Variations in explicitly unpaired training are differentially effective in producing conditioned inhibition

To evaluate a contingency interpretation of conditioned inhibition (CI), rats were given “explicity unpaired” training in which the locus and duration of a CS within the inter-US (shock) interval were systematically manipulated for different groups. Summation and retardation tests in Experiment 1 indicated that stronger CI resulted from both a backward and a trace CS than from a midlocus CS of equal or greater duration. Complementing these findings, the same tests in Experiment 2 showed that, by comparison with novel-stimulus controls, CI developed to a trace CS but not to a mid-locus CS, nor to a trace CS that was accompanied by an immediate signal for the US. These findings argue against a contingency interpretation of CI and favor a contiguity interpretation stressing the short-term rehearsal of stimulus events. Such rehearsal of the US allows a backward CS, but not a mid-locus CS with an extended US-CS interval, to be discriminated as a signal for nonreinforcement, and thus to develop as a conditioned inhibitor. Similarly, excitatory conditioning to the memory trace of a CS allows the nominal trace CS to develop as a signal for nonreinforcement, and thus as a conditioned inhibitor, but not when its memory trace is overshadowed by another CS that immediately precedes the US. In short, the development of CI is facilitated when excitation is mediated by the memorial processing of either the US or a discrete CS for the US rather than by contextual cues.     

Parent and Adolescent Responses to PovertyRelated Stress: Tests of Mediated and Moderated Coping Models

We tested several models of the associations among economic strain, life stress, coping, involuntary stress responses, and psychological symptoms in a sample of 57 parent-adolescent dyads from rural, lower-income families. Economic strain and life stress predicted symptoms for both parents and adolescents. Stressor-symptom specificity was found for parents, such that economic strain uniquely predicted depression, whereas negative life events predicted hostility. Involuntary stress responses were associated with higher levels of symptoms for both parents and the adolescent children. Secondary control coping was associated with fewer symptoms for both parents and adolescents. Results support a mediational role of coping and responses to stress during adolescence, with a shift to moderational status in adulthood. Implications of these results are discussed with regard to developmental coping theory and potential interventions with at-risk families.     

Negative cognitive style and looming cognitive style synergistically predict stress generation

There is a growing body of evidence that suggests that cognitive vulnerabilities to depression or anxiety may lead individuals to generate negative interpersonal life events. However, there has been no study to date that examines the effects of co-occurring vulnerabilities to depression and anxiety. In a sample of 304 participants, we examined the potential interaction of co-occurring negative cognitive style, a vulnerability to depression and looming cognitive style, vulnerability to anxiety. Results indicate that co-occurring cognitive vulnerabilities synergistically predict higher levels of negative interpersonal life events six weeks later, even when controlling for initial levels of stressful life events and symptoms of depression and anxiety. Thus, co-occurring vulnerabilities may have stronger stress generating effects than would be expected from the additive effects of each vulnerability considered separately. This finding highlights the importance of examining cognitive vulnerabilities as interactive effects rather than as individual vulnerabilities.     

Grateful individuals are not suicidal: Buffering risks associated with hopelessness and depressive symptoms

With suicidal behavior serving as a leading cause of injury and death around the world, researchers must expand ongoing efforts to uncover protective factors. In this study, we examined if gratitude mitigated existing risk factors for suicide. Specifically, we predicted that gratitude moderates the relationship between suicidal ideation and (a) hopelessness and (b) depressive symptoms in a sample of 369 diverse undergraduate students. Results indicate that for people who are highly grateful, both hopelessness and depressive symptoms are less likely to be associated with thoughts and intentions to kill oneself. The findings demonstrate the value of integrating protective factors against suicidality, including character strengths such as gratitude, into existing theories that tend to be limited to vulnerability factors. We offer tentative ideas for enhancing the impact of suicide prevention and intervention programs by directly addressing gratitude, which has been shown to be highly modifiable.     

Stress-Induced Drinking in Parents of Boys with Attention-Deficit-Hyperactivity Disorder: Heterogeneous Groups in an Experimental Study of Adult-Child Interactions

Research on whether parents of children with externalizing disorders are at elevated risk for alcohol problems is equivocal. To reduce this ambiguity, we examined how individual differences in stress reactivity might moderate the drinking behavior of such parents. Parents (119 mothers, 44 fathers) of ADHD sons interacted with different child confederates during each of two counter-balanced sessions. In one, the confederate portrayed a friendly, cooperative, “normal” boy; in the other, the confederate portrayed a “deviant” boy who exhibited behavior characteristic of externalizing disorders. Following each interaction, parents were given an opportunity for ad lib consumption of alcohol while anticipating a second interaction. Latent class analysis identified three subgroups of parents using distress scores and alcohol consumption: minimal stress reactivity; reacts to child deviance with increased distress, but not increased drinking; marked stress-induced drinking. Decisions about the nature and proper treatment of parents raising children with ADHD may be compromised by failure to attend to individual differences in stress reactivity and inclinations to use drinking to cope.     

