Dissociation of event-related potentials indexing arousal and semantic cohesion during emotional word encoding

Event-related potential (ERP) studies have shown that emotional stimuli elicit greater amplitude late positive-polarity potentials (LPPs) than neutral stimuli. This effect has been attributed to arousal, but emotional stimuli are also more semantically coherent than uncategorized neutral stimuli. ERPs were recorded during encoding of positive, negative, uncategorized neutral, and categorized neutral words. Differences in LPP amplitude elicited by emotional versus uncategorized neutral stimuli were evident from 450 to 1000 ms. From 450 to 700 ms, LPP effects at midline and right hemisphere frontal electrodes indexed arousal, whereas LPP effects at left hemisphere centro-parietal electrodes indexed semantic cohesion. This dissociation helps specify the processes underlying emotional stimulus encoding, and suggests the need to control for semantic cohesion in emotional information processing studies.     

Does Availability of Mental Health Resources Prevent Recurrent Suicidal Behavior? An Ecological Analysis

This study examines whether availability of mental health resources in the county of residence is associated with subsequent suicidal behavior after a previous suicide attempt. Among 10,922 individuals who attempted suicide in Colorado between 1998 and 2002, residence in a county that offered a minimum safety-net of mental health services significantly reduced the risk of suicidal behavior for at least 1 year after the index attempt. Safety-net services included mental health treatment, crisis treatment, and case management. These results suggest one strategy for prevention of suicidal behavior that could inform state-level health policy development and resource allocation.     

Personality and Defensive Reactions: Fear,Trait Anxiety,and Threat Magnification

ABSTRACT The revised Reinforcement Sensitivity Theory (rRST) of personality ( Gray & McNaughton, 2000 ) maintains that trait individual differences in the operation of defensive systems relate to facets of human personality, most notably anxiety and fear. We investigated this theory in 2 separate studies (total N=270) using a threat scenario research strategy ( Blanchard, Hynd, Minke, Minemoto, & Blanchard, 2001 ). Consistent with rRST, results showed that individuals with high fear questionnaire scores tended to select defensive responses entailing orientation away from threat (e.g., run away) and that fear‐prone individuals also tended to perceive threats as magnified. The extent of this threat magnification mediated the positive association observed between fear and orientation away from threat. Overall, results suggest that interindividual variance in defensive reactions is associated with a variety of existing personality constructs but that further research is required to determine the precise relationship between personality and defensive reactions.     

Spontaneously occurring images and early memories in people with body dysmorphic disorder

A semi‐structured interview assessing the presence and characteristics of spontaneous appearance‐related images was designed and administered. A total of 18 patients with body dysmorphic disorder (BDD) and 18 normal controls took part. The BDD patients were found to have spontaneously occurring appearance‐related images that were significantly more negative, recurrent, and viewed from an observer perspective than control participants. These images were more vivid and detailed and typically involved visual and organic (internal body) sensations. The study also found that BDD images were linked to early stressful memories, and that images were more likely than verbal thoughts to be linked to these memories. Implications for theory and clinical practice are discussed.     

Influence of recollection and plausibility on age-related deficits in associative memory

Age-related declines in associative memory are proposed to result from deficits in older adults’ ability to recollect the past. The present experiment investigated the ability of older adults to compensate for deficits in recollecting the past by using plausibility. Participants studied a list of word pairs that shared category or rhyme relations. To measure the processes used during the recognition memory test, participants provided self-reported explanations for their memory judgements. Older adults relied primarily on plausibility, and the younger adults relied on both plausibility and recollection. Older adults experienced both positive and negative consequences as a result of using a knowledge-based strategy to compensate for their decreased ability to recollect the past. Specifically, they were just as capable as younger adults at recognising previously studied items and correctly rejecting distractors that were inconsistent with the rule provided at study. However, they falsely recognised distractors that were consistent with that rule more often than younger adults.     

Introduction: The Difficult-to-Reach Patient and the Difficult-to-Find Dyad

In this brief introductory paper, Cooper introduces a panel by four analysts who consider their work with particularly challenging patients. This introduction emphasizes the dyadic nature of difficulty in initiating therapeutic work with the patients described here. The author refers to the genre employed in these papers as a less heroic genre than is sometimes used in psychoanalytic papers—a welcome development, as these authors courageously describe the fraught and sometimes failed attempt to engage their patients.