Influence of stimulus amplitude on unintended visuomotor entrainment

Rhythmic limb movements have been shown to spontaneously coordinate with rhythmic environmental stimuli. Previous research has demonstrated how such entrainment depends on the difference between the movement periods of the limb and the stimulus, and on the degree to which the actor visually tracks the stimulus. Here we present an experiment that investigated how stimulus amplitude influences unintended visuomotor entrainment. Participants performed rhythmic forearm movements while visually tracking an oscillating stimulus. The amplitude and period of stimulus motion were manipulated. Larger stimulus amplitudes resulted in stronger entrainment irrespective of how participants visually tracked the movements of the stimulus. Visual tracking, however, did result in increased entrainment for large, but not small, stimulus amplitudes. Collectively, the results indicate that the movement amplitude of environmental stimuli plays a significant role in the emergence of unintended visuomotor entrainment.     

Sampling and Data Collection Methods in Sales Force Research: Issues and Recommendations for Improvement

Samples used in sales force research studies found in JM, JMR, JPSSM, and IMM over a seventeen year period were examined to discover the extent to which sales force sampling has met the issues of covering different industries and types of salespeople, of satisfying technical sampling requirements, and of clearly reporting on sampling methods. Recommendations for improving standards for conducting and reporting sales force sampling methodology in terms of the resources available are offered.     

Trust of an Automatic Ground Collision Avoidance Technology: A Fighter Pilot Perspective

The present study examined the antecedents of trust among operational Air Force fighter pilots for an automatic ground collision avoidance technology. This technology offered a platform with high face validity for studying trust in automation because it is an automatic system currently being used in operations by the Air Force. Pilots (N = 142) responded to an online survey which asked about their attitudes toward the technology and assessed a number of psychological factors. Consistent with prior research on trust in automation, a number of trust antecedents were identified which corresponded to human factors, learned trust factors, and situational factors. Implications for the introduction of novel automatic systems into the military are discussed.     

Rethinking Christian Religious Education in Ghana: History,Challenges and Prospects

This scholarly essay employs an African philosophical and symbolic construct—Sank?fa—to examine religious education in Ghana. Sank?fa implores the need to examine the past in order to understand the present and to plan for the future. In line with this frame, I recount the history of religious education in Ghana, examine the present challenges, and explore new ways of making Christian Religious Education relevant to contemporary challenges in education.     

Coaching preferences of adolescent youths and their parents

Abstract

This study compared preferred coaching styles of children and their parents using the Leadership Scale for Sport (LSS; Chelladurai & Saleh, 1980). The LSS preferred form was revised and then administered to children ranging from 10 to 18 years of age who competed in summer youth sport leagues and to one parent within each family unit (n = 239). A doubly multivariate repeated measure MANOVA revealed a significant multivariate difference for adolescent athletes and their parents on the five subscales of the LSS. Discriminant function and univariate analyses indicated that male and female children and their parents differed on autocratic and democratic behavior and children had a significantly higher score on democratic behavior and social support than did their parents. Parents, coaches, and researchers in youth sports could use the revised LSS to determine children-athletes’ preferences for coaching styles and for developing more effective programs.     

Age Trends in Eidetikers

The entire available population (N = 408) of a primary school in Perth, Western Australia, was tested for eideticism using a slightly modified presentation of the Haber and Haber (1964) procedure. Sixteen eidetikers were found in the age range covered (5–13 years). When classified into four age categories (5–6, 7–8, 9–10, 11–13), the number of eidetikers in relation to noneidetikers showed a statistically significant and systematic decline with increasing age. These results are discussed in relation to their possible significance for a theory of eidetic development.     

Modeling antecedents of university students' study behavior and grade point average

Two prospective surveys tested theory‐based models of university students' study behavior and grade point average (GPA). The theory of planned behavior (TPB) and personality systems interaction (PSI) theory were tested. The TPB fitted the data for self‐reported study but was less useful when applied to GPA. Some support for PSI theory was found although results varied for study behavior verses GPA. In Study 1, an interaction between volitional competency and subjective norm explained unique variation in study behavior controlling for TPB variables and past behavior. In Study 2, implicit attention control had a direct effect on GPA after the TPB variables and past achievement were controlled. Implications for interventions designed to improve tertiary‐level academic achievement are discussed.     

Knowledge of eating disorders among collegiate administrators, coaches, and auxiliary dancers

Knowledge of eating disorders, confidence in knowledge, and attendance of eating disorder educational programs were assessed among NCAA Division I and II university administrators (n = 61), coaches (n = 44), and dancers (n = 53). A questionnaire assessed knowledge in 5 domains: etiology, signs and symptoms, management and treatment, risk factors, and prevention and education. Overall, dancers' knowledge and previous attendance were significantly lower than administrators' and coaches'. There was inconsistency between participants' confidence in answers and the correctness of their answers. Education is necessary for improving knowledge and reducing risky behaviors in auxiliary dancers.     

Behavioral inhibition and triallelic genotyping of the serotonin transporter promoter (5-HTTLPR) polymorphism

To examine the genetic bases of the behavioral inhibition system (BIS) and the behavioral approach system (BAS), we evaluated the association between the BIS, the BAS, and a functional length polymorphism in the promoter of the serotonin transporter gene (5-HTTLPR) in an unscreened sample of undergraduates (N = 211); analyses were conducted using a two-variant (i.e., biallelic) genotyping and three-variant (i.e., triallelic) genotyping of the 5-HTTLPR polymorphism. People with one or two copies of the low-expressing alleles reported stronger endorsement of the BIS than people who were homozygous for the high-expressing alleles; this association was found for triallelic but not biallelic genotyping of the 5-HTTLPR polymorphism. There was no association between the 5-HTTLPR polymorphism and the BAS scales.