A glimpse is not a glimpse: Differential processing of flashed scene previews leads to differential target search benefits

The question of whether words can be identified without spatial attention has been a topic of considerable interest over the last five and a half decades, but the literature has yielded mixed conclusions. The present experiments manipulated the proportion of valid trials (the proportion of trials in which a cue appeared in the same location as the upcoming target word) so as to encourage distributed (50% valid cues; Experiments 1 and 3) or focused (100% valid cues; Experiments 2 and 4) spatial attention in a priming-type paradigm. Participants read aloud a target word, and the impact of a simultaneously presented distractor word was assessed. Semantic and orthographic priming effects were present when conditions promoted distributed spatial attention but absent when conditions promoted focused spatial attention. In contrast, Experiment 5 yielded a distractor word effect in the 100% valid cue condition when subjects identified a colour (Stroop task). We take these results to suggest that (1) spatial attention is a necessary preliminary to visual word recognition and (2) examining the role of spatial attention in the context of the Stroop task may have few implications for basic processes in reading because colour processing makes fewer demands on spatial attention than does visual word recognition.     

Regulatory fit at work: gravitational effects and associations with employee well-being

ABSTRACT

Using a task approach, this study examined the extent to which employee regulatory focus would “gravitate” employees towards promotion- versus prevention-oriented tasks within their jobs, and whether a subsequent regulatory fit/misfit would be associated with their well-being (i.e., mental health and job satisfaction). In a pre-study among 37 employees, we determined the regulatory focus of work tasks from the Netherlands Skill Survey, which are relevant to the general working population, resulting in a selection of 7 promotion and 11 prevention tasks. For our main study, we used the Dutch Longitudinal Internet Studies for the Social Sciences (LISS) panel and collected data from 1,606 respondents. In 2011, we collected respondents’ regulatory focus and in 2012, we collected their work tasks and well-being. Promotion-oriented employees considered both promotion and prevention tasks to be highly relevant in their jobs, and this relevance was associated with their mental health. Prevention-oriented employees, however, did not respond to the relevance of promotion or prevention tasks and generally reported lower well-being, irrespective of the regulatory focus of their tasks. We tentatively conclude that promotion focus gravitates employees towards job with a richer task content, containing both promotion and prevention tasks.     

Theoretical underpinnings of a need-supportive intervention to address sustained healthy lifestyle changes in overweight and obese adolescents

ObjectivesRecent figures indicate that nearly a quarter of Australian adolescents are overweight or obese. Despite the well-established role of physical activity and healthy eating in reducing prevalence of obesity, there remains a lack of effective interventions that promote sustained behavior engagement. This paper aims to describe the theory-based integration and implementation of self-determination theory and goal setting theory in a family-based lifestyle intervention. Although these theories have been shown to independently predict motivation for behavior, a limited number of studies have described behavior-change techniques at a level to allow for effective evaluation and replication, and no studies have combined the theories in a healthy lifestyle behavior intervention.MethodsBehavior change techniques and the associated change mediators are described in relation to need-supportive environments provided by instructors and extended to parents in the home environment. Methods for motivating and promoting sustained engagement in adolescent physical activity and healthy eating and parent behaviors to support these lifestyle changes are discussed within the context of need-satisfaction and goal setting.ConclusionsThis study will contribute to understanding processes for developing and implementing behavior-change techniques based on the integration of two theories of motivation. Future interventions aimed at promoting maintenance of physical activity and healthy eating behaviors in overweight and obese adolescents will benefit by being informed of which techniques are effective at enhancing motivation within the intervention context and home environment.     

Health and Care Related Risk Factors for Suicide Among Nursing Home Residents: A Data Linkage Study

This study aimed to examine associations between health status and care needs of nursing home residents and risk of death from suicide compared to other causes through a retrospective data linkage cohort study examining nursing home resident deaths in Australia between 2000 and 2013. Data linkage was performed between aged care assessment tools—Resident Classification System and Aged Care Funding Instrument—and the National Coronial Information System. A competing risks survival analysis was performed to determine the association between care assessment variables (activities of daily living (ADL), behavior, and complex health care) and the risk of death from suicide and any other cause. Of the 146 nursing home residents who died from suicide, 130 (89%) were matched to their assessment data, with comparable information available for 95 residents (65%). Residents who required high levels of care with ADL, physical health care, and cognitive and behavioral issues had a higher risk of dying from all other causes, yet lower risk of dying from suicide. The study findings demonstrate the feasibility and value of linking these two data sets; highlight a need for improved data collection processes; and support a person‐centered care approach for prevention of suicide among nursing home residents.     

