Intraclass Correlation Associated with Therapists: Estimates and Applications in Planning Psychotherapy Research

It is essential that outcome research permit clear conclusions to be drawn about the efficacy of interventions. The common practice of nesting therapists within conditions can pose important methodological challenges that affect interpretation, particularly if the study is not powered to account for the nested design. An obstacle to the optimal design of these studies is the lack of data about the intraclass correlation coefficient (ICC), which measures the statistical dependencies introduced by nesting. To begin the development of a public database of ICC estimates, the authors investigated ICCs for a variety outcomes reported in 20 psychotherapy outcome studies. The magnitude of the 495 ICC estimates varied widely across measures and studies. The authors provide recommendations regarding how to select and aggregate ICC estimates for power calculations and show how researchers can use ICC estimates to choose the number of patients and therapists that will optimize power. Attention to these recommendations will strengthen the validity of inferences drawn from psychotherapy studies that nest therapists within conditions.     

Measuring anxiety by ordered categorical items in data with subgroup structure: the case of the Hungarian version of the trait anxiety scale of the state-trait anxiety inventory for children (staic-h)

The present study suggests a modelling methodology for examining measurement invariance of ordered categorical item indicators of latent constructs such as anxiety, coping, motives etc., in research settings with few subgroups and a large sample of individuals. The Hungarian version of the Anxiety Trait scale of the State-Trait Anxiety Inventory for Children (STAIC-H) was administered to 605 boys and 975 girls of age 10–15 in 12 schools. A MIMIC model was suggested for examining measurement invariance across subgroups of schools and ages, while a multi-group analysis was recommended for investigating invariance across gender. High degree of invariance across groups was obtained for the Anxiety Trait scale in terms of item factor loadings, item thresholds and item homogeneity with respect to group contrast variables. Based on the diagnostic information obtained by the present methodology, the few item indicators showing non-invariance were discussed with reference to methodological and conceptual considerations.     

Social and Emotional Processes in the Classroom Setting: A Goal Approach

Goals can be defined as cognitive- and as value-related motivational constructs. Consequently, both goal elaboration and personal valuing of goals are emphasized as critical determinants of motivated action. From this perspective, it is argued that goals play an influential role in students' cognitions, and in their social and emotional processes. I explore students' strategies for dealing with potentially stressful classroom circumstances in relation to their goals by examining students' reactions to imagined specific academic stressors, focusing on their emotions, behavior, and goals. Four distinct strategies were defined: strategic flexible action, strategic rigid action, passive behavior, and disorganized behavior. It is suggested that (a) goals play a major role in articulating and integrating behaviors and emotions within a whole strategy, (b) particular combinations of goal characteristics - goal-setting, personal goal valuing, and goal difficulty - are required for successful coping, and (c) both productive behavior and emotional regulation are predicted by specific goal characteristics.     

Frequency and predictability effects in eye fixations for skilled and less-skilled deaf readers

The illiteracy rate in the deaf population has been alarmingly high for several decades, despite the fact that deaf children go through the standard stages of schooling. Much research addressing this issue has focused on word-level processes, but in the recent years, little research has focused on sentence-levels processes. Previous research (Fischler, 1985) investigated word integration within context in college-level deaf and hearing readers in a lexical decision task following incomplete sentences with targets that were congruous or incongruous relative to the preceding context; it was found that deaf readers, as a group, were more dependent on contextual information than their hearing counterparts. The present experiment extended Fischler's results and investigated the relationship between frequency, predictability, and reading skill in skilled hearing, skilled deaf, and less-skilled deaf readers. Results suggest that only less-skilled deaf readers, and not all deaf readers, rely more on contextual cues to boost word processing. Additionally, early effects of frequency and predictability were found for all three groups of readers, without any evidence for an interaction between frequency and predictability.     

Role of expertise and action in motion extrapolation from real road scenes

The tendency of participants to “remember” the stopping point of an event as being farther along in the direction of motion has been a topic of study for about 30 years. The purpose of the present experiment was to test the influence of two factors on motion extrapolation: (1) The involvement of participants in the action, and (2) their expertise in the domain of automobile driving. Participants viewed real driving scenes from the driver's point of view. They were divided into four groups depending upon their involvement in the action (more or less active) and their driving experience (inexperienced or experienced). In order to get half of the participants involved in the driving situation, they had to use a steering wheel to follow the contour of the road. The results showed that both of these factors increased motion extrapolation. The discussion deals with how the interrelationships between real road scenes, expertise, and action-related knowledge affect motion extrapolation.     

Exploring the Validity of the Values-In-Action Inventory of Strengths (VIA-IS) in an African Context

This study explored the validity of the Values-In-Action Inventory of Strengths (VIA-IS) in an African context. A convenience sample of 256 African students completed the VIA-IS in English. The majority of strengths subscales had good reliability coefficients and mean scores comparable to those reported in a Western context. Satisfactory criterion-related validity was established through correlations with other well-being indices. First and second order confirmatory factor analyses only partly supported construct validity. All strengths subscales consisted of more than one factor. The hypothesised six-virtue cluster pattern was partially supported. Exploratory factor analysis suggested the possibility of an emic factor pattern of strengths consisting of 3 components: Within the first factor, Intrapersonal and Relationship Strengths, two clusters are distinguished, namely, Intrapersonal Strengths, and Horizontal and Vertical Relationship Strengths. The second factor was Integrity in Group Context. Thus, the VIA-IS has merit, but is not completely valid in its original form.     

教师工作压力与职业枯竭的关系：职业承诺的调节效应

应用工作压力、职业枯竭和职业承诺问卷对中小学教师2114人进行调查,主要探讨职业承诺对工作压力与职业枯竭关系的调节效应。结果发现：工作压力与职业枯竭的情绪衰竭、非人性化、认知枯竭具有显著正相关,情感承诺、规范承诺与职业枯竭具有显著负相关;教师职业承诺以及所包括的情感承诺、留职承诺、规范承诺对工作压力与职业枯竭关系具有负向调节效应;不同教龄段教师在职业枯竭不同方面存在差异。     

Correspondence between children's and adults' ratings of stimulant-induced changes in ADHD behaviours in a crossover trial with medication-naive children

Correspondence between children's and adults' ratings of changes in ADHD behaviours was investigated in a paediatric ADHD stimulant crossover trial. Thirty-one children completed an ADHD self-report scale each week, and comparisons were made with an ADHD questionnaire completed by adults (combined parent and teacher ratings). Children's and adults' ratings demonstrated good internal consistency, were significantly associated with the assessment of ADHD behaviours in the placebo condition and showed comparable responsiveness to stimulants at the group level. Furthermore, a large and significant correlation was detected between the two sets of informants' ratings of changes from placebo to both methylphenidate and dextroamphetamine high-dosage conditions, but not from placebo to low-dosage conditions. Agreement in the categorization of best stimulant condition for individual children was significant, but modest from a clinical perspective. The results indicate that children's ratings correspond adequately with adults' ratings, and thus appear to be a complementary outcome measure.