to react to stigma-based bullying among schoolchildren. Participants were Italian primary schoolchildren (N = 117 first to third graders); the outgroup was represented by foreign children. Vicarious contact was operationalized with story reading, creating fairy tales on stigma-based bullying where minority characters were bullied by majority characters. Once a week for 3 weeks, participants were read fairy tales in small groups by an experimenter and engaged in reinforcing activities. Results revealed that the intervention increased intergroup empathy (but not intergroup perspective-taking) and anti-bullying peer norms and fostered contact intentions. The intervention also had indirect effects via intergroup empathy on helping and contact intentions and on bystanders' reactions to stigma based-bullying. We discuss theoretical and practical implications, also in terms of the relevance of the present results for school policy. Please refer to the Supplementary Material section to find this article's Community and Social Impact Statement .     

Yoga-integrated psychotherapy for emotion dysregulation: A pilot study

Aims & Objectives

Yoga has been evidenced as beneficial for physical and mental health. This study sought to pilot the acceptability and feasibility of a yoga-integrated psychotherapy (YiP) intervention, aimed at alleviating difficulties in emotion regulation. A further aim was to explore the perceived effectiveness of YiP in alleviating depression, anxiety and improving well-being.

Methods

Seven participants who scored significantly on the Difficulties in Emotion Dysregulation Scale (DERS) took part in a psychological assessment session followed by six weekly one hr therapy sessions. Participants completed self-report measures in each session to quantify the effects of each YiP session on emotion regulation, well-being, depression and anxiety. Following seven sessions, five participants completed qualitative follow-up interviews to explore subjective experiences of YiP and any perceived impacts.

Findings

An ANOVA that contained data from seven participants who completed all six sessions revealed that DERS scores were significantly lower, and well-being scores were significantly higher, at both mid and end-points than at baseline. Thematic analysis of qualitative interviews identified five themes: “YiP assists the client's psychological and emotional processing,” “YiP improves insight and focus,” “YiP is culturally sensitive,” “the body facilitates regulation and resilience” and “YiP is acceptable & impactful.”

Conclusion

The study presents promising findings for the integration of yoga into psychotherapeutic practice and indicates that YiP may have beneficial effects on emotion regulation and psychological well-being. Future research should use randomised controlled methodologies to examine the ability of YiP to alleviate a wide range of affective symptoms using a larger sample of participants.     

Is the face-perception system human-specific at birth?

The present study investigates the human-specificity of the orienting system that allows neonates to look preferentially at faces. Three experiments were carried out to determine whether the face-perception system that is present at birth is broad enough to include both human and nonhuman primate faces. The results demonstrate that the newborns did not show any spontaneous visual preference for the human face when presented simultaneously with a monkey face that shared the same features, configuration, and low-level perceptual properties (Experiment 1). The newborns were, however, able to discriminate between the 2 faces belonging to the 2 different species (Experiment 2). In Experiment 3, the newborns were found to prefer looking at an upright, compared with an inverted, monkey face, as they do for human faces. Overall, the results demonstrate that newborns perceive monkey and human faces in a similar way. These findings are consistent with the hypothesis that the system underlying face preference at birth is broad enough to bias newborns' attention toward both human and nonhuman primate faces.     

War trauma lingers on: Associations between maternal posttraumatic stress disorder,parent–child interaction,and child development

Maternal traumatization has been proposed as a risk factor for child development, but the mechanisms involved are poorly understood. This study analyzed the interrelations among maternal posttraumatic stress symptoms, parent–child interaction (emotional availability), and infants' psychosocial functioning and development among 49 asylum‐seeker and refugee mothers and their children (18–42 months). Measures included assessment of mothers' trauma and comorbid symptoms (Harvard Trauma Questionnaire: R.F. Mollica et al., 1992 ; Hopkins Symptom Checklist: L. Derogatis, R. Lipman, K. Rickels, E. Uhlenhuth, & L. Covi, 1974 ), emotional availability within parent–child interaction (Emotional Availability Scales: Z. Biringen, 2008 ), and infants' psychosocial functioning (Child Behavior Checklist: T.M. Achenbach & L.A. Rescorla, 2000 ) and development (Bayley Scales of Infant Development: B.F. van der Meulen, S.A.J. Ruiter, H.C. Spelberg, & M. Smrkovsky, 2000 ). The results show that higher levels of maternal posttraumatic stress symptoms are associated with a higher level of psychosocial problems of infants, but not with delays in their mental or psychomotor development. The results also show that higher levels of maternal posttraumatic stress symptoms are associated with higher levels of insensitive, unstructuring, or hostile, but not intrusive, parent–child interactions. Infants show lower levels of responsiveness and involvement to their traumatized mothers. Parent–child interaction did not function as a mediator between maternal trauma symptoms and infants' psychosocial functioning. Results are discussed in relation to the dyad's regulation of emotions. Results implicate a need to reestablish attunement between traumatized mothers and their nontraumatized children.     

Cognitive contributions of the ventral parietal cortex: an integrative theoretical account

Although ventral parietal cortex (VPC) activations can be found in a variety of cognitive domains, these activations have been typically attributed to cognitive operations specific to each domain. In this article, we propose a hypothesis that can account for VPC activations across all the cognitive domains reviewed. We first review VPC activations in the domains of perceptual and motor reorienting, episodic memory retrieval, language and number processing, theory of mind, and episodic memory encoding. Then, we consider the localization of VPC activations across domains and conclude that they are largely overlapping with some differences around the edges. Finally, we assess how well four different hypotheses of VPC function can explain findings in various domains and conclude that a bottom-up attention hypothesis provides the most complete and parsimonious account.