Orienting Under Load: Intrinsic Dynamics and Postural Affordances for Visual Perception

Orientation toward one's surroundings is necessary for prospective control of action, and constraints on orienting activity have consequences for animal survival. Physically coupled load is a constraint for humans wearing protective equipment (firefighters, soldiers, etc.). The consequences of load on postural affordances while transitioning to upright stance was used to quantify the impact of different soldier configurations. Eight participants established upright posture in 4 relevant load configurations (5.0 to 79.2 lb). Load affected the accessibility of optical information at a distance as evidenced by increasing downward head angles and reductions in postural coordination. Reductions in the variability of time to establish upright stance with load suggests a loss of functional adaptability. Load asymmetries played a significant role as the most asymmetric configuration (not the heaviest) had the most detrimental effect on postural affordances. Center of Pressure (CoP) dynamics reflected the consequences of asymmetric loading on postural regulation as greater power and fluctuations across frequencies were observed. Physically coupled load induces significant constraints on orienting activity, and load asymmetry contributes significantly to the detrimental effects of protective equipment on action-perception coupling during whole-body movements.     

Self-Actualization of “Paranormals”

A sample of 56 Ss nominated by others as paranormals and self-stated as experiencing paranormal (occult) phenomena, were administered measures purportedly reflected dimensions of the self-actualization concept. Ss reported both their interest in, and experience of, 15 areas of paranormal phenomena. Ss were given the Marlowe-Crown Social Desirability Scale (measuring ego-defensiveness), Shostrom's Self-Actualization Test (POI), and an Aphorism test (designed to measure degree of “expanded awareness”). Ss scores were compared with various normative and experimental group scores for the three tests. Although statistically significant differences were rare, there was usually a trend for paranormals to score in the direction of self-actualization on most measures.     

Reliability of Ratings of Children’s Expressive Reading

This study examined ratings of fourth graders’ oral reading expression. Randomly assigned participants (n = 36) practiced repeated readings using narrative or informational passages for 7 weeks. After this period raters used the Multidimensional Fluency Scale (MFS) on two separate occasions to rate students’ expressive reading of four equivalent passages. Results of this generalizability study showed that a minimum of two and preferably three equivalent passages, two raters, and one rating occasion are recommended to obtain reliable ratings. This research substantiates the reliability of the MFS and demonstrates the importance of raters collaborating and finding texts at students’ independent reading levels.     

Athlete identity and athlete satisfaction: The nonconformity of exclusivity

The goal of this study was to determine if there was a relationship between athletic identity, a relatively stable individual difference, and athlete satisfaction. A second goal was to evaluate the structure of athletic identity to examine potential differences between facets. Analyzing data from 175 NCAA student athletes, results indicated that use of overall athletic identity hid meaningful relationships between this self-identity concept and level of athlete satisfaction. When examined at the facet level, results indicated that athletic social identity and negative affectivity were positively related to athlete satisfaction while the exclusivity facet of athletic identity was negatively related to athlete satisfaction.     

逻辑经验主义与心理学哲学

逻辑经验主义对实验心理学的关注并非只是由于其结果的作用或其态度上的相似性,而且由于(或许是更为重要的)对澄清其概念的共同需要。逻辑经验主义对物理概念的分析是一种哲学成就的范式,而他们在心理学中同样的分析工作也被看做是规范科学的疑难解决方案。在这种范式的背后隐藏着统一科学的哲学理想。围绕经验问题,逻辑经验主义与心理学之间在20世纪30年代出现了大量互动;正是根据这个问题,以及在逻辑经验主义对统一科学的强调的关联中,我们才能很好地理解逻辑经验主义的心理学哲学及其对心理学的影响。以卡尔纳普、费格尔和托曼为最初代表,他们提出完全不同的处理方式,把心理学看做经验科学,就可以得到其他科学同样具有的主体间性,因此,这就使得逻辑经验主义获得了它希望得到的地位。     

The dark side of incremental learning: A model of cumulative semantic interference during lexical access in speech production

Naming a picture of a dog primes the subsequent naming of a picture of a dog (repetition priming) and interferes with the subsequent naming of a picture of a cat (semantic interference). Behavioral studies suggest that these effects derive from persistent changes in the way that words are activated and selected for production, and some have claimed that the findings are only understandable by positing a competitive mechanism for lexical selection. We present a simple model of lexical retrieval in speech production that applies error-driven learning to its lexical activation network. This model naturally produces repetition priming and semantic interference effects. It predicts the major findings from several published experiments, demonstrating that these effects may arise from incremental learning. Furthermore, analysis of the model suggests that competition during lexical selection is not necessary for semantic interference if the learning process is itself competitive.     

