To further advance assessment of patient-reported outcomes, the European Organisation of Research and Treatment of Cancer (EORTC) Quality of Life Group has developed computerized adaptive test (CAT) versions of all EORTC Quality of Life Core Questionnaire (QLQ-C30) scales/items. The aim of this study was to develop and evaluate an item bank for CAT measurement of insomnia (CAT-SL). In line with the EORTC guidelines, the developmental process comprised four phases: (I) defining the concept insomnia and literature search, (II) selection and formulation of new items, (III) pre-testing and (IV) field-testing, including psychometric analyses of the final item bank. In phase I, the literature search identified 155 items that were compatible with our conceptualisation of insomnia, including both quantity and quality of sleep. In phase II, following a multistep-approach, this number was reduced to 15 candidate items. Pre-testing of these items in cancer patients (phase III) resulted in an item list of 14 items, which were field-tested among 1094 patients in phase IV. Psychometric evaluations showed that eight items could be retained in a unidimensional model. The final item bank yielded greater measurement precision than the original QLQ-C30 insomnia item. It was estimated that administering two or more items from the insomnia item bank with CAT results in a saving in sample size between approximately 15–25%. The 8-item EORTC CAT-SL item bank facilitates precise and efficient measurement of insomnia as part of the EORTC CAT system of health-related quality life assessment in both clinical research and practice.
Mexican mothers have an important role in adolescent sexuality; however, they report multiple barriers to parent–child sex communication, which may impact adolescent sexual behaviour. This cross-sectional study examines whether adolescent perceptions of maternal barriers to communication are associated with adolescent sexual behaviour frequency indirectly through its association with maternal monitoring, and whether these associations differ by age and gender. Mexican adolescents (N = 1433), ages 12–19 (53% girls), completed a survey on normative sexual behaviours, adolescent perceptions of maternal barriers to sex communication, and maternal monitoring. Structural equation modelling analyses revealed that more barriers to communication (adolescent perceptions) were associated with more sexual behaviour frequency (i.e., oral and vaginal sex) among Mexican adolescents indirectly through its association with maternal monitoring. Findings were stronger for adolescents in 8th grades, but no differences were found by gender. This model expands our understanding of the parenting factors that impact Mexican adolescent sexuality. 相似文献
Research on sleep loss and vigilance both focus on declines in cognitive performance, but theoretical accounts have developed largely in parallel in these two areas. In addition, computational instantiations of theoretical accounts are rare. The current work uses computational modeling to explore whether the same mechanisms can account for the effects of both sleep loss and time on task on performance. A classic task used in the sleep deprivation literature, the Psychomotor Vigilance Test (PVT), was extended from the typical 10‐min duration to 35 min, to make the task similar in duration to traditional vigilance tasks. A computational cognitive model demonstrated that the effects of time on task in the PVT were equivalent to those observed with sleep loss. Subsequently, the same mechanisms were applied to a more traditional vigilance task—the Mackworth Clock Task—providing a good fit to existing data. This supports the hypothesis that these different types of fatigue may produce functionally equivalent declines in performance. 相似文献
Individuals with autism spectrum disorder (ASD) can have difficulty recognizing emotional expressions. Here, we asked whether the underlying perceptual coding of expression is disrupted. Typical individuals code expression relative to a perceptual (average) norm that is continuously updated by experience. This adaptability of face-coding mechanisms has been linked to performance on various face tasks. We used an adaptation aftereffect paradigm to characterize expression coding in children and adolescents with autism. We asked whether face expression coding is less adaptable in autism and whether there is any fundamental disruption of norm-based coding. If expression coding is norm-based, then the face aftereffects should increase with adaptor expression strength (distance from the average expression). We observed this pattern in both autistic and typically developing participants, suggesting that norm-based coding is fundamentally intact in autism. Critically, however, expression aftereffects were reduced in the autism group, indicating that expression-coding mechanisms are less readily tuned by experience. Reduced adaptability has also been reported for coding of face identity and gaze direction. Thus, there appears to be a pervasive lack of adaptability in face-coding mechanisms in autism, which could contribute to face processing and broader social difficulties in the disorder. 相似文献
The Psychological Record - Kantor’s (1982) analysis of cultural interbehavior focuses on shared stimulus–response functions that are conventional across individuals and established... 相似文献
Journal of Psychopathology and Behavioral Assessment - A large body of work documents the utility of behavioral risk tasks for making inferences about adolescent risk-taking proclivities and... 相似文献
Cognitive deficits are thought to be responsible for some of the symptoms and dysfunction in schizophrenia. Recent research on the anterior cingulate cortex supports this assumption. More detailed and definitive evidence for this association will require identification of specific neural networks whose abnormal structure, connections or activity create the cognitive deficits in question. 相似文献
The underlying factor structure of the Learning Experiences Questionnaire (LEQ; Schaub, 2004) was examined using data from 742 male and female college-age respondents. The LEQ items reflect a variety of learning experiences (generated based on Bandura's (1986, 1997) four sources of self-efficacy perceptions) that might occur in each of Holland's (1997) six RIASEC domains. The LEQ was expected to have a multi-dimensional factor structure, with dimensions representing both RIASEC context and learning experience type. A multi-trait multi-method framework was used to compare the relative fits of a series of models with different theoretically implied dimensionalities, estimated using confirmatory factor analysis. Results supported the proposed multi-dimensional structure. Results of follow-up tests of measurement invariance for men and women revealed that configural and partial factorial invariance held, implying that the LEQ measure functions similarly for men and women. 相似文献
The purpose of this paper is to develop a theoretical, yet practical framework for managing unrealistic expectations of expatriate marketing managers relative to their role in complex global marketing assignments. The formation of these unrealistic expatriate marketing managers’ expectations is examined using relational contracting theory. We explore alternative HRM evaluation/support designs that can suppress the development of expatriate marketing managers’ entitlement process and thus enhance the reality of expatriate marketing managers’ expectations relative to the role in a subsidiary of the multinational enterprise. 相似文献