Reliability, validity LTCFeedback and Learning: To provide feedback to students about their strengths and weaknesses and to guide further learning

sanjaysuryawanshi548 0 views 15 slides Oct 08, 2025
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Slide Content

An Introduction to
Reliability and Validity
Dr L T Chinte
Assi. Prof.
Dept of Community Medicine
VDGMC Latur

Session Objectives
Discuss various attributes of assessment
Understand reliability and validity and apply
it to assessment design

Validity
Evidence that the assessment
measures what it purports to measure
Evidence related to appropriateness of
interpretation of results
Validity is a matter of degree – does not
exist on an all or none basis

Validity evidence:
Are the outcomes well defined ?
Does exam blueprint adequately represent
the objectives of the course?
Does exam content match outcomes being
assessed?
What was the expertise of paper-setters?
How many experts were involved in setting
the paper?

Validity evidence:
Are students familiar with the format?
Did all students take the exam in similar
conditions/similar exam?
How were the pass/fail criteria defined ?

To “build in” validity
Clearly state learning outcomes
Prepare detailed blueprint
Choose appropriate method/tasks
(assessment system)
Keep difficulty level appropriate
Have clear directions for
administration, scoring and
interpretation

Reliability
Refers to consistency of assessment
outcomes

Reliability
Would the score/student ranking be
reproduced if tested again?
Would the score/student ranking be
reproduced by different raters?

Reliability and Validity

Neither reliable nor valid

Reliable but not valid

Reliable and valid

Utility of Assessment
•Utility of assessment= V x R x F x A x I
•Possible to work within parameters
•A high rating in one can compensate for low in
another, however a zero in anyone will make it
zero
Vleuten, 2005

Any Questions…..
THANK YOU!