Effects of state anxiety on performance using a task-switching paradigm: An investigation of attentional control theory

Low- and high-anxious participants performed arithmetical tasks under task-switching or nontask-switching conditions. These tasks were low or high in complexity. The task on each trial was either explicitly cued or not cued. We assumed that demands on attentional control would be greater in the task-switching condition than in the nontask-switching condition, and would be greater with high-complexity tasks than with low-complexity ones. We also assumed that demands on attentional control would be greater when cues were absent rather than present. According to attentional control theory (Eysenck, Derakshan, Santos, & Calvo, 2007), anxiety impairs attentional control processes required to shift attention optimally within and between tasks. We predicted that there would be greater negative effects of high state anxiety in the task-switching condition than in the nontask-switching condition. Our theoretical predictions were supported, suggesting that state anxiety reduces attentional control.     

Structured writing about stressful events: exploring potential psychological mediators of positive health effects.

In a previous study, the authors found that structured writing about stressful events improved symptomatology in 112 patients with rheumatoid arthritis and asthma relative to patients who did not write (J. Smyth, A. Stone, A. Hurewitz, & A. Kaell, 1999). However, little is currently known about the pathways from the intervention to alterations in outcomes. In addition to measuring symptom outcomes after the intervention in the previous study, the authors monitored perceived stress, quality of sleep, affect, substance use, and medication use on a momentary basis for the 7 days prior to writing, during the 3 intervention days, and for the 14 days following the intervention (N = 105). These variables were tested in a secondary data analysis to determine whether they mediated the effects observed in the J. Smyth, A. Stone, et al. study. No evidence was found supporting mediation, and the mechanism underlying structured writing about stressful events remains unknown.     

Aging and implicit learning: explorations in contextual cuing

In contextual cuing, faster responses are made to repeated displays containing context-target associations than to novel displays without such covariances. We report that healthy older adults showed learning impairments in contextual cuing when compared with younger adults. The display properties in the task were altered to artificially increase younger adults' response times to match those of older adults and to produce faster responses in older participants; however, younger participants' learning remained intact, whereas older participants continued to show impairments under these conditions. These results suggest that older adults have intrinsic deficits in contextual cuing that cannot be attributed to their slower overall response speed.     

Heroism and history in Merleau-Ponty’s existential phenomenology

Whereas Phenomenology of Perception concludes with a puzzling turn to “heroism,” this article examines the short essay “Man, the Hero” as a source of insight into Merleau-Ponty’s thought in the early postwar period. In this essay, Merleau-Ponty presented a conception of heroism through which he expressed the attitude toward post-Hegelian philosophy of history that underwrote his efforts to reform Marxism along existential lines. Analyzing this conception of heroism by unpacking the implicit contrasts with Kojève, Aron, Caillois, and Bataille, I show that its philosophical rationale was to supply experiential evidence attesting to the latent presence of human universality. It is a mythic device intended to animate the faith necessary for Marxist politics by showing that universal sociality is possible, and that the historically transformative praxis needed to realize it does not imply sacrifice. This sheds considerable light on Merleau-Ponty’s early postwar political thought. But inasmuch as the latter cannot be severed from his broader philosophical concerns, the prospect is raised that his entire phenomenological project in the early postwar period rested on a myth. Not necessarily a bad myth, but a myth nonetheless.     

Subjective Well-Being of Beijing Taxi Drivers

This study investigates subjective well-being among a sample of Beijing taxi drivers in the lead up to the 2008 Beijing Olympic Games using the Personal Wellbeing Index (PWI). The specific aims of this study are (a) investigate the psychometric properties of the PWI in this unique population; (b) ascertain whether Beijing taxi drivers are satisfied with their lives; and (c) examine whether the responses to the PWI from participants falls within the narrow range predicted by the ‘Theory of Subjective Wellbeing Homeostasis’. The PWI demonstrated good psychometric properties and was consistent with previous studies for Western and non-Western samples. The data revealed a moderate level of subjective well-being (PWI score = 61.1). While Beijing taxi drivers work long hours for low wages, the PWI was nonetheless within the normative range predicted for Chinese societies by the ‘Theory of Subjective Wellbeing Homeostasis’. The results suggest that the homeostatic mechanism is fairly resilient, even when the individual leads relatively a hard life based on objective indicators. Specifically, for Beijing taxi drivers, it appears that external, buffers such as personal relationships and feeling part of the community, act to assist the homeostatic system.     

