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Chapter 4

Chapter 4 Psychology Testing Textbook, 7th edition

5 Pages

Course Code
Psychology 2080A/B
Doug Hazlewood

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Chapter 4September 19Domain sampling Time sample what happens on certain occasions Internal consistency are you testing only the one thing you think are testing a psychology test may turn into a reading test if the questions are difficult Reliability the thing we are interested in is not directly observable Ability is not observable we INFER it from behavior Behavior is not transparent we cannot look at it and see your ability O matter of fact we can observe it T thing we are really interested in E always presentcan be positive or negative Fundamental principle the more error there is in your measurements the less reliable those measurements areError of measurement is somethings negative and sometimes positive eg not enough sleep too much noise The more error there is in the measurement the more distance between scores Error in measurements take away from reliability because it allows for more accounts of how you do on the same test True score would be obtained if there were NO error of measurement If we test someone too many times the errors will cancel each other out that tells us the mean is close to the true score Sarahs true score is completely independent from the words we choose Otei ei e2 e3 errors will be different on all testing occasions Domain sampling error error due to items on the test Suppose no questions were asked about a certain chapter suppose to be on the test than your score would not represent that certain chapter You would spend time studying a chapter not included in the test oppose to spending time studying chapters that WILL be on the test Exam score may vary depending on whats included or dis cluded from the exam Solution increase the number of questions on the text to be able to cover the whole knowledge base Parallel forms of reliability choosing two different sets if test items covering the same material and same difficulty
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