The effect of 30% oxygen on visuospatial performance and brain activation: an fMRI study

This study aimed to investigate the hypothesis that administration of the air with 30% oxygen compared with normal air (21% oxygen) enhances cognitive functioning through increased activation in the brain. A visuospatial task was presented while brain images were scanned by a 3 T fMRI system. The results showed that there was an improvement in performance and also increased activation in several brain areas in the higher oxygen condition. These results suggest that a higher concentration of breathed oxygen increases saturation of blood oxygen in the brain and facilitates performance.     

Young adult drivers' sensitivity to changes in speed and driving mode in a simple vehicle simulator

The study was done to check replication of changes in sensitivity with a simple simulator as had been obtained in an experiment using the real road situation. Another purpose was to control simulator sickness which could have confounded data from testing with a simulator or in actual driving. Sensitivity of the drivers (72 healthy young adults, M age = 24 yr., SD = 5) while performing the driving task was measured in terms of subjective ratings of simulator sickness and affect, and physiological measures (i.e., galvanic skin responses and skin temperature) at different driving speeds and in driving mode conditions, using a simple vehicle simulator. Analysis showed measures of drivers' state, including simulator sickness, physiological indices, and subjective reports, increased with driving speed (30 --> 90 -->120 km/hr.) and driving mode change from the regular speed to sudden increasing to sudden decreasing speeds. Particularly, the results suggest that the increased autonomic nervous activation induces increase of rated simulator sickness. Based upon the same tendency in change of the simulator sickness and physiological state with driving speed and driving mode conditions, it was concluded that, if the results obtained from the simulator experiment can be generalized to the real situation, the simulator sickness must be considered a confounding factor. The results also suggest that the changes in human sensitivity are dependent upon aspects related to speed of a vehicle and driving mode.     

Torque levels, subjective discomfort, and muscle activity associated with four commercially available screwdrivers under static and dynamic work conditions

This study evaluated screwdrivers with different handle designs and blade lengths. 10 men and 10 women voluntarily participated. A repeated-measures experiment design was employed. The three independent factors were sex of user, handle (four types), and blade length (130, 170, and 210 mm). The dependent measures were the maximum supination torque under a static task and the %MVC of EMG responses in biceps brachii and flexor digitorum, and a discomfort rating for the upper extremity under the dynamic task. Analysis showed that the in-line screwdriver with the combined characteristics of large handle diameter (3.8-4.1 cm), smooth rubber covering handle surface, triangular (or circular) shape, and adequate handle length (11 cm) had the greatest supination torque and a smaller discomfort rating than the screwdriver with the pistol-grip handle. Blade length was not significantly related to any dependent measure.     

The effect of price discounts on green consumerism behavioral intentions

Green consumerism encourages consumers to demonstrate environmentally friendly behavior for protecting the environment and health of human beings. For example, if consumers wish to purchase take‐out beverages, they are encouraged to bring their own cups or water bottles rather than use disposable cups. This study, through 2 experiments, discussed the use of price discounts for encouraging green consumerism behavioral intentions. Experiment 1 examined the relationships among a green promotion setting, perceived nonmonetary and monetary sacrifice, and purchase intention toward the list price. The results of hierarchical regression models based on 120 valid questionnaires showed that perceived nonmonetary sacrifice fully mediated the relationship between a green promotion setting and the purchase intention toward the list price. Experiment 2 investigated the relationship between price discount levels and frames and a green or general promotion setting used by take‐out beverage shops. The results of the analysis of variance based on 900 valid questionnaires demonstrated that (i) the variation in consumer purchase intention in response to green consumerism promotion was lower than that in response to general promotion; (ii) the price discount threshold used in green consumerism promotion was 20%, which was higher than that in a general promotion setting; and (iii) consumers preferred a percentage discount offered during green consumerism promotion; however, they preferred a discount with a specific dollar amount in a general promotion setting. These results provide suggestions for improving green marketing and green consumerism. Copyright © 2016 John Wiley & Sons, Ltd.     

Ethnic Identity and Discrimination: An Exploration of the Rejection-Identification Model in Arab American Adolescents

Research examining the rejection-identification model of ethnic identity in Arab American adolescents is scarce. This exploratory study investigates various factors in relation to a sample of 60 Arab American adolescents’ (aged 12–18 years) ethnic identity including discrimination and academic and global self-concepts. Ethnic identity was measured using the Multigroup Ethnic Identity Measure, which is composed of two factors including Affirmation/Belonging and Ethnic Search. The Self-Perception Profile for Adolescents was used to measure academic and global self-concepts. In addition, the lead author developed a questionnaire asking participants to self-report whether either they or another Arab student they knew had been treated badly or differently because of their ethnicity. Discrimination experience and Affirmation/Belonging were significant predictors of scholastic competence, while Affirmation/Belonging was the sole significant predictor in Global Self-Worth. High levels of ethnic identity in the area of Affirmation/Belonging seemed to play a protective role in global self-concept in the face of discrimination. Implications and directions for future research are discussed.     

Anger in response to challenge: children’s emotion socialization predicts approach versus avoidance

Negative emotion is typically associated with avoidance behavior; however, recent advances in the adult literature show that unlike some emotions (sadness, shame), anger predicts both approach and avoidance. Here we propose that socialization to suppress anger will play a role in whether children who express anger respond to a performance challenge with approach or avoidance. Children (N = 79; M _age  = 11.4 years) reported perceptions of parental use of positive conditional regard (PCR) to socialize anger suppression and worked on four unsolvable puzzles. We measured change in verbalized puzzle-solving strategies during failure, and coded emotion expression on the final puzzle. We examined whether negative emotion type (shame/sadness vs. anger) and PCR for anger predicted change in strategy use, and whether the association between level of PCR for anger and approach-avoidance (change in strategy use) depended on type of negative emotion expressed. Neither emotion expression nor level of PCR anger predicted strategy use; however, type of negative emotion moderated the association between PCR anger and change in strategy use, controlling for NCR anger. For children who displayed anger, low PCR was associated with increased strategy use, and high PCR was associated with decreased strategy use. We discuss the role of emotion socialization in shaping approach and avoidance motivation.     

Revisiting a contrasting thought between Descartes and Spinoza in the light of psychotherapy

The aim of this paper is to revisit one contrasting thought on the notion cause and effect between Descartes and Spinoza. This debate will be re-examined in the light of clients' knowledge of the cause and effect of their psychological distress, prior to seeking psychotherapy and in the process of receiving treatments. The treatment approach chosen for this paper is psychodynamic. This paper also aims to demonstrate how psychoterapeutic ideas can contribute to philosophical debates