Using an experimental research design, 191 working adults were randomly assigned to two experimental conditions in order to test a theoretical model linking leader and follower positive psychological capital (PsyCap). Multiple methods were used to gather information from the participants. We found when leader PsyCap was manipulated experimentally,…

Objective: An earlier meta-analysis of pediatric clinical trials indicated that lisdexamfetamine dimesylate (LDX) had a greater effect size than other stimulant medications. This work tested the hypothesis that the apparent increased efficacy was artifactual. Method: The authors assessed two potential artifacts: an unusually high precision of…

We compared the extent to which having an intellectual or developmental disability was associated with rates at which Iowa Medicaid-enrolled children ages 3 to 8 had first dental checkups after an initial dental examination. We hypothesized that these children would have later first dental checkups than would children without an intellectual or…

Measuring teacher effectiveness is challenging since no direct estimate exists; teacher effectiveness can be measured only indirectly through student responses. Traditional value-added assessment (VAA) models generally attempt to estimate the value that an individual teacher adds to students' knowledge as measured by scores on successive…

The recently published article "English Proficiency Tests and Communication Skills Training for Overseas-Qualified Health Professionals in Australia and New Zealand" (Wette, 2011) aims to address perceived problems and misconceptions associated with the testing of English language skills and professional communicative competence of…

Emotions experienced during online academic examinations may differ from emotions experienced in the traditional classroom testing situation. Students in a "Psychology of Learning" course (n = 61) completed assessments of emotions before and after a quiz in each of the following settings: online at their own choice of time and location; online in…

The levels and growth achievement functions make extreme and diametrically opposed assumptions about the rate at which teacher inputs persist. I first show that if these assumptions are incorrect, teacher value-added estimates can be significantly biased. I then develop a tractable, cumulative model of student achievement that allows for the joint…

The purpose of this paper was to explore innovative entrepreneurship and to gain insight into the educational practices and experiences that increase the likelihood that a student would graduate with innovative entrepreneurial intentions. To this end, we administered a battery of assessments to 3,700 undergraduate seniors who matriculated in the…

There has been considerable debate over the ways in which children's early literacy skills develop over time. Using confirmatory multidimensional scaling (MDS) growth analysis, this paper directly tested the hypothesis of a cumulative trajectory versus a compensatory trajectory of development in early literacy skills among a group of 1233…

As access and reliance on technology continue to increase, so does the use of computerized testing for admissions, licensure/certification, and accountability exams. Nonetheless, full computer-based test (CBT) implementation can be difficult due to limited resources. As a result, some testing programs offer both CBT and paper-based test (PBT)…

In this study, repeated measures item response data from an English language proficiency (ELP) test administered over 2 years were analyzed by item response theory-based approaches to model change over time. First, change over time was modeled by an item side change approach where change was parameterized at the item level. Second, more…

Background: Although many children grow up with more than one sibling, we do not yet know if sibling dyads within families show similarities to one another on sibling affection and hostility. In the present study the hypotheses were tested that (a) there will be significant between family variation in change in sibling affection and hostility and…

Given increased sexual risk-taking among youth with mental health problems, this study sought to understand the developmental trajectory of sexual self-esteem (SSE) among this vulnerable population and how it is impacted by sexual experiences. Participants were 185 adolescents who attended therapeutic/alternative schools in southern New England.…

Background: Recent studies have shown that individuals with Down syndrome (DS) are poorer than controls in performing verbal and visuospatial dual tasks. The present study aims at better investigating the dual task deficit in working memory in individuals with DS. Method: Forty-five individuals with DS and 45 typically developing children matched…

This article reports the concluding part of a larger study on retention of key procedural and conceptual concepts in differential and integral calculus among Croatian and Danish university students in non-mathematics study programmes. The first parts of the study examined the retention of the students' knowledge through a questionnaire testing…