Comorbid Problems in ADHD: Degree of Association,Shared Endophenotypes,and Formation of Distinct Subtypes. Implications for a Future <Emphasis Type="Italic">DSM</Emphasis>

We aimed to assess which comorbid problems (oppositional defiant behaviors, anxiety, autistic traits, motor coordination problems, and reading problems) were most associated with Attention-Deficit/Hyperactivity Disorder (ADHD); to determine whether these comorbid problems shared executive and motor problems on an endophenotype level with ADHD; and to determine whether executive functioning (EF)—and motor-endophenotypes supported the hypothesis that ADHD with comorbid problems is a qualitatively different phenotype than ADHD without comorbid problems. An EF—and a motor-endophenotype were formed based on nine neuropsychological tasks administered to 816 children from ADHD—and control-families. Additional data on comorbid problems were gathered using questionnaires. Results indicated that oppositional defiant behaviors appeared the most important comorbid problems of ADHD, followed by autistic traits, and than followed by motor coordination problems, anxiety, and reading problems. Both the EF—and motor-endophenotype were correlated and cross-correlated in siblings to autistic traits, motor coordination problems and reading problems, suggesting ADHD and these comorbid problems may possibly share familial/genetic EF and motor deficits. No such results were found for oppositional defiant behaviors and anxiety. ADHD in co-occurrence with comorbid problems may not be best seen as a distinct subtype of ADHD, but further research is warranted. Electronic supplementary material  The online version of this article (doi:) contains supplementary material, which is available to authorized users.     

Disability,Dialogue, and the Posthuman

This article is the result of a mutual interest in the radical philosophical dialogue discussed by Martin Buber. The radical dialogue is rooted in western European values of humanism, values that are challenged because they exclude women, people with disabilities, non-western, indigenous people and sexual minorities. With our basis in radical dialogue we are discussing flaws within the very concept of dialogue, how dialogue is challenged in encounters between people with severe disabilities and their helpers, and we are proposing a new interpretation of dialogue in a posthuman area. To illuminate what might be at stake in relations where power is clearly imbalanced we use Pierre Bourdieus theory of the gift when asking ourselves: “How can we understand dialogue when there apparently is one dominant giver and one receiver unable to return the gift?” Discussing this question, we draw on Rosi Braidotti and her Posthuman Critical Theory to see if we can find new grounds to build dialogue on.     

Disclosure on Campus: Students’ Decisions to Tell Others About Unwanted Sexual Experiences,Intimate Partner Violence,and Stalking

The scope of student victimization occurring on college campuses is problematic, drawing the attention of researchers and campus officials. While most researchers of the disclosure of these unwanted experiences tend to examine just 1 form of victimization, a direct comparison of the disclosure of different types of campus victimization within a singular study is missing in the literature. The current study aimed to address this issue by examining 4 types of victimization experiences (unwanted sexual contact, unwanted sexual intercourse, intimate partner violence, and stalking) in a college population. A common set of possible predictors of disclosure were examined, including both demographic (e.g., gender, race, age) and situational factors (e.g., alcohol use, level of fear, relationship with perpetrator). While patterns of similarity across all victimization experiences emerged, the impact of gender, race, age, and alcohol use on disclosure decisions varied substantially by victimization type. The findings of this study address the gap in the current literature by providing a comparison and contrast of the influence of predictors across different types of victimization. Furthermore, the findings provide needed information that could help colleges and universities develop ways to encourage support-seeking and reporting among students.     

Sex differences in the neural underpinnings of social and monetary incentive processing during adolescence

The brain’s reward system undergoes major changes during adolescence, and an increased reactivity to social and nonsocial incentives has been described as a typical feature during this transitional period. Little is known whether there are sex differences in the brain’s responsiveness to social or monetary incentives during adolescence. The aim of this event-related potential (ERP) study was to compare the neurophysiological underpinnings of monetary and social incentive processing in adolescent boys versus girls. During ERP recording, 38 adolescents (21 females, 17 males; 13–18 years) completed an incentive delay task comprising (a) a reward versus punishment condition and (b) social versus monetary incentives. The stimulus-preceding negativity (SPN) was recorded during anticipation of reward and punishment, and the feedback P3 (fP3) along with the feedback-related negativity (FRN) after reward/punishment delivery. During anticipation of social punishment, adolescent boys compared with girls exhibited a reduced SPN. After delivery, male adolescents exhibited higher fP3 amplitudes to monetary compared with social incentives, whereas fP3 amplitudes in girls were comparable across incentive types. Moreover, whereas in boys fP3 responses were higher in rewards than in punishment trials, no such difference was evident in girls. The results indicate that adolescent boys show a reduced neural responsivity in the prospect of social punishment. Moreover, the findings imply that, once the incentive is obtained, adolescent boys attribute a relatively enhanced motivational significance to monetary incentives and show a relative hyposensitivity to punishment. The findings might contribute to our understanding of sex-specific vulnerabilities to problem behaviors related to incentive processing during adolescence.     

Integrating multiple cues to depth order at object boundaries

We examined the interaction between motion and stereo cues to depth order along object boundaries. Relative depth was conveyed by a change in the speed of image motion across a boundary (motion parallax), the disappearance of features on a surface moving behind an occluding object (motion occlusion), or a difference in the stereo disparity of adjacent surfaces. We compared the perceived depth orders for different combinations of cues, incorporating conditions with conflicting depth orders and conditions with varying reliability of the individual cues. We observed large differences in performance between subjects, ranging from those whose depth order judgments were driven largely by the stereo disparity cues to those whose judgments were dominated by motion occlusion. The relative strength of these cues influenced individual subjects' behavior in conditions of cue conflict and reduced reliability.     

Cognitive control and lexical access in younger and older bilinguals

Ninety-six participants, who were younger (20 years) or older (68 years) adults and either monolingual or bilingual, completed tasks assessing working memory, lexical retrieval, and executive control. Younger participants performed most of the tasks better than older participants, confirming the effect of aging on these processes. The effect of language group was different for each type of task: Monolinguals and bilinguals performed similarly on working memory tasks, monolinguals performed better on lexical retrieval tasks, and bilinguals performed better on executive control tasks, with some evidence for larger language group differences in older participants on the executive control tasks. These results replicate findings from individual studies obtained using only 1 type of task and different participants. The confirmation of this pattern in the same participants is discussed in terms of a suggested explanation of how the need to manage 2 language systems leads to these different outcomes for cognitive and linguistic functions.     

Candidate Effects on Election Outcomes: Political Skill,Campaign Efficacy,and Intentions in a British General Election

Integrating Social/Political Influence Theory with the Theory of Planned Behavior, we argue that personal resources (i.e., political skill, self-efficacy) enable political candidates to form more ambitious campaign intentions, and thus perform better in elections. We tested this model with a sample of political candidates (N = 225) campaigning in a British general election. Three months before polling day, candidates provided self-ratings of political skill, domain-specific self-efficacy (i.e., campaign efficacy), and personal campaign intentions during the campaign period. Our results demonstrated that political skill was positively related to campaign efficacy, and intentions, via campaign efficacy. We also found a significant indirect effect for political skill on electoral performance (i.e., percentage of the vote), through campaign efficacy and intentions. Implications of our results for understanding candidate effects in campaigns and future research are discussed.