Is it Always Possible to have VALID and RELIABLE Assessment?

1. Is it Always Possible to have VALID and RELIABLE Assessment? Presented by: Siebe Van Dijk Kalmindar Gill Yung Tsing Mew

2. What is Validity and Reliability? Validity 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). • In order to be valid, assessment must be reliable; but reliability does not guarantee validity

3. What Affected the Assessment? • Students’ Learning Styles • Disruption: Sports practice • Time: single and various assessments • Resources: Unable to measure • Environment: Noise from lawn mower

4. What Could A Teacher Do? • 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) • 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)

7. 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. http://www.cap.nsw.edu.au/teachers/tech_based_resources/mi_pages/index.htm http://www.economicexpert.com/a/Assessment.htm http://www.learningandteaching.info/teaching/assessment.htm http://mathdl.maa.org/mathDL/4/?pa=content&sa=viewDocument&nodeId=504 http://www.pgcps.pg.k12.md.us/~elc/developingtasks.html http://www.pli.com.au/ http://wilderdom.com/personality/L3-2EssentialsGoodPsychologicalTest.html