Reliability (in assessment/evaluation)

DEFINITION 1: Reliability is concerned with the consistency and dependability of a measuring instrument, that is, it is an indication of the degree to which it gives the same answers over time, across similar groups and irrespective of who administers it. A reliable measuring instrument will always give the same result on different occasions assuming that what is being measured has not changed during the intervening period. Inter-rater reliability is a measure of the consistency between the ratings or values assigned to an observed phenomenon and is employed by researchers using structured observation techniques; it is usually expressed as a percentage of agreement between two raters.

SOURCE: Hickman, Richard (2013). Cambridge Handbook of Educational Abbreviations & Terms ( C.H.E.A.T.,.6th edition, Faculty of Education, University of Cambridge.



DEFINITION 2: One of the principles of assessment and refers to the consistency of the interpretation of evidence and the consistency of assessment outcomes. Reliability requires a standard benchmark of assessor competence and relevant vocational competence or access to subject matter expertise, and can only be achieved when assessors share a common interpretation of the unit/s being assessed.

SOURCE: IBSA (2015). VET Glossary. Part of a suite of support materials for the TAE Training and Education Training Package. 4th Edition, Australia.



© European Quality Assurance in Vocational Education and Training

This project has been funded with support from the European Commission. This Website reflects only the views of EQAVET and the Commission cannot be help responsible for any use which may be made of the information contained therein

Designed and developed by Arekibo