Validation of a Behavioral Approach for Measuring Saccades in Parkinson's Disease

Speed and control of saccades are related to disease progression and cognitive functioning in Parkinson's disease (PD). Traditional eye-tracking complexities encumber application for individual evaluations and clinical trials. The authors examined psychometric properties of standalone tasks for reflexive prosaccade latency, volitional saccade initiation, and saccade inhibition (antisaccade) in a heterogeneous sample of 65 PD patients. Demographics had minimal impact on task performance. Thirty-day test–retest reliability estimates for behavioral tasks were acceptable and similar to traditional eye tracking. Behavioral tasks demonstrated concurrent validity with traditional eye-tracking measures; discriminant validity was less clear. Saccade initiation and inhibition discriminated PD patients with cognitive impairment. The present findings support further development and use of the behavioral tasks for assessing latency and control of saccades in PD.     

Academic self-confidence effects on test anxiety among Nigerian university students

The study investigated academic self-confidence effects on test anxiety indicators of performance impairment and intrusive worry. Respondents were 206 Nigerian undergraduate students (mean age = 20.29, SD = 2. 22; female = 43.2%). The students took the Westside Test Anxiety Scale (Driscoll, 2004) and the Academic Self-confidence Scale (Jones, 2001). Data were analysed to predict performance impairment and intrusive worry from academic self-confidence, taking into account students’ year of study and gender. Results suggest that academic self-confidence influenced both performance impairment and intrusive worry dimensions of test anxiety. Students who were high in academic self-confidence reported lower performance impairment or intrusive worry. Also, first year students reported higher intrusive worry than those in second, third, or fourth year of study. High manifestation of academic self-confidence is an asset for coping with test anxiety.     

“Finding Beauty in Everyday Life”: A Photo‐Elicitation Study of Play Across the Life Span

Play is part of people's lives. Across the life span, play is viewed as central to healthy growth and development, although how individuals play and what play means to them changes with different stages of life. In this qualitative study using photo elicitation, children, college students, and retirees photographed 9 play concepts (connection, creativity, discovery, freedom, fun, growth, inner self, risk, and play as an overarching concept). The thematic analysis showed convergent (each theme within the concepts of discovery, freedom, growth, inner self, and play were represented by all groups) and divergent (within the concepts of connection, creativity, fun, and risk) conceptualizations of play concepts across the life span. Implications for working with all groups are also discussed.     

多维计算机化自适应测验选题策略的开发及比较

本研究提出一种新的多维计算机化自适应测验(MCAT)选题策略,并将现有及本研究新提出的MCAT选题策略归纳为三类进行了较为系统全面的Monte Carlo模拟实验比较。结果表明:A-优化方法、后验期望KL信息方法 (KB)和本文提出的修正的连续熵方法 (MCEM)在各自类别中估计精度最高;结合题库安全性来看,MCEM综合表现最好。     

Superior fluid intelligence in children with Asperger's disorder

Asperger's disorder is one of autistic spectrum disorders; sharing clinical features with autism, but without developmental delay in language acquisition. There have been some studies of intellectual functioning in autism so far, but very few in Asperger's disorder. In the present study, we investigated abstract reasoning ability, whose form of intelligence has been labeled fluid intelligence in the theory of Cattell [Cattell, R. B. (1963). Theory of fluid and crystallized intelligence: A critical experiment. Journal of Educational Psychology, 54, 1-22.], in children with Asperger's disorder. A test of fluid intelligence, the Raven's Standard Progressive Matrices Test, was administered to 17 children with Asperger's disorder and 17 age-, gender-, and FIQ-matched normal children. The results showed that children with Asperger's disorder outperformed on the test of fluid reasoning than typically developing children. We suggest that individuals with Asperger's disorder have higher fluid reasoning ability than normal individuals, highlighting superior fluid intelligence.     

Acetylcholine esterase activity and behavioral response in hypoxia induced neonatal rats: effect of glucose, oxygen and epinephrine supplementation

Brain damage due to an episode of hypoxia remains a major problem in infants causing deficit in motor and sensory function. Hypoxia leads to neuronal functional failure, cerebral palsy and neuro-developmental delay with characteristic biochemical and molecular alterations resulting in permanent or transitory neurological sequelae or even death. During neonatal hypoxia, traditional resuscitation practices include the routine administration of 100% oxygen, epinephrine and glucose. In the present study, we assessed the changes in the cholinergic system by measuring the acetylcholinesterase (AChE) activity and the behavioral responses shown by hypoxia induced neonatal rats and hypoxic rats supplemented with glucose, oxygen and epinephrine using elevated plus-maze and open-field test. The acetylcholine esterase enzyme activity showed a significant decrease in cerebral cortex, whereas it increased significantly in the muscle of experimental rats when compared to control. Hypoxic rats supplemented with glucose, glucose and oxygen showed a reversal to the control status. Behavioral studies were carried out in experimental rats with elevated plus-maze test and open-field test. Hypolocomotion and anxiogenic behavioral responses were observed in all experimental rats when compared to control, hypoxic rats supplemented with glucose, glucose and oxygen. Thus, our results suggest that brain damage due to hypoxia, oxygen and epinephrine supplementation in the neonatal rats cause acetylcholine-neuromuscular-defect leading to hypolocomotion and anxiogenic behavioral response. Glucose and glucose with oxygen supplementation to hypoxic neonates protect the brain damage for a better functional status in the later life.     

信息加工效率与阅读的关系研究

对23名大学生进行知觉广度、记忆广度和阅读理解的多项测验,探求知觉、记忆加工效率与不同语言阅读成绩和阅读眼动特性之间的关系。结果发现：低水平的视觉符号方向信号知觉广度与阅读不存在明显的关系,从眼跳幅度指标上反映出右侧知觉广度大的被试对第二语言加工难度更为敏感。短时记忆和工作记忆能力对阅读的影响主要反映在眼跳幅度方面,与单个注视点获取的信息量有关,但与课文理解水平的关系不明显。短时记忆能力强的被试在眼跳幅度上以及第二语言言语工作记忆弱的被试在注视时间上均出现语言差异效应。     

Factors affecting responses to Likert type questionnaires: introduction of the ImpExp,a new comprehensive model

The major purpose of this paper is to propose a comprehensive model describing the effects of response sets within the theory framework of the stages of responding to questionnaires, and taking into account the effects of collectivist and individualist attributes within cross-cultural contexts. The introduction of this model aims to provide a construct that may help minimize biases in questionnaire-based research as well as providing new directions for theoretical and empirical research in the field of response sets.

初中生诚实性测验中社会赞许反应研究

运用马洛-克罗恩社会赞许量表(MCSD)和儿童社会期望量表(CSD),采用3×3设计,测查了高、中、低三类赞许动机水平的246名初中生在高、中、低三种不同赞许情境下完成诚实性测验的差异,以考察社会赞许性反应。结果显示低赞许动机被试比高赞许动机被试整体上更诚实,他们在三种情境下的诚实性行为差异不显著;高赞许动机水平被试在三种赞许情境下诚实性行为差异显著。说明前者更多依从自己内部判断,后者更多依从外界评价。