Fimbria/fornix lesions facilitate the learning of a nonspatial response task

The spatial cognitive map theory of O’Keefe and Nadel (1978) predicts that lesions of the hippocampal system should impair learning on spatial tasks but not learning on nonspatial tasks. However, there is evidence that such lesions can facilitate learning on certain nonspatial tasks. Their theory does not predict such facilitation. Nevertheless, it is reasonable to expect that animals possessing a spatial cognitive map would have an inherent bias to engage a mapping strategy and thus be at a disadvantage on certain nonspatial tasks in comparison with animals without the mapping capacity and bias. In the present study, fimbria/fornix lesions impaired learning on a spatial task, but actually facilitated learning on a nonspatial task of equal difficulty. Thus, brain lesions that interfere with map functioning can facilitate learning on tasks for which a mapping strategy interferes with task solution. The results require a modification of the spatial cognitive map theory.     

EFFECTS OF RESPONSE AND TRIAL REPETITION ON SIGHT-WORD TRAINING FOR STUDENTS WITH LEARNING DISABILITIES

Alternating treatments designs were used to compare the effects of trial repetition (one response within five trials per word) versus response repetition (five response repetitions within one trial per word) on sight-word acquisition for 3 elementary students diagnosed with specific learning disabilities in reading. Although both interventions occasioned the same number of accurate responses per word during training, the trial-repetition condition, which involved complete antecedent-response-feedback sequences, resulted in more words mastered for all 3 students.     

Male Gender Role Conflict,Depression, and Help Seeking: Do College Men Face Double Jeopardy?

To investigate the previously untested hypothesis that college men with higher levels of male gender role conflict (MGRC) experience both increased risk of depression and more negative attitudes toward seeking counseling services, this study used latent variable modeling to examine these relations. Two components of MGRC were identified: restriction-related MGRC, which predicted 25% of the variance in help-seeking attitudes, and achievement-relatedMGRC, which predicted 21% of the variance in depression. It is suggested that outreach programs designed to increase college men's willingness to use counseling services attempt to counter the option-limiting aspects of male gender roles, whereas counseling with depressed college men incorporate an examination of their perceptions of success and achievement.     

American Church/State Jurisprudence from the Warren Court to the Rehnquist Court

The Supreme Court under Chief Justice Earl Warren did much to expand the free exercise of religion and diminish government endorsement of it. The pace at which this occurred slowed under Chief Justice Burger and is directly challenged by the Court under Chief Justice William Rehnquist. This change is documented, followed by an analysis of what seems to animate Rehnquist.     

Alcohol effects on performance monitoring and adjustment: affect modulation and impairment of evaluative cognitive control

Alcohol is known to impair self-regulatory control of behavior, though mechanisms for this effect remain unclear. Here, we tested the hypothesis that alcohol's reduction of negative affect (NA) is a key mechanism for such impairment. This hypothesis was tested by measuring the amplitude of the error-related negativity (ERN), a component of the event-related brain potential (ERP) posited to reflect the extent to which behavioral control failures are experienced as distressing, while participants completed a laboratory task requiring self-regulatory control. Alcohol reduced both the ERN and error positivity (Pe) components of the ERP following errors and impaired typical posterror behavioral adjustment. Structural equation modeling indicated that effects of alcohol on both the ERN and posterror adjustment were significantly mediated by reductions in NA. Effects of alcohol on Pe amplitude were unrelated to posterror adjustment, however. These findings indicate a role for affect modulation in understanding alcohol's effects on self-regulatory impairment and more generally support theories linking the ERN with a distress-related response to control failures.     

The costs of racism for marriage: how racial discrimination hurts, and ethnic identity protects, newlywed marriages among Latinos

The experience of racial or ethnic discrimination is a salient and severe stressor that has been linked to numerous disparities in important outcomes. Yet, the link between perceived discrimination and marital outcomes has been overlooked by research on relationship stressors. The current study examined this link and tested whether ethnic identity buffered the relation between discrimination and ratings of marital quality and verbal aggression. A sample of 330 Latino newlyweds completed measures of perceived discrimination, ethnic identity, spouse's verbal aggression, and marital quality. Each spouse's interviewer also independently rated marital quality. Dyadic analyses revealed that husbands' experience of discrimination negatively predicted wives' marital quality, but only for husbands with weak ethnic identity. Wives whose husbands had strong ethnic identity were buffered from this effect. Identity also buffered the relation between husbands' discrimination and verbal aggression toward their wives, and this effect mediated the association between discrimination, identity, and marital quality.     

Interrogating the Process and Meaning of Intergroup Contact: Contrasting Theoretical Approaches

To address the dearth of research on the process and meaning participants make of intergroup contact in settings of intractable conflict, Israeli, Palestinian and US youth were randomly assigned to conditions of dialogue‐based contact rooted in distinct social psychological theories. Over a 2‐week period, participants completed diaries containing surveys of psychological experience and space for free reflection. US youth reported lower levels of engagement, social identity salience and positive mood relative to Israelis and Palestinians. Qualitative data revealed a pattern of detachment and dissatisfaction among US youth. Compared with participants in a recategorization condition, participants in a mutual differentiation condition of dialogue reported lower levels of self‐consistency and higher levels of intergroup differentiation over time, suggesting the effectiveness of this approach to initiate a process of self‐reflection and intergroup distinctiveness. Palestinian participants in the mutual differentiation condition reported higher levels of empowerment and positive mood throughout contact relative to all other participants, suggesting the effectiveness of this approach to challenge power asymmetries and its positivity for the low‐status group. Results are discussed in terms of innovative methodological approaches to study intergroup processes in contact settings. Copyright © 2013 John Wiley & Sons, Ltd.     

Shifts in attention biases in response to acute pain induction: examination of a model of "conversion" among repressors

Unlike most people, those who are characterized by a repressive coping style report high levels of physical (sensory) pain but low levels of emotional distress (affective pain), which is a discrepancy that may suggest a "conversion" process. In two studies, we tested an attention allocation model, proposing that repressors direct attention away from threatening negative affective information and toward nonthreatening physical pain information during emotionally arousing (painful) situations. In Study 1, 84 participants underwent a cold pressor and then recovered. Repressors reported greater pain during recovery than low- and high-anxious participants, but they reported lower distress than high-anxious participants. Repressors reported significant and large discrepancies between high pain and low distress, whereas these differences were less pronounced for other groups. In Study 2, 77 participants underwent an ischemic pain task while performing a modified dot-probe task with sensory and negative affective pain words as stimuli. Repressors showed increasing biases away from affective pain words and toward sensory pain words as the pain task continued, whereas low- and high-anxious participants did not show these shifts in attention. The results support the notion that conversion among repressors may involve a process by which attention is directed away from emotional distress during noxious stimulation and is focused instead on sensory information from pain.