And justice for all: Revisiting the Global Belief in a Just World Scale

The Global Belief in a Just World Scale (GBJWS) has been widely used in measuring the Belief in a Just World (BJW) personality trait. Despite its widespread application across the social sciences, the validity of this scale has not been sufficiently tested in the literature. In this research, the authors examine the internal and external validity of the GBJWS using both standard correlational analyses and structural equation modeling (SEM). Specifically, the authors test the concurrent validity, internal consistency, unidimensional structure, convergent validity, and both measurement and latent mean invariance of the scale across gender and culture. The results of a pilot study suggest strong concurrent validity of the GBJWS with other BJW scales, and the findings of the two main studies support the internal and external validity of GBJWS across gender and culture. The authors’ results further show an overall greater level of BJW of Chinese individuals compared to Americans. The present research provides a much needed investigation of the validity of the GBJWS, and answers calls for research examining the scale’s utility across different populations.     

Testing primary‐school children's understanding of the nature of science

Understanding the nature of science (NOS) is a critical aspect of scientific reasoning, yet few studies have investigated its developmental beginnings and initial structure. One contributing reason is the lack of an adequate instrument. Two studies assessed NOS understanding among third graders using a multiple‐select (MS) paper‐and‐pencil test. Study 1 investigated the validity of the MS test by presenting the items to 68 third graders (9‐year‐olds) and subsequently interviewing them on their underlying NOS conception of the items. All items were significantly related between formats, indicating that the test was valid. Study 2 applied the same instrument to a larger sample of 243 third graders, and their performance was compared to a multiple‐choice (MC) version of the test. Although the MC format inflated the guessing probability, there was a significant relation between the two formats. In summary, the MS format was a valid method revealing third graders' NOS understanding, thereby representing an economical test instrument. A latent class analysis identified three groups of children with expertise in qualitatively different aspects of NOS, suggesting that there is not a single common starting point for the development of NOS understanding; instead, multiple developmental pathways may exist.     

虚拟情境测验研究

该文从虚拟情境和心理测量两个方面规划了场帚式、游戏式、投射式三种虚拟情境测验样式；从科学技术层、心理情感层、操作互动层等方面对虚拟情境测验做出心理学分析；文章最后提出创立网络环境下虚拟情境测验的当代数学模型的设想。     

Moral judgments and ethical constructs in clinical psychology doctoral students

ABSTRACT

This cross-sectional study compared the moral reasoning of first-year and third-year doctoral students in clinical psychology. Nineteen first-year and 20 third-year students were recruited from 17 doctoral training programs in the UK. Most adopted a sophisticated approach to moral judgments, as assessed by the Defining Issues Test, although, surprisingly, more experienced students had significantly less sophisticated schemata. In their moral judgments, less experienced students relied more heavily on their personal, and more experienced students on their professional, constructs, as assessed by repertory grid technique. Integration between personal and professional constructs was higher in more experienced students.     

Subjective and physiological responses to the 35% carbon dioxide challenge in healthy and non-clinical control populations: a meta-analysis and systematic review

Background/Rationale: The carbon dioxide (CO₂) challenge has been reliably used in laboratory settings as a panicogen in clinical populations. However, the magnitude of these effects on healthy and non-clinical control populations are not clear. The aim of this meta-analysis and systematic review is to provide quantitative estimates of those effects. Specifically, the current paper will evaluate the relative efficacy of the CO₂ challenge in eliciting both subjective and physiological arousal in healthy and non-clinical control populations.

Method: A total of 16 articles with 35 independent samples were included in the meta-analysis, while 37 studies with 74 independent samples were included in the systematic review.

Results: Both the meta-analysis and systematic review found the CO₂ challenge to elicit an increase in subjective distress via self-reported anxiety and fear. Physiological responses via blood pressure and heart rate were heterogeneous in studies sampled, with no significant changes observed across studies. Moderator analyses revealed the variations in findings may be attributed to participant screening and invasive sampling.

Discussion: Findings highlight the CO₂ challenge as a useful tool in the provocation of subjective distress. Implications for both the use of the CO₂ challenge and its anticipated effects in healthy and non-clinical control populations are discussed.     

Factor structure of the CNS Vital Signs computerized cognitive battery in youth with neurological diagnoses

Computerized cognitive batteries, such as CNS Vital Signs (CNSVS), can provide valuable information in clinical and research settings. However, psychometric properties, especially in children and adolescents, remain relatively understudied. The aim of this study was to investigate the factor structure of CNSVS in children and adolescents with neurological diagnoses.

Participants with neurological diagnoses (N = 280) age 7–19 years were assessed as part of their clinical care at a tertiary hospital. All participants received the full CNSVS computerized cognitive battery, which contains seven subtests designed to measure attention, executive functioning, psychomotor speed, and memory. Principal components analyses were used to examine factor structure.

Scores from CNSVS subtests loaded onto a three-component solution and accounted for 46% of the variance. The three components were deemed to best represent (1) speed, (2) memory, and (3) inhibition, with subtest scores loading differently than the original 11 primary and secondary domain scores would have suggested.

Although the CNSVS program generates numerous primary and secondary domain scores, a three-component solution represents a more parsimonious approach to interpreting performance on the CNSVS in youth with neurological diagnoses. Confirmation of this factor solution in other samples is warranted.     

Model Selection of Nested and Non-Nested Item Response Models Using Vuong Tests

Abstract

In this paper, we apply Vuong’s general approach of model selection to the comparison of nested and non-nested unidimensional and multidimensional item response theory (IRT) models. Vuong’s approach of model selection is useful because it allows for formal statistical tests of both nested and non-nested models. However, only the test of non-nested models has been applied in the context of IRT models to date. After summarizing the statistical theory underlying the tests, we investigate the performance of all three distinct Vuong tests in the context of IRT models using simulation studies and real data. In the non-nested case we observed that the tests can reliably distinguish between the graded response model and the generalized partial credit model. In the nested case, we observed that the tests typically perform as well as or sometimes better than the traditional likelihood ratio test. Based on these results, we argue that Vuong’s approach provides a useful set of tools for researchers and practitioners to effectively compare competing nested and non-nested IRT models.     

Legal and Ethical Considerations for Requiring Consent for Apnea Testing in Brain Death Determination

Abstract

The past decade has witnessed escalating legal and ethical challenges to the diagnosis of death by neurologic criteria (DNC). The legal tactic of demanding consent for the apnea test, if successful, can halt the DNC. However, US law is currently unsettled and inconsistent in this matter. Consent has been required in several trial cases in Montana and Kansas but not in Virginia and Nevada. In this paper, we analyze and evaluate the legal and ethical bases for requiring consent before apnea testing and defend such a requirement by appealing to ethical and legal principles of informed consent and battery and the right to refuse medical treatment. We conclude by considering and rebutting two major objections to a consent requirement for apnea testing: (1) a justice-based objection to allocate scarce resources fairly and (2) a social utility objection that halting the diagnosis of brain death will reduce the number of organ donors.