An essential component of an operational definition is measurement. A simple and accurate definition of measurement is the assignment of numbers to a variable in which we are interested. These numbers will provide the raw material for our statistical analysis. Measurement is so common and taken for granted that we seldom ask why we measure things or worry about the different forms that measurem...

OBJECTIVE The Mandarin Tone Identification Test (MTIT) is a new test designed to assess the tone identification abilities of children with hearing impairment (HI). Evidence for reliability and sensitivity has been reported. The present study aimed to evaluate the known-groups and concurrent validity of the MTIT. DESIGN The MTIT and Mandarin Pediatric Speech Intelligibility test (MPSI) were ad...

introduction: considering schizophrenic patients’ problems with living skills, it seems necessary to evaluate these skills in this group of patients. in the present study, the kohlman evaluation of living skills (kels), developed by linda thomson kohlman at seattle, washington (1978), was first translated into persian and then its reliability and validity was determined. materials & methods: to...

background and aim: dichotic digit test (ddt) is a valid neuropsychological tool for determining the dominant hemisphere in verbal processing; therefore, the main goal of this research was designing and investigating the psychometric properties of ddt in a sample of iranian children and then measuring its concurrent validity using the n-back task. methods: the present study was a descriptive an...

BACKGROUND The 39-item Parkinson's disease questionnaire (PDQ-39) is more sensitive to functional change than other measures of health and disability. AIM To determine the ability of this scale to change over time and the concurrent validity of some of its subscales. METHODS We assessed a cohort of 67 Parkinson's patients for 18 months, using the PDQ-39, the GHQ-28 general health questionna...