In many educational tests which involve constructed responses, a traditional test score is obtained by adding together item scores obtained through holistic scoring by trained human raters. For example, this practice was used until 2008 in the case of GRE®General Analytical Writing and until 2009 in the case of TOEFL® iBT Writing. With use of natural language processing, it is possible to obtain additional information concerning item responses from computer programs such as e‐rater®. In addition, available information relevant to examinee performance may include scores on related tests. We suggest application of standard results from classical test theory to the available data to obtain best linear predictors of true traditional test scores. In performing such analysis, we require estimation of variances and covariances of measurement errors, a task which can be quite difficult in the case of tests with limited numbers of items and with multiple measurements per item. As a consequence, a new estimation method is suggested based on samples of examinees who have taken an assessment more than once. Such samples are typically not random samples of the general population of examinees, so that we apply statistical adjustment methods to obtain the needed estimated variances and covariances of measurement errors. To examine practical implications of the suggested methods of analysis, applications are made to GRE General Analytical Writing and TOEFL iBT Writing. Results obtained indicate that substantial improvements are possible both in terms of reliability of scoring and in terms of assessment reliability. 相似文献
This study examined the relationship between family context of middle school students on their educational and occupational ideals. Middle school students (N = 2000) responded to questions assessing family location, family structure, parental educational level and family economic status, as well as to the Middle School Students' Ideals Questionnaire. Multivariate analysis of variance indicated that life, educational and occupational ideals of female students and students in lower grades were higher than that of male students and students in higher grades. Regression analysis indicated that paternal education level have a positive association with educational and occupational ideals, but not life ideals, and family economic status have a positive relation to life ideals, but not educational and occupational ideals. Moreover, the interaction between family economic status and family location has a negative association with students' life, educational and occupational ideals. These results suggest that different factors predicted different ideals of adolescents, and that family economic status had a negative moderating effect on the relationship between family location and ideals of students. 相似文献
Body image comparisons on social networking sites (SNS) have been found to be associated with disordered eating among western young women, however, the inner mechanism driving this association is largely unknown. Based on social comparison, sociocultural, and objectification theories, the present study aimed to investigate the association between body image comparisons on SNS and restrained eating, as well as the mediating role of body shame and the moderating roles of body appreciation and body mass index (BMI) among Chinese young adult women. A sample of 567 Chinese college women were recruited to complete a questionnaire assessing body image comparisons on SNS, body shame, body appreciation, restrained eating, and information about weight and height. Results showed that body image comparisons on SNS were positively associated with restrained eating and that body shame significantly mediated this association. Furthermore, body appreciation and BMI each moderated the association between body shame and restrained eating as well as the association between body image comparisons on SNS and restrained eating. These results not only have theoretical implications, but also provide guidance for prevention interventions targeting negative body image and disordered eating among college women.
Journal of Child and Family Studies - Self-control theory proposes that weak emotional bonds with caregivers are key in the lack of self-control development, that in turn increases the likelihood... 相似文献
Prismatic dislocation loops are the primary manifestation of radiation damage in crystals, and contribute to the phenomenon of radiation embrittlement. This undesirable effect, most serious for materials used in high-dose environments such as next-generation fission and future fusion reactors, results from the strong interaction between gliding dislocations, the carriers of plasticity, with the population of radiation-induced prismatic loops. Ferritic–martensitic steels, the most promising candidate materials for future high-dose applications, are based on iron and are known to become highly elastically-anisotropic at the high temperatures (>500°C) at which they must operate. In this article, we develop a novel modelling approach based on anisotropic elasticity theory to predict the shapes of prismatic loops in anisotropic crystals, paying particular attention to the technologically important case of α-iron. The results are compared with transmission electron microscope observations of the damage structure sustained by ultra-high-purity iron irradiated to a dose of approximately two displacements per atom. 相似文献
Individuals’ development is a multilayered affair. The influence of family relationship on personality, such as and focusing on birth order, is subject to influence from other social systems in which the families are situated. The current research examined the relation of birth order to personality and life satisfaction in China, where only children have become the majority because of national policy. Across two studies with both between-family data (N = 1468) and within-family data (N = 171), onlyborns and laterborns surpassed firstborns on openness to experience. In addition, only-child participants were more satisfied with their own lives than were sibling participants, especially laterborns. The results offer new insights into the dynamic relations between ecology and personality. 相似文献
This article aims to summarize the current ethical issues in the field of clinical and counseling psychology and the process of developing professional ethical standards in China. First, through a review of the history of counseling and psychotherapy in China, general background information is provided. Important ethical issues are then discussed based on the results from several empirical studies. Finally, the process of developing the new edition of the Chinese Psychological Society Code of Ethics for Clinical and Counseling Psychology, the main contents as well as the considerations taken into account in the development of this code are presented. 相似文献