Severity of Children’s ADHD Symptoms and Parenting Stress: A Multiple Mediation Model of Self-Regulation

The goal of the current study was to determine the extent to which the perceived self-regulation deficits across behavioral, cognitive, and emotional domains seen in children with ADHD explain the association between the severity of ADHD symptoms and parenting stress. Participants for this study included 80 children (mean age = 10 years, 9 months) with a DSM-IV diagnosis of ADHD confirmed by a comprehensive clinical diagnostic assessment. Parents reported their own stress levels as well as the severity of their children’s ADHD symptoms, aggression, emotional lability, and executive functioning difficulties. Results indicated that the severity of children’s hyperactivity/impulsivity symptoms but not their inattention related to parenting stress. Multiple mediational analyses indicated that the association between hyperactivity/impulsivity and parenting stress was explained by children’s perceived comorbid aggression levels, emotional lability, and executive functioning difficulties. No significant differences in the strength of the mediators were found. The current study provides initial data showing that the perceived impairments in children’s self-regulation across emotional, cognitive, and behavioral domains are what parents report as stressful, not simply the severity of ADHD symptoms. Due to the cross-sectional nature of this study and shared variance from relying solely on parent report, it will be critical for future research to replicate our findings using longitudinal and multi-informant data such as teacher reports and standardized assessments.     

An exploration into the influence of academic and social values, procrastination, and perceived school belongingness on academic performance

The results of a structural equation model showed that a tendency to procrastinate, assessed early in college students’ first term, was positively related to social values, assessed as concerns over social exclusion, but was negatively related to academic task values and grade goal-setting. The results suggest that procrastination may be a partial mediator of the influence of academic and social values on perceived school belongingness. In addition, the tendency to procrastinate had a direct negative relationship with self-regulatory self-efficacy and perceived school belongingness and was positively related to perceived stress near the end of the term. There was also a statistically significant negative total effect of procrastination on performance-approach and mastery-approach goal orientation and end-of-term grade point average (GPA). Statistically significant positive total effects of performance-approach and mastery-approach achievement goal orientations on GPA were found. However, while a statistically significant direct positive effect of performance-approach orientation on GPA was found, a direct relationship between mastery-approach orientation and GPA was not statistically significant.     

Elementary school students with AD/HD: predictors of academic achievement

Academic underachievement frequently is associated with attention-deficit/hyperactivity disorder (AD/HD); however, the role of variables beyond AD/HD symptoms and cognitive mediators is unknown. Further, whether prediction models vary (a) relative to non-AD/HD students, (b) between math and reading, and (c) based on how achievement is defined has not been examined. Multiple measures (e.g., teacher ratings and behavior observations) were examined as predictors for concurrent achievement outcomes (standardized achievement test scores and report card grades) in math and reading in two samples of 1st through 4th grade children (136 with AD/HD, 53 without AD/HD). Teacher perceptions of academic skills were the strongest predictors of achievement test scores for both groups, while academic skills and enablers accounted for reading report card grades in children with AD/HD but not their normal counterparts. Implications of these findings for school-based assessment and intervention for students with AD/HD are discussed.     

Understanding emotional display rules at work and outside of work: The effects of country and gender

This study examined the long-held, but empirically untested assumption that emotional display rules at work are different from more general display rules. We examined whether the effect of context (work vs. non-work) on display rules depended on rater gender, rater country (i.e., Singapore, United States), and discrete emotion (anger, contempt, disgust, fear, sadness, and happiness). Results revealed that display rules at work involved less expressivity of emotion than did display rules outside of work for all six emotions. Further, display rules in Singapore involved less expressivity of anger, sadness, and fear than display rules in the US, with no country differences being observed for the emotions of happiness, contempt, and disgust. These results were qualified by significant country-by-gender interactions for anger, contempt, and disgust, a significant country-by-context interaction for fear, and a three-way interaction (i.e., country-by-gender-by-context) for sadness.