Although object relations theories are increasingly prominent in the psychoanalytic and psychotherapeutic literature, efforts to study these phenomena empirically remain in their infancy. Researchers interested in studying intrapsychic processes have nonetheless attempted to assess levels of object relatedness, and several reports have documented both construct and predictive validity. This lit...

OBJECTIVE To investigate the validity and reliability of the EuroQol-5D (EQ-5D), the 12-item Short-Form Health Survey (SF-12v2), and the Hospital Anxiety and Depression Scale (HADS) in a stable coronary population. STUDY DESIGN Cross-sectional study EUROASPIRE III. SETTING Quality of life data (QoL) were available on 8745 patients hospitalized for coronary artery bypass graft (CABG), percut...

Validity in research refers to how accurately a study answers the study question or the strength of the study conclusions. For outcome measures such as surveys or tests, validity refers to the accuracy of measurement. Here validity refers to how well the assessment tool actually measures the underlying outcome of interest. Validity is not a property of the tool itself, but rather of the interpr...

BACKGROUND Because of specific methodological difficulties in conducting randomized trials, surgical research remains dependent predominantly on observational or non-randomized studies. Few validated instruments are available to determine the methodological quality of such studies either from the reader's perspective or for the purpose of meta-analysis. The aim of the present study was to devel...

Gait and Balance Scale (GABS) consists of historical information and examination of 14 different gait and balance parameters designed to assess the severity of these functional domains. Thirty-five patients with Parkinson's disease (PD), Hoehn and Yahr stages 1-3, were tested during their "off" period. GABS items were compared to quantitative data from two computerized gait analysis instruments...

PURPOSE The use of multisource feedback (MSF) or 360-degree evaluation has become a recognized method of assessing physician performance in practice. The purpose of the present systematic review was to investigate the reliability, generalizability, validity, and feasibility of MSF for the assessment of physicians. METHOD The authors searched the EMBASE, PsycINFO, MEDLINE, PubMed, and CINAHL d...

AIM Through a complex combination of direct (face-valid) and indirect (subtle) subscales, the Substance Abuse Subtle Screening Inventory (SASSI) is purported to detect substance use disorders with a high degree of validity regardless of respondent honesty or motivation. This review evaluates empirical evidence regarding the reliability and validity of this widely used screening instrument. ME...

Reliability and Validity 2 Instrument Reliability and Validity: Introductory Concepts and Measures Instrument validity and reliability have often been both misunderstood and under emphasized in the social scientific literature. In truth, these phenomena lie at the heart of competent and effective study. How productive can one's research to be if the instrument that he or she implemented does no...

Teaching practicum is one of the important aspectsof professional education, especially teaching in field Technical and Vocational Education Training (TVET). This study aimed to identify validity reliability instrument construction technology at vocational colleges. deployed a mixed method approach using quantitative qualitative analysis. The instruments comprised questionnaire, observation rev...