Does Social Drinking Affect Memory in Older Adults?

The present study examines the possible impact of drinking status on objective memory performance in older adults. Subjects were 214 seniors who were participating in a memory research project and had been screened for cognitive impairment. Cognitive measures included the California Verbal Learning Test (CVLT) and the visual reproduction subtest of the Wechsler Memory Scale–Revised. Drinking status classification (i.e., abstinent, past drinker, light drinker, moderate drinker, and problem drinker) was based on the Alcohol Use Disorder Identification Test scores for the past year and report of past drinking history. Very few subjects were classified in the problem group, with the majority abstaining in the past year. Findings indicated that problem drinkers differed from moderate social drinkers on immediate visual memory, and also had a trend for more retroactive interference on the CVLT. There was no evidence that moderate social drinking (average 13.6 standard drinks) had an adverse impact on memory in this population.     

Stress and emotional memory retrieval: effects of sex and cortisol response

In some situations, memory is enhanced by stressful experience, while in others, it is impaired. The specific components of the stress-response that may result in these differing effects remain unclear, and the current study sought to address this knowledge gap. Forty healthy participants (20 women, 20 men) were exposed to emotionally arousing and neutral pictures. Twenty-four hours later, 20 participants underwent a social stressor (speech and math tests), and 20 underwent a control reading task, both followed by a delayed free recall task. Cortisol responders to the stress condition (5 men and 1 woman) showed reduced memory retrieval for both neutral and emotionally arousing pictures. Men and women in the stress condition who did not produce a cortisol response showed increased retrieval of unpleasant pictures compared to controls. The results provide further evidence that cortisol is a primary effector in the stress-induced memory retrieval deficit. At the same time, stress can enhance memory retrieval performance, especially for emotional stimuli, when the cortisol response is absent.     

Insights into a molecular switch that gates sensory neuron synapses during habituation in Aplysia

This review focuses on synaptic depression at sensory neuron-to-motor neuron synapses in the defensive withdrawal circuit of Aplysia as a model system for analysis of molecular mechanisms of sensory gating and habituation. We address the following topics:1. Of various possible mechanisms that might underlie depression at these sensory neuron-to-motor neuron synapses in Aplysia, historically the most widely-accepted explanation has been depletion of the readily releasable pool of vesicles. Depletion is also believed to account for synaptic depression at long interstimulus intervals in a variety of other systems.2. Multiple lines of evidence now indicate that vesicle depletion is not an important contributing mechanism to synaptic depression at Aplysia sensory neuron-to-motor neuron synapses. More generally, it appears that vesicle depletion does not contribute substantially to depression that occurs with those stimulus patterns that are typically used in studying behavioral habituation.3. Recent evidence suggests that at these sensory neuron-to-motor neuron synapses in Aplysia, synaptic depression is mediated by an activity-dependent, but release-independent, switching of individual release sites to a silent state. This switching off of release sites is initiated by Ca²⁺ influx during individual action potentials. We discuss signaling proteins that may be regulated by Ca²⁺ during the silencing of release sites that underlies synaptic depression.4. Bursts of 2–4 action potentials in presynaptic sensory neurons in Aplysia prevent the switching off of release sites via a mechanism called “burst-dependent protection” from synaptic depression.5. This molecular switch may explain the sensory gating that allows animals to discriminate which stimuli are innocuous and appropriate to ignore and which stimuli are more important and should continue to elicit responses.     

Accountability and dignity: Ethical issues in forensic and correctional practice

Our aim in the special issue is to address some of the more abstract and fundamental ethical problems evident in the criminal justice system and to inquire into their significance for those individuals who assess and deliver rehabilitation programs to offenders. In order to provide an appropriate theoretical framework for an investigation of ethical concerns in the forensic and correctional practice domains, we first outline an ethical framework that is intended to help practitioners reflect systematically on their practice [Ward, T., & Syversen, K., (2009). Vulnerable agency and human dignity: An ethical framework for forensic practice. Aggression and Violent Behavior, 14, 94–105]. Second, we explicitly examine the relationship between two normative frameworks evident within the criminal justice system, punishment and rehabilitation, and inquire into their relationship. Finally, we briefly describe each of the papers comprising the special issue.     

A self-determination perspective of strengths use at work: Examining its determinant and performance implications

We investigate the role of strengths use in the workplace by drawing on self-determination theory (SDT) to propose that strengths use at work can yield performance benefits in terms of task performance and discretionary helping, and that the social context, in the form of leader autonomy support, can promote employees’ strengths use. Further, consistent with an interactional psychology perspective, we contend that the relationship between autonomy support and strengths use will be stronger among individuals with strong independent self-construal. We tested the model using matched data from 194 employees and their supervisors and found evidence for the relevance of strengths use at work, even after accounting for the role of intrinsic motivation. In addition to providing practical implications on developing employee strengths use and how to do so, this study advances theory and research on workplace strength use, SDT, and positive organizational behavior.     

High functioning children with autism spectrum disorder: a novel test of multitasking

High functioning children with a diagnosis of autism or Asperger's syndrome (HF-ASD) often experience difficulties organising goal-directed actions in their day-to-day lives, requiring support to schedule daily activities. This study aimed to capture these everyday difficulties experimentally using multitasking, a methodology that taps into the cognitive processes necessary for successful goal-directed activities in everyday life. We investigated multitasking in children with HF-ASD using a novel multitask test, the Battersea Multitask Paradigm. Thirty boys participated in the study, 14 with HF-ASD and 16 typically developing controls, matched for age and IQ. Group differences in multitasking were observed. Participants with HF-ASD were less efficient at planning, attempted fewer tasks, switched inflexibly between tasks and broke performance rules more frequently than controls.     

Help seeking for alcohol problems in a college population

Despite the availability of effective treatments for problem drinkers, only a minority seek professional assistance. The authors investigated the influences on help seeking for alcohol-related difficulties in two separate studies. In Study 1, 59 men and 74 women completed questionnaires regarding their alcohol use, related problems, readiness to change, and help-seeking interest. The authors also developed a measure of stigma related to alcohol help seeking. Problem recognition, anxiety symptoms, and stigma predicted a global rating of help-seeking. Students (22 men and 60 women) participated in Study 2, which incorporated a multi-item measure of help-seeking intentions as well as attitude and personality measures. Positive attitudes, less perceived stigma, and greater self-efficacy increased help seeking. The findings highlight the importance of both approach and avoidance factors that affect help-seeking decisions, and the authors suggest directions for further research.