Stress and Chronic Illness: the Case of Diabetes

Globally, Type 2 Diabetes Mellitus (T2DM) is one of the most prevalent chronic illnesses. Managing T2DM is a major challenge now affecting the lives of around 200 million people. Even when medication, diet, and physical activity regimens are maintained, blood sugar levels might not be effectively controlled because stress triggers the release of sugar into the blood. This makes the management of stress an important adjunct to the treatment of T2DM. Stress includes both life stress, the major issues that people face in their lives, such as job loss, divorce, or death of a loved one, and daily hassles, smaller everyday problems, such as deadlines for work, traffic hold-ups, or family disagreements. The stress levels created by these events are exacerbated by the stress created by the demands of managing diabetes. In this paper, we first examine the evidence for the relationship between stress and poor blood sugar control in people with T2DM. Then, we consider research that has examined the impact of various stress management strategies on blood sugar level. Finally, we discuss some promising psychological techniques for managing stress that could be helpful for people with diabetes or pre-diabetes. We note the double benefit of physical activity, which directly assists in the metabolism of sugar from the blood and indirectly reduces acute stress and chronic stress reactivity, thus providing a buffer against the effects of stress for people with T2DM.     

Insulin receptor substrate 2 is a negative regulator of memory formation

Insulin has been shown to impact on learning and memory in both humans and animals, but the downstream signaling mechanisms involved are poorly characterized. Insulin receptor substrate-2 (Irs2) is an adaptor protein that couples activation of insulin- and insulin-like growth factor-1 receptors to downstream signaling pathways. Here, we have deleted Irs2, either in the whole brain or selectively in the forebrain, using the nestin Cre- or D6 Cre-deleter mouse lines, respectively. We show that brain- and forebrain-specific Irs2 knockout mice have enhanced hippocampal spatial reference memory. Furthermore, NesCreIrs2KO mice have enhanced spatial working memory and contextual- and cued-fear memory. Deletion of Irs2 in the brain also increases PSD-95 expression and the density of dendritic spines in hippocampal area CA1, possibly reflecting an increase in the number of excitatory synapses per neuron in the hippocampus that can become activated during memory formation. This increase in activated excitatory synapses might underlie the improved hippocampal memory formation observed in NesCreIrs2KO mice. Overall, these results suggest that Irs2 acts as a negative regulator on memory formation by restricting dendritic spine generation.     

Response Interruption and Differential Reinforcement of Alternative Behavior for the Treatment of Pica

Pica displayed by two individuals with autism was decreased by a treatment involving differential reinforcement and response interruption that altered the chain of behavior involved in pica (i.e., picking up items and placing them in the mouth). The treatment involved establishing prompts to ‘clean‐up’ as a new discriminative stimulus (SD) for picking up items from the floor; and holding potential pica items was established as an SD for discarding those items in a trash receptacle, putting them away, or using them appropriately. After demonstrating the effectiveness of the treatment in an analog setting, the treatment package was systematically generalized to community settings. Copyright © 2011 John Wiley & Sons, Ltd.     

Differential acetylcholine release in the prefrontal cortex and hippocampus during pavlovian trace and delay conditioning

Pavlovian trace conditioning critically depends on the medial prefrontal cortex (mPFC) and hippocampus (HPC), whereas delay conditioning does not depend on these brain structures. Given that the cholinergic basal forebrain system modulates activity in both the mPFC and HPC, it was reasoned that the level of acetylcholine (ACh) release in these regions would show distinct profiles during testing in trace and delay conditioning paradigms. To test this assumption, microdialysis probes were implanted unilaterally into the mPFC and HPC of rats that were pre-trained in appetitive trace and delay conditioning paradigms using different conditional stimuli in the two tasks. On the day of microdialysis testing, dialysate samples were collected during a quiet baseline interval before trials were initiated, and again during performance in separate blocks of trace and delay conditioning trials in each animal. ACh levels were quantified using high-performance liquid chromatography and electrochemical detection techniques. Consistent with our hypothesis, results showed that ACh release in the mPFC was greater during trace conditioning than during delay conditioning. The level of ACh released during trace conditioning in the HPC was also greater than the levels observed during delay conditioning. While ACh efflux in both the mPFC and HPC selectively increased during trace conditioning, ACh levels in the mPFC during trace conditioning testing showed the greatest increases observed. These results demonstrate a dissociation in cholinergic activation of the mPFC and HPC during performance in trace but not delay appetitive conditioning, where this cholinergic activity may contribute to attentional mechanisms, adaptive response timing, or memory consolidation necessary for successful trace conditioning.     

A comparison of two flash-card methods for improving sight-word reading

Flash cards have been shown to be useful for teaching sight-word reading. To date, the most effective flash-card instruction method is incremental rehearsal (IR). This method involves the instructor interspersing unknown stimulus items into the presentation of known stimulus items. In this study, we compared IR to a modified IR procedure-strategic incremental rehearsal (SIR)-to determine whether the effects of IR might be improved by incorporating variables likely to increase word acquisition. These included increased opportunities to respond to unknown stimuli, using learner responding as a basis for changing instructional items, and systematic prompting methods. An A-B-A-B design was used to compare the effects of IR and SIR for increasing sight-word reading with 4 elementary school students. Results indicated that students read more words correctly with SIR than with IR. In addition, similar patterns of responding were seen at a 2-week follow-up.