Caffeine reduces time-of-day effects on memory performance in older adults

For most older adults, memory performance depends on the time of day, with performance being optimal early in the morning and declining during the late afternoon hours. In the present study, we asked whether this decline could be ameliorated by a simple stimulant, caffeine. Adults over the age of 65 who considered themselves "morning types" were tested twice over an interval of 5 to 11 days, once in the morning and once in the late afternoon. Participants ingested either coffee with caffeine or decaffeinated coffee at both sessions. Participants who ingested decaffeinated coffee showed a significant decline in memory performance from morning to afternoon. In contrast, those who ingested caffeine showed no decline in performance from morning to afternoon. The results suggest that time-of-day effects may be mediated by nonspecific changes in level of arousal.     

Age-related equivalence and deficit in knowledge updating of cue effectiveness

Knowledge updating involves learning about cue effectiveness based on task experience. Priorresearch has yielded inconsistent conclusions regarding age and knowledge updating. To resolve this inconsistency, the authors analyzed the effects of aging within a single paradigm. Participants studied cue-target associates during 2 study-test trials. Cues included rhyme cues and highly effective category cues. On each study-test trial, different items were presented, and participants predicted recall performance, received a cued recall test, and postdicted performance. Knowledge updating was operationalized as an improvement in the accuracy of predictive judgments across trials. An age deficit was evident in improvements in absolute accuracy, whereas age equivalence was evident in relative accuracy. Evidence suggested that deficient inferential processes contributed to the age deficit in knowledge updating.     

Detection thresholds for intensity increments in a single harmonic of synthetic Japanese macaque (Macaca fuscata) monkey coo calls

There is evidence that Japanese macaques (Macaca fuscata) are extremely sensitive to dynamic changes in the relative amplitudes of coo call harmonics during discrimination tests. To verify this evidence using more controlled stimulus configurations, the authors examined threshold sensitivity of macaque monkeys to amplitude increments added to the standard level of coo call harmonics. Psychophysical threshold determination methods paralleled those used previously to determine macaque sensitivity to amplitude increments added to vowel-like stimuli. Variation was detectable although thresholds were elevated relative to those obtained with vowel-like stimuli in another investigation (C. G. Le Prell, A. J. Niemiec, & D. B. Moody, 2001). This elevation was probably a function of natural amplitude modulation in the standard stimuli.     

Psychometrically matched visual-processing tasks in schizophrenia spectrum disorders

Patients with schizophrenia show deficits in visual perception and working memory, but the relationship between these deficits has not been characterized with psychometrically matched tasks. The authors administered 2 visual discrimination and 6 recognition tasks to 43 schizophrenia spectrum patients and 22 nonpsychiatric subjects. When performing difficulty-matched tasks, spectrum subjects showed more severe impairments for motion compared with form processing. When tasks were matched on true score variance, spectrum subjects exhibited worse performance on both form and motion discrimination, and a differential deficit in motion recognition with a short display duration and long interstimulus interval. These results provide evidence of differential deficits in visual processing in schizophrenia that appear to be dependent on the temporal characteristics of the tasks.     

Mindfulness Among Genetic Counselors Is Associated with Increased Empathy and Work Engagement and Decreased Burnout and Compassion Fatigue

Genetic counselors experience high rates of compassion fatigue and an elevated risk for burnout, both of which can negatively impact patient care and retention in the profession. In other healthcare professions, mindfulness training has been successfully used to address similar negative psychological sequelae and to bolster empathy, which is the foundation of our counseling work. We aimed to assess associations between mindfulness and key professional variables, including burnout, compassion fatigue, work engagement, and empathy. Data were collected via an anonymous, online survey that included validated measures of mindfulness and these key professional variables. The survey was completed by 441 genetic counselors involved in direct patient care. Half of the respondents (50.1%) reported engaging in yoga, meditation, and/or breathing exercises. Mindfulness was positively correlated with work engagement (r?=?0.24, p?<?0.001) and empathy (as measured through four subscales: perspective taking (r?=?0.15, p?=?0.002), empathic concern (r?=?0.11, p?=?0.03), fantasy (r?=???0.11, p?=?0.03) and personal distress (r?=???0.15, p?=?0.001)). Mindfulness was negatively correlated with compassion fatigue (r?=???0.48, p?<?0.001) and burnout (r?=???0.50, p?<?0.001). Given these findings, mindfulness training may be a valuable addition to graduate and continuing education for genetic counselors. The integration of mindfulness into the genetic counseling field will likely improve professional morale and well-being, while promoting workforce retention and bolstering the relational and counseling aspects of our clinical work.     

