Preferred Label : Psychometric Instrument Reliability;
NCIt related terms : psychometric reliability; reliability, psychometric;
NCIt definition : The extent to which the administration of a psychometric instrument and the data collected
from that administration is accurate, repeatable, and sensitive.;
Alternative definition : CDISC-GLOSS: The degree to which a psychometric 'instrument' is free from random error
either by testing the homogeneity of content on multi-item tests with internal consistency
evaluation or testing the degree to which the instrument yields stable scores over
time. NOTE: Reliability pertains to questions concerning whether an instrument is
accurate, repeatable, and sensitive. Reliability is distinguished from validation,
which answers whether the instrument (e.g., questionnaire) actually measure the selected
construct (latent variable). For example a balance (scale) is easily understood as
a possibly valid instrument to measure body weight. Its reliability would be assessed
by measuring the sensitivity, repeatability, and accuracy of the balance. The validity
of using the balance for a particular purpose could then be established by comparing
the measured reliability to the reliability required for that purpose. [After Patrick,
D.L., 2003] Compare to psychometric validation. See also validation, instrument.;
NCI Metathesaurus CUI : CL540630;
Origin ID : C142655;
UMLS CUI : C4684747;
Semantic type(s)
- concept_is_in_subset
