In response to views on public's right to know, there is growing attention to item disclosure - release of items, answer keys, and performance data to the public - in medical licensure examinations and their potential impact on the test's ability to measure competence and select qualified candidates. Recent debates on this issue have sparked legislative action internationally, including South K...

This study assessed and compared the daily step counts recorded by two different motion sensors in order to estimate the free-living physical activity of 135 adolescent girls. Each girl concurrently wore a Yamax pedometer and an ActiGraph accelerometer (criterion measure) every day for seven consecutive days. The convergent validity of the pedometer can be considered intermediate when used to m...

This paper examines the nature and the origins of almost twenty years of controversy between ecological (i.e., real-life) and traditional (i.e., laboratory) approaches to memory research and critically analyses the concept of ecological validity a core issue in this controversy which has received surprisingly little attention. The analysis of ecological validity suggests that it is comprised of...

We study auctions under different entry rules. Existing evidence about common value auctions points toward a severe overbidding phenomenon (winner’s curse) and high bankruptcy rate. In an experiment, we show that voluntary entry makes winner’s curse bids and bankruptcies more frequent, compared to a treatment with random assignment to the auctions. Instead, bankruptcy rates decrease when bidder...

Working dog organisations, such as Guide Dogs, need to regularly assess the behaviour of the dogs they train. In this study we developed a questionnaire-style behaviour assessment completed by training supervisors of juvenile guide dogs aged 5, 8 and 12 months old (n = 1,401), and evaluated aspects of its reliability and validity. Specifically, internal reliability, temporal consistency, constr...

A critical step in the development and use of tests of physical fitness for employment purposes (e.g., fitness for duty) is to establish 1 or more cut points, dividing the test score range into 2 or more ordered categories reflecting, for example, fail/pass decisions. Over the last 3 decades elaborated theories and methods have evolved focusing on the process of establishing 1 or more cut-score...

Cluster analyzed four variables: school attendance, employment, church attendance, and delinquency, to develop life-style profiles. Data from 218 African-American urban adolescents were used in the study. Five meaningful clusters were retained and subjected to criterion validity analyses using measures of spirituality, participation in a voluntary organization, self-esteem, and friend's substan...

BACKGROUND We examined four commonly used scores, the SF-36, the Ankle Osteoarthritis Scale (AOS), the American Orthopaedic Foot and Ankle Society (AOFAS) Ankle Hindfoot Score, and the Foot Function Index (FFI) to determine their responsiveness and validity. METHODS Patients with end stage ankle arthritis were recruited into a prospective multicenter cohort study and baseline and one year out...

OBJECTIVE The objective was to determine the reliability of a portable forearm strength hydraulic dynamometer with a doorknob handle and assess its validity compared with a Cybex 6000 (Cybex International, Inc., Medway, MA) isometric torque assessment. METHOD Eighteen volunteers (with a total of 30 forearms) participated in this one-session methodological study to determine the intra- and int...

I argue that if citizens systematically underestimate what their government can and should do for them, then they will hold politicians to a lower standard and sanction poor performers less often. A large-scale experiment across 95 localities in Mali in which some voters received information about potential government performance identifies effects of raising voter expectations. Survey experime...