The Costs of Hiding and Faking Emotions: The Case of Extraverts and Introverts

The present study examined the moderation effects of extraversion on the relationships between hiding and faking emotions, perceived satisfaction from intimate relationships, and reported physical health concerns. Four hundred and four Israeli participants, who were all involved in intimate relationships at the time of the study, responded to the Extraversion scale from the Big-Five Inventory, the DEELS to measure hiding and faking emotions, the SELF to assess physical health concerns, and the short version of the ENRICH to evaluate perceived satisfaction with intimate relationships. The mean age was 32.3 years (SD = 8.2); and the average length of time as a couple was 7.8 years (SD = 8.2). Of the participants, 198 were married (48.5%). The findings indicate that the effect of hiding negative emotions was stronger for perceived satisfaction with intimate relationships and physical health concerns than that for faking positive emotions. Extraverts who showed a higher frequency of hiding their negative emotions were significantly less satisfied with their relationships than introverts and they also tended to report more concerns with their physical health. These results were not found when extraverts reported a high frequency of faking positive emotions. These results are discussed in the context of the trait-behavior-concordance model and stress the importance of distinguishing faking from hiding.     

Engagement in a Science Museum – The Role of Social Interactions

This qualitative research explores the interactions of elementary school students during free-choice activity with science museum exhibits. The study participants were 39 students, who visited a science museum on six occasions during a three-year-period (from 4^th to 6^th grades). Our study showed that most interactions around exhibits are social in nature. Within these social interactions, students mainly discuss the technicalities of operating the exhibits and rarely engage with their scientific content. On occasion, exhibits are no more than settings for social interactions that could equally occur, for example, in the schoolyard. The main implications of this study concern exhibit design and pedagogy. Because students find ways to create their own social interactions in museum settings, museum pedagogy should leverage this social interaction into cognitive engagement with the scientific content of exhibits.     

Cyberbullying Involvement of Adolescents with Low Vision Compared to Typical Adolescents,as Related to Perceived Social Support

This study examined adolescents with low vision (LV) compared to students without disabilities regarding their cyberbullying experiences, as related to perceived social support. Sample consisted of 407 students (61 with LV) who completed self-reported questionnaires. Findings revealed that students with LV are using the computer and the Internet as much as the typical students, but students with LV had less frequent Internet interactions with friends. Students with LV reported being more involved in cyberbullying as cybervictims, cyberperpetrators, cyberwitnesses, knowing someone and telling their online experience to another, and having lower social support compared to students without disabilities. Students with LV are more willing to report and to share their online experiences with another person. The findings add to our knowledge about students’ experiences of cyberbullying and suggest implementing effective coping strategies programs to raise the awareness of cyberbullying risky behavior.     

Effective brain connectivity in children with reading difficulties during phonological processing

Using Dynamic Causal Modeling (DCM) and functional magnetic resonance imaging (fMRI), we examined effective connectivity between three left hemisphere brain regions (inferior frontal gyrus, inferior parietal lobule, fusiform gyrus) and bilateral medial frontal gyrus in 12 children with reading difficulties (M age=12.4, range: 8.11-14.10) and 12 control children (M age=12.3, range: 8.9-14.11) during rhyming judgments to visually presented words. More difficult conflicting trials either had similar orthography but different phonology (e.g. pint-mint) or similar phonology but different orthography (e.g. jazz-has). Easier non-conflicting trials had similar orthography and phonology (e.g. dime-lime) or different orthography and phonology (e.g. staff-gain). The modulatory effect from left fusiform gyrus to left inferior parietal lobule was stronger in controls than in children with reading difficulties only for conflicting trials. Modulatory effects from left fusiform gyrus and left inferior parietal lobule to left inferior frontal gyrus were stronger for conflicting trials than for non-conflicting trials only in control children but not in children with reading difficulties. Modulatory effects from left inferior frontal gyrus to inferior parietal lobule, from medial frontal gyrus to left inferior parietal lobule, and from left inferior parietal lobule to medial frontal gyrus were positively correlated with reading skill only in control children. These findings suggest that children with reading difficulties have deficits in integrating orthography and phonology utilizing left inferior parietal lobule, and in engaging phonological rehearsal/segmentation utilizing left inferior frontal gyrus possibly through the indirect pathway connecting posterior to anterior language processing regions, especially when the orthographic and phonological information is conflicting.