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  1. No Access

    Article

    Measuring social health in the patient-reported outcomes measurement information system (PROMIS): item bank development and testing

    To develop a social health measurement framework, to test items in diverse populations and to develop item response theory (IRT) item banks.

    Elizabeth A. Hahn, Robert F. DeVellis, Rita K. Bode… in Quality of Life Research (2010)

  2. No Access

    Article

    Content validity in the PROMIS social-health domain: a qualitative analysis of focus-group data

    Our aim was to assess the content validity of the Patient-Reported Outcomes Measurement Information System (PROMIS) social health item banks by comparing a prespecified conceptual model with concepts that focu...

    Liana D. Castel, Kelly A. Williams, Hayden B. Bosworth… in Quality of Life Research (2008)

  3. No Access

    Article

    Toward objective classification of childhood autism: Childhood Autism Rating Scale (CARS)

    Dr. Eric Schopler, Robert J. Reichler… in Journal of Autism and Developmental Disord… (1980)

  4. No Access

    Article

    Perception of contingency and mental retardation

    It is argued that the general learning difficulties exhibited by mentally retarded persons are similar in many respects to the learning difficulties of nonretarded persons who are in a state of learned helples.....

    Robert F. DeVellis, Charley McCauley in Journal of Autism and Developmental Disorders (1979)