BACKGROUND The National Social Life, Health, and Aging Project (NSHAP) measures seven indicators of quality of life (QoL) and psychological health. The measures used for happiness, self-esteem, depression, and loneliness are well established in the literature. Conversely, measures of anxiety, stress, and self-reported emotional health were modified for their use in this unique project. The purp...

The semantics, or meaning, of validity is a fluid concept in educational and psychological testing. Contemporary controversies surrounding this concept appear to stem from the proper location of validity. Under one view, validity is a property of score-based inferences and entailed uses of test scores. This view is challenged by the instrument-based approach, which contends that tests themselve...

BACKGROUND Health assessment measurements for patients with Rheumatoid arthritis (RA) have to be meaningful, valid and relevant. A commonly used questionnaire for patients with RA is the Stanford Health Assessment Questionnaire Disability Index (HAQ), which has been available in Swedish since 1988. The HAQ has been revised and improved several times and the latest version is the Multi Dimension...

the aim of this study was to determine the relationship of psychological empowerment, organizational commitment and organizational citizenship behavior in physical education teachers in iran high schools and to determine which dimensions of these variables increase organizational citizenship behavior. 330 physical education teachers were selected using multistage cluster random sampling method....

introduction: spiritual identity, defined as self-identification based on spirituality and spiritual experiences, has gained increasing attention during the past few years. the aim of this study was to assess several predictors and outcomes of spiritual identity based on a causal model. methods: for this purpose, parent and peer attachment were considered as exogenous variables, spiritual ident...

To generalize from one experience to the next in a world where the underlying structures are ever-changing, people construct clusters that group their observations and enable information to be pooled within a cluster in an efficient and effective manner. Despite substantial computational work describing potential domain-general processes for how people construct these clusters, there has been l...

In several countries in Europe (among others Germany and Austria) persons who have lost their drivers licence have to undergo a psychological test in order to regain their licence. The article discusses the validity of two test batteries of the Expert System Traffic using standardized driving tests [Schuhfried, G., 2005. Manual Expert System Traffic (XPSV). Schuhfried GmbH, Mödling]. A global e...