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BASIC PRINCIPLES OF ASSESSMENT - Coggle Diagram
BASIC PRINCIPLES OF ASSESSMENT
RELIABILITY
the degree to which an assessment tool produces stable and consistent results.
Factors that affect reliability of a test
test factor
teacher and student factor
environment factor
test administration factor
marking factor
VALIDITY
the extent by which it
measures what it was designed to measure.
TYPES
Content validity : does the assessment content cover what
you want to assess?
Criterion related validity : how well does the test measure
what you want it to?
Face validity : do the assessment items appear to be
appropriate?
Construct validity : are you measuring what you think
you're measuring?
Predictive validity refers to the "power" or usefulness of
test scores to predict future performance
AUTHENTICITY
A language assessment is authentic if the language being assess is used in ways that are appropriate and relevant to learners. ( McKay, 2006)
OBJECTIVITY
to the ability in the context of assessment to judge fairly , without bias or external influence
The test is said to have high objectivity when the examiner is able to give the same score to the similar answers guided by the mark scheme.
An objective test is a test that has the highest level of objectivity due to the scoring that is not influenced by the examiner’s skills and emotions.
subjective test is said to have the lowest objectivity.
PRACTICALITY
an effective test
not excessively expensive
s tays within appropriate time constraints
s relatively easy to administer and
h as a scoring/evaluation procedure that is specific and
time efficient
INTERPRETABILITY
Test interpretation encompasses all the ways that meaning is assigned to the scores.
Proper interpretation requires knowledge about the test, which can be obtained by studying its manual and other materials along with current research literature with respect to its use;
WASHBACK EFFECT
how tests affect the learning on a
students and the teaching of the subject,