Is it Always Possible to have VALID and RELIABLE Assessment?

Is it Always Possible to have VALID and RELIABLE Assessment? Presented by:

Siebe Van DijkKalmindar GillYung Tsing Mew

What is Validity and Reliability?Assessment tasks themselves can never be valid or invalid: it is the assessment-based inferences we make that are valid or invalid (Killen, R. 2005)Consistency of assessment information. Demonstration of the concept must occur more than once, enabling comparison and making of judgments (Airasian, P.W. 1991).

ValidityReliabilityIn order to be valid, assessment must be reliable; but reliability does not guarantee validityEnvironment: Noise from lawn mower

What Affected the Assessment?Students Learning StylesDisruption: Sports practiceResources: Unable to measureTime: single and various assessmentsWhat Could A Teacher Do?Improve Reliability: The number of items Difficulty of the items Test item discrimination Opportunity for guessing The wording of the items and instructions Environment Interpretations of students answer Clarity and completeness of marking guides

(Killen, R. 2005)

Improve Validity: Content validity How well do test items cover a body of knowledge and skill? Predictive validity How well does a test score predicts later performance? Construct validity How accurately does a test measure a theoretical attribute?

(Snowman, Dobozy, Scevak, Bartlett, Bryer, & Biehler, 2009)

References:

Airasian, P.W. (1991). Classroom Assessment. New York: McGraw-Hill, Inc.

Biggs, J. & Telfer, R. (1987). The Process of Learning. In C. Mansfield, EDU 245 Learning and Assessment Processes Reader. Perth, Western Australia, Australia: Murdoch University.

Killen, R. (2005). Programming and Assessment for Quality Teaching and Learning. In C. Mansfield, EDU 245 Learning and Assessment Processes Reader. Perth, Western Australia, Australia: Murdoch University.

McGrath, H., & Noble, T. (2005). Eight Ways At Once - Multiple Intelligences +Revised Bloom's Taxonomy. Frenchs Forest: Pearson Education Australia. Snowman, J., Dobozy, E., Scevak, J., Bartlett, B., Bryer, F., & Biehler, R. (2009). Psychology Applied to Teaching. Milton: John Wiley & Sons Australia, Ltd.

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