I Can Distinguish the types of validity Distinguish

Validity When a test measures what it claims to em Analysis Face Validity his

Reliability o A test that yields the same results over time Test-Retest Reliability People

Test Standardization The administration of the test and the scoring guidelines are the

The Normal Distribution of IQ Scores Normal Range Number of Persons Many Few 0

Types of Tests 1. Objective Tests Can be scored easily by a machine 2.

Ethics and Standards in Testing Ethical concerns related to testing involve: --The confidentiality of

Can I? • Distinguish the types of validity • Distinguish the types of reliability

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Validity When a test measures what it claims to em Analysis Face Validity his is done to examine how a test is related to learning objectives A basic form of v which determ or example…Creating the MCAS test measure app the face of it) his is done to examine how a test is related to learning objectives measure wha supposed to m Criterion Validity The performance of the test taker is measured against a specific learning goal. Does it meet the criteria? If we find out there is a high correlation between student grades in high-school and their success in college we would say there is high criterion-related validity Content Validit Each test item is representative subject that th covers Does a test mea knowledge or of a topic? Copyright © Allyn & Bacon 2007

Reliability o A test that yields the same results over time Test-Retest Reliability People get the same score when they take the test more than once Split-Half Reliability A measure of the reliability in which a test is split into two parts and an individual’s score on both parts are compared Inter-Rater Reliability Measures how similarly two different test scorers would score the same test Copyright © Allyn & Bacon 2007

Test Standardization The administration of the test and the scoring guidelines are the same for each student The results can then be used to draw conclusions about the test takers with respect to the test objectives.

The Normal Distribution of IQ Scores Normal Range Number of Persons Many Few 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 IQ Normal Range : Scores falling near the middle of a normal distribution Copyright © Allyn & Bacon 2007

Types of Tests 1. Objective Tests Can be scored easily by a machine 2. Subjective Tests true/false, are multiple Individuals asked to write answers rather choice, anything than choose from ayou set of possible answers § can scantron Subjective tests are more challenging and expensive to prepare, administer and evaluate correctly, but they can be more valid. Copyright © Allyn & Bacon 2007

Ethics and Standards in Testing Ethical concerns related to testing involve: --The confidentiality of the test results --How to report the results --How to use the test to compare individuals --The impact of tests on society as a whole Copyright © Allyn & Bacon 2007