Search for dissertations about: "true scores"

Showing result 1 - 5 of 31 swedish dissertations containing the words true scores.

  2. 1. Observed score equating with covariates

    Author : Kenny Bränberg; Marie Wiberg; Xavier de Luna; Dag Sörbom; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Equating; observed score equating; true scores; item response theory; linear equating function; equipercentile equating; kernel equating; covariates; linear regression; mean squared error; Statistics; Statistik; Statistics; statistik;

    Abstract : In test score equating the focus is on the problem of finding the relationship between the scales of different test forms. This can be done only if data are collected in such a way that the effect of differences in ability between groups taking different test forms can be separated from the effect of differences in test form difficulty. READ MORE

  4. 2. Psychometric studies of the Swedish version of the Adolescent Drug Abuse Diagnosis (ADAD) instrument

    Author : Josefine Börjesson; Helene Ybrandt; Bengt-Åke Armelius; Anders Tengström; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; ADAD; validity; reliability; assessment; psychometric; severity index; composite score; normal; antisocial adolescents; psychological health;

    Abstract : This thesis describes studies into the psychometric properties of a Swedish language version of the Adolescent Drug Abuse Diagnosis (ADAD) instrument. The psychometric properties of this instrument have been examined in two previous studies: an American study was conducted by the developers of the interview, Friedman and Utada (1989), and a Swiss study was undertaken by Bolognini et al. READ MORE

  5. 3. A perfect score : Validity arguments for college admission tests

    Author : Per-Erik Lyrén; Christina Stage; Marie Wiberg; Simon Wolming; Stephen G. Sireci; Umeå universitet; []
    Keywords : college admission tests; SweSAT; validity; interpretive arguments; predictive validity; equating; item revisions; subscores;

    Abstract : College admission tests are of great importance for admissions systems in general and for candidates in particular. The SweSAT (Högskoleprovet in Swedish) has been used for college admission in Sweden for more than 30 years, and today it is alongside with the upper-secondary school GPA the most widely used instrument for selection of college applicants. READ MORE

  6. 4. On sepsis - epidemiology, prediction and diagnostics

    Author : Lisa Mellhammar; Infektionsmedicin; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; sepsis; Epidemiologi; Early Warning Score; Bacteremia;

    Abstract : The overall aims of this thesis were to improve prediction, diagnostics and knowledge on epidemiology of sepsis. In paper I, we developed and evaluated an integrated platform for rapid analysis of sepsis-causing organisms directly from blood samples. READ MORE

  7. 5. Surgical treatment of spinal metastasis

    Author : Christian Carrwik; Yohan Robinson; Nasir Quraishi; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; spine surgery; oncology; Orthopaedics; Ortopedi;

    Abstract : The aim of this thesis was to study surgical treatment of spinal metastasis from several points of view, with a focus on predictive tools and survival after surgery. Study I includes 315 patients treated surgically at Uppsala University Hospital 2006-2012 due to spinal metastatic disease. READ MORE