A derived transfer of simple discrimination and self-reported arousal functions in spider fearful and non-spider-fearful participants

Two experiments investigated the derived transfer of functions through equivalence relations established using a stimulus pairing observation procedure. In Experiment 1, participants were trained on a simple discrimination (A1+/A2-) and then a stimulus pairing observation procedure was used to establish 4 stimulus pairings (A1-B1, A2-B2, B1-C1, B2-C2). Subsequently, a transfer of the simple discrimination functions through equivalence relations was observed (e.g., C1+/C2-). These procedures were modified in Experiment 2, which demonstrated that spider-fearful and non-spider-fearful participants show differing levels of a transfer of self-reported arousal functions for stimuli used in equivalence relations with video-based material depicting scenes with spiders. The results demonstrate that the stimulus pairing observation procedure provides a viable alternative to matching-to-sample, and also offer tentative support for a derived-relations model of the acquisition of anxiety responses in at least one sub-clinical population.     

Developmental coordination impairments in adulthood

The aim of this study was to extend the understanding of Developmental Coordination Disorder (DCD) into adulthood. We recruited 19 adults aged between 18 and 65 who had received diagnoses of DCD or dyspraxia or who self-reported as having motor impairments consistent with a history of DCD, together with age- and gender-matched controls. Participants were given tests of manual dexterity, handwriting, construction, obstacle avoidance, dynamic balance, static balance, dual task performance, ball skills, reaction time, movement time and sequencing. As a group, adults with DCD performed more poorly than controls across all tasks. Slowness and variability of movement was a pervasive feature of their performance and many individuals had considerable problems with sequencing and with dual task performance. A discriminant function analysis conducted using six performance measures correctly classified participants as car drivers or non-drivers. Adults do retain motor difficulties and these can exclude them from important activities of daily living.     

Daily Mood Variability: Form of Diurnal Patterns and Determinants of Diurnal Patterns

Mood and affect are often assessed in psychological research without regard for the potential influence of time of day or other environmental factors. This study examined the determinants of daily mood variability. Ninety-four subjects completed a diary every 15 min for 1 day, and subjects' moods, activities, and locations were assessed. Diurnal cycles were found for several moods (e.g., happy, tired), activities (e.g., discourse, thinking), and locations (e.g., home, work). Diurnal cycles in most moods were strongly associated with activities and location, yet diurnal cycles of some moods (rushed, sad, and tired) were not dependent on these factors. These findings have implications for mood assessment: Mood assessment performed only at particular times of day, or those relying on point assessment, may be influenced by time of day and by the activities and location of the subject.     

The effect of visual guidance on the acquisition of a simple motor task

Subjects were required to learn to depress a bar using concurrent visual feedback, which was removed for test. The overshooting found in test is attributed to visual dominance of the feedback traces; the way in which it occurs is not clear, since the reduction of the ratio of movement to display gain from 1:15 to 1:7.5 did not reduce overshooting. Performance improved after extended practice, but the direction of error remained positive. The results are discussed in terms of motor programming and feedback control of movement and are interpreted as evidence against Adams' (1971) two-trace theory.     

Attention to visual feedback in motor learning

Visual guidance and movement to a stop were used to train subjects to make a simple movement without experiencing error in practice. Movement to a stop led to test performance as accurate as that after training with KR, but visual guidance did not. If a continuous visual cue as well as a stop were present during practice, subjects also performed less accurately, although they did not need to attend to the visual cue. All types of training were better than no training at all. Results are discussed in terms of the role of visual feedback in the development and assessment of programs for movement.