OBJECTIVE The aim of this study was to establish and validate the measurement properties of the Disability Rating Index (DRI) in a population of adults undergoing hip replacement. METHODS One hundred and twenty-six adults participating in a randomized controlled trial completed the Oxford Hip Score, Harris Hip Score, DRI and EuroQol Group-Five Dimensions (EQ-5D) questionnaires at four time po...

Keywords: Achievement emotion Pride Anger Boredom Test anxiety Self-regulated learning Control-value theory Aside from test anxiety sca les, measurement instruments assessing studen ts' achievement emotions are largely lacking. This article reports on the construction, reliability, internal validity, and external validity of the Achievement Emotions Questionnaire (AEQ) which is designed to asse...

It will be argued that the inclusion in the experimental design of contextual clues, such as “label” or “virtual simulations”, which make the laboratory task familiar, proved that problem solving in decision-making under uncertainty is environmentdependent. This supports the belief that the context-free experiment is not only an elusive goal, but also an inappropriate tool to investigate cognit...

Depending on the concrete application field and the data collection situation, conjoint experiments can end up with a low internal validity of the estimated part-worth functions. One of the known reasons for this is the (missing) temporal stability and structural reliability of the respondents’ part-worth functions, another reason is the (missing) attentiveness of the respondents in an uncontro...

AIM To develop a standardised and validated respiratory symptom questionnaire for use in epidemiological or follow up studies in infants and preschool children. METHODOLOGY After initial design and development, the questionnaire was administered to two cohorts of subjects, one recruited from a respiratory clinic and the other from a postnatal ward. The two cohorts then repeated the questionna...

Much of the large and growing body of literature on interruption and multitasking is motivated, in part, by a desire to reduce their negative effects in occupational settings, particularly those that are safety critical. Much of the existing knowledge has come from experimental studies, however, these do not necessarily generalize to non-experimental contexts. By virtue of being in situ, the re...

[Purpose] Currently, there are a limited number of amputee-specific instruments for measuring prosthesis-related quality of life with good psychometric properties in Turkey. This study translated the Prosthetic Evaluation Questionnaire to Turkish and analyzed as well as discussed its construct validity and internal consistency. [Subjects and Methods] The Prosthetic Evaluation Questionnaire was ...

BACKGROUND The practice environment pivotal role in patients and nurses better outcomes is evident. Practice Environment Scale of Nursing Work Index (PES-NWI) is widely utilized to assess nursing work environments. The present study was conducted to demonstrate the validity and reliability of the Persian version of PES-NWI. MATERIALS AND METHODS The instrument was translated and its psychomet...

BACKGROUND The main goal of psychiatric care is not to be focused only on reducing psychopathological symptoms, but on improvement of the patient's quality of life. AIM To examine validation and reliability SQLS-R4 among patients with schizophrenia. METHODS The sample consisted of 61 outpatients with schizophrenia attending the Psychiatry Hospital "Skopje". nclusion criteria for subject sel...

Randomized controlled trials (RCT) have become a dominant empirical tool in applied economics. The internal validity of RCTs crucially depends on the (implicit) assumption that the procedure assigning subjects to treatment and control groups has no effect on behavior. We show theoretically that this assumption is violated when people are motivated by belief-dependent preferences and care about ...