As applied linguists and language testers, we are in the business of "doing language". For many of us, language learning is a lifelong passion, and we invest similar enthusiasm in our language assessment research and testing practices. Language is also the vehicle through which we communicate that enthusiasm to others, sharing our…

The Dark Factor of Personality (D) measures the latent core of antagonistic traits. The present study evaluated the psychometric properties of the Swedish version of the full (D70) and the brief (D16) versions, concerning structural validity, item information, and convergent validity. An online sample (N = 294) was analyzed using CFA (Maximum…

Different definitions and tests of dyslexia can cause unfairness and make life difficult for people with dyslexia as well as for the professionals. In 2012, the Danish government decided to support the fight against dyslexia. The government issued a public tender for the development of "a standardized, electronically administered test of…

We examined dimensionality and temporal stability of the Interpersonal Stress Scale-Counselor (ISS-C) scores in a sample of professional counselors (n = 518). Confirmatory factor analyses provided support for a four-factor model previously identified through exploratory factor analysis and a bifactor model. Using a randomized test-retest, temporal…

We present a set of studies the objective of which was to test the robustness of the acknowledgment of earned entitlement effect across different experimental modes and populations. We present three sets of results. The first is derived from a between-subject analysis of two independent, but comparable samples of nonstudent adults. One sample…

Meta-analysis of diagnostic test accuracy (DTA) is a powerful statistical method for synthesizing and evaluating the diagnostic capacity of medical tests and has been extensively used by clinical physicians and healthcare decision-makers. However, publication bias (PB) threatens the validity of meta-analysis of DTA. Some statistical methods have…

We review common situations in Bayesian latent variable models where the prior distribution that a researcher specifies differs from the prior distribution used during estimation. These situations can arise from the positive definite requirement on correlation matrices, from sign indeterminacy of factor loadings, and from order constraints on…

For the last 40 years, special education and applied behavior analysis researchers have discussed the notion of social validity, particularly those researchers who conduct single-case research. A substantial part of this discussion has involved critiquing the rigor of methods used to assess social validity. We conducted a scoping literature review…

A recent article in this journal claims that the simple view of reading represents a long-outdated account of what underlies the ability to read. Its authors argue that if teachers are to be better informed about what is known about reading then the simple view must be replaced by a more current model, one that captures the substantial progress…

The addition of disruptive mood dysregulation disorder (DMDD) to the fifth edition of the "Diagnostic and Statistical Manual of Mental Disorders" ("DSM-5") was a controversial decision in 2013 and one that continues to the present. Researchers have found that DMDD exhibits both poor interrater reliability and discriminant…

The literature on proof by contradiction (PBC) is nearly unanimous in claiming that this proof technique is "more difficult" for students than direct proof, and offers multiple hypotheses as to why this might be the case. To examine this claim and to evaluate some of the hypotheses, we analyzed student work on proof construction problems…

The assessment of human performance is not a new phenomenon. We have evidence that people have been required to prove their worth dating back at least to the Epic of Gilgamesh. What has changed, at least on a large scale, is the importance given to quantitative evidence in the evaluation process. For example, many employers have begun subjecting…

The purpose of this paper is to propose a revision of the well-known Campbellian system for causal research. The revised system, termed the COPS model, applies to both applied and basic research. Five validities are included, where two validities are adopted from the Campbellian system, and the validities are partly hierarchically ordered.…

Though the concept of validity is rooted in positivism, recent scholars have expanded the definition of validity to reflect more progressive paradigms, opening the door to consideration of validity in qualitative education research. Despite this evolution, to date a review of validity evidence in qualitative research has yet to be undertaken even…

This study provides insight into the role of expertise in the process of team creativity. Existing process models, that is, the random variation model and the creative synthesis model, either fail to treat team as an independent creative entity or neglect the differentiation in the voice of individual members in team creative process. In contrast,…