Psychology of spaceflight: II. Suggested bases of space motion sickness: perceptual disorientation and elevated stomach pH

Suggested causes of space-motion sickness are inferred from the experiences of a group of astronaut candidates and from the vomit pH values of nonastronauts. Both groups experienced stimulated weightlessness in an airplane.     

The psychosis of metabolic alkalosis

Metabolic alkalosis as an additional etiology for organic psychosis is presented and covered, with theoretical and clinical considerations, including treatment. Illustrative case histories are cited and certain parameters of acid-base equilibrium are described as favorable to the normal awake state, while substantial deviation towards metabolic alkalosis is seen as conducive to psychotic aberration.     

Training class inclusion responding in typically developing children and individuals with autism

In a class inclusion task, a child must respond to stimuli as being involved in two different though hierarchically related categories. This study used a Relational Frame Theory (RFT) paradigm to assess and train this ability in three typically developing preschoolers and three individuals with autism spectrum disorder, all of whom had failed class inclusion tests. For all subjects, relational training successfully established the target repertoire and subsequent testing demonstrated both maintenance and generalization. Limitations and future research directions are discussed.     

Probabilistic Opinion Pooling with Imprecise Probabilities

The question of how the probabilistic opinions of different individuals should be aggregated to form a group opinion is controversial. But one assumption seems to be pretty much common ground: for a group of Bayesians, the representation of group opinion should itself be a unique probability distribution (Madansky [44]; Lehrer and Wagner [34]; McConway Journal of the American Statistical Association, 76(374), 410–414, [45]; Bordley Management Science, 28(10), 1137–1148, [5]; Genest et al. The Annals of Statistics, 487–501, [21]; Genest and Zidek Statistical Science, 114–135, [23]; Mongin Journal of Economic Theory, 66(2), 313–351, [46]; Clemen and Winkler Risk Analysis, 19(2), 187–203, [7]; Dietrich and List [14]; Herzberg Theory and Decision, 1–19, [28]). We argue that this assumption is not always in order. We show how to extend the canonical mathematical framework for pooling to cover pooling with imprecise probabilities (IP) by employing set-valued pooling functions and generalizing common pooling axioms accordingly. As a proof of concept, we then show that one IP construction satisfies a number of central pooling axioms that are not jointly satisfied by any of the standard pooling recipes on pain of triviality. Following Levi (Synthese, 62(1), 3–11, [39]), we also argue that IP models admit of a much better philosophical motivation as a model of rational consensus.     

A Review of Scientific Progress in Flow in Sport and Exercise: Normal Science,Crisis, and a Progressive Shift

Flow is highly relevant and desirable in sport and exercise. Drawing on ideas from iconic philosophers of science—Thomas Kuhn, Karl Popper, and Imre Lakatos—we argue that research in this field has followed a pattern of “normal science.” With a series of accumulating criticisms and “anomalies,” we propose flow research is approaching a “crisis point.” We highlight problems with research based on the traditional nine-dimensions conceptualization of flow. Then, drawing on the work of Popper and Lakatos, we offer theoretical and methodological suggestions for developing a more progressive and practically useful theory for researchers and practitioners.     

A simultaneous test of the relationship between identified psychosocial risk factors and recurrent events in coronary artery disease patients

Psychosocial factors are increasingly recognized as risk indicators for coronary artery disease (CAD) prognosis and they are likely interrelated. The objective of this study is to simultaneously test the relationship between key psychosocial constructs as independent factor scores and recurrent events in CAD patients. There were 1268 CAD outpatients of 97 cardiologists surveyed at two points. Recurrent events or hospitalization in the intervening nine months were reported. Factor analysis of items from the Hospital Anxiety and Depression Scale, Perceived Stress Scale, the ENRICHD Social Support Inventory, and Hostile Attitudes Scale was performed to generate orthogonal factor scores. With adjustment for prognostic variables, logistic regression analysis was performed to examine the relationship between these factor scores and recurrent events. Factor analysis resulted in a six-factor solution: hostility, stress, anxiety, depressive symptoms, support, and resilience. Logistic regression revealed that functional status and anxiety, with a trend for depressive symptoms, were related to experiencing a recurrent event. In this simultaneous test of psychosocial constructs hypothesized to relate to cardiac prognosis, anxiety may be a particularly hazardous psychosocial factor. While replication is warranted, efforts to investigate the potential benefits of screening and to investigate treatments are needed.     

Relieving career anxiety and indecision: the role of undergraduate students’ perceived control and faculty affiliations

As educators and mentors, we often focus on helping undergraduate students make career decisions. However, there is also value in helping alleviate career anxiety and indecision, both of which impede decision-making and are not automatically resolved once a decision is made. This research examined the role of individual differences (age, gender, and perceived control) and learning environment variables (year in university, participation in an orientation program, and faculty affiliations) as predictors of undergraduates’ (n = 844) career-related anxiety and indecision. Traditional individual difference variables like age and gender had little effect whereas perceived control (primary and secondary) predicted lower levels of career anxiety and indecision. The outcomes were not influenced by environmental factors such as year in university or completion of an orientation program, but students’ self-reported faculty affiliation had significant effects. Students who were not affiliated with any specific faculty reported more indecision than students in arts, science, and professional faculties. Likewise, students in professional faculties had less career anxiety and career indecision than arts students. The implications of these results for potential interventions and future research are discussed.