Clinical Cardiovascular Genetic Counselors Take a Leading Role in Team-based Variant Classification

We sought to delineate the genetic test review and interpretation practices of clinical cardiovascular genetic counselors. A one-time anonymous online survey was taken by 46 clinical cardiovascular genetic counselors recruited through the National Society of Genetic Counselors Cardiovascular Special Interest Group. Nearly all (95.7%) gather additional information on variants reported on clinical genetic test reports and most (81.4%) assess the classification of such variants. Clinical cardiovascular genetic counselors typically (81.0%) classify variants in collaboration with cardiologist and/or geneticist colleagues, with the genetic counselor as the team member who is primarily responsible. Variant classification is a relatively recent (mean 3.2 years) addition to practice. Most genetic counselors learned classification skills on the job from clinical and laboratory colleagues. Recent graduates were more likely to have learned this in graduate school (p?<?0.001). Genetic counselors are motivated to take responsibility for the classification of variants because of prior experiences with variant reclassification, inconsistencies between laboratories, and incomplete laboratory reports. They are also driven by a sense of professional duty and their proximity to the clinical context. This practice represents a broadening of the skill set of clinical cardiovascular genetic counselors and a unique expertise that they contribute to the interdisciplinary teams in which they work.     

Interactions of emotion regulation and perceived stress in predicting emerging adults’ subsequent internalizing symptoms

Emotion regulation is consistently linked to subsequent wellbeing, but little research has examined the moderating role of emotion regulation in longitudinal associations between mental health and other relevant factors. This study examines two specific emotion regulation strategies interacting with perceived stress to predict subsequent internalizing symptoms among emerging adults transitioning to college, a population for whom emotion regulation may be particularly important. A sample of 1130 college students provided data at three time points. Results indicated that cognitive reappraisal buffered against negative effects of stress, whereas expressive suppression was an independent risk factor for internalizing symptoms. Findings underscore the importance of emotion regulation, highlighting cognitive reappraisal as a protective factor against stress and further demonstrating the direct negative impacts of expressive suppression.     

The Effects of Choice Between Nonpreferred Foods on the Food Consumption of Individuals with Food Selectivity

Previous research has concluded that presenting individuals with the opportunity to choose is a viable treatment for escape‐maintained behavior. Considering that food refusal behavior has been generally described as avoidant behavior, the present study aimed to evaluate the role of choice between nonpreferred foods on the food consumption and problematic mealtime behavior of two children with food selectivity. Each participant was allowed to choose between four nonpreferred foods in the choice condition and was not allowed to choose in the no‐choice condition. Further, the role of choice as an antecedent manipulation in mediating extinction‐induced responding was evaluated when choice alone was demonstrated to be ineffective in increasing consumption and a nonremoval of the spoon procedure was introduced. Results indicated that providing choices was effective in increasing the food consumption of one participant and was advantageous in decreasing emotional responding when a nonremoval of the spoon procedure was introduced for the second participant. Copyright © 2015 John Wiley & Sons, Ltd.     

Moving beyond pure signal-detection models: comment on Wixted (2007)

The dual-process signal-detection (DPSD) model assumes that recognition memory is based on recollection of qualitative information or on a signal-detection-based familiarity process. The model has proven useful for understanding results from a wide range of memory research, including behavioral, neuropsychological, electrophysiological, and neuroimaging studies. However, a number of concerns have been raised about the model over the years, and it has been suggested that an unequal-variance signal-detection (UVSD) model that incorporates separate recollection and familiarity processes (J. T. Wixted, 2007) may provide an equally good, or even better, account of the data. In this article, the authors show that the results of studies that differentiate these models support the predictions of the DPSD model and indicate that recognition does not reflect the summing of 2 signal-detection processes, as the new UVSD model assumes. In addition, the assumptions of the DPSD model are clarified in order to address some of the common misconceptions about the model. Although important challenges remain, hybrid models such as this provide a more useful framework within which to understand human memory than do pure signal-detection models.     

Determining Public Policy and Resource Allocation Priorities for Mitigating Natural Hazards: A Capabilities-based Approach

This paper proposes a Capabilities-based Approach to guide hazard mitigation efforts. First, a discussion is provided of the criteria that should be met by an adequate framework for formulating public policy and allocating resources. This paper shows why a common decision-aiding tool, Cost-benefit Analysis, fails to fulfill such criteria. A Capabilities-based Approach to hazard mitigation is then presented, drawing on the framework originally developed in the context of development economics and policy. The focus of a Capabilities-based Approach is protecting and promoting the well-being of individuals. Capabilities are dimensions of well-being and specified in terms of functionings. Functionings capture the various things of value an individual does or becomes in his or her life, including being alive, being healthy, and being sheltered. Capabilities refer to the real achievability of specific functionings. In the context of hazard mitigation, from a Capabilities-based Approach, decision- and policy-makers should consider the acceptability and tolerability of risks along with the affectability of hazards when determining policy formulation and resource allocation. Finally, the paper shows how the proposed approach satisfies the required criteria, and overcomes the limitations of Cost-benefit Analysis, while maintaining its strengths.