Purpose And Nature Of The Test

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Purpose and Nature of the test The Thematic Apperception Test also known as the TAT was developed in the 1930’s by Henry A. Murray with the help of Christiana Morgan at Harvard University. The TAT came to be based on a question asked by an undergraduate student about her son. The lady stated that while her son was sick, he would sit and look at pictures in a magazine and make up stories based on the picture. Murray took the boys idea idea and used it as a way to measure a persons mental state the test would reveal information about the whole person. There was already a test similare but Murray found the contemporary tests of his time lacking in some specific areas. So Murray came up with the idea to create a test based on his students son. He created the TAT, Murray and his friend Christiana Morgan spent most of the 1930s selecting pictures from illustrative magazines and developing the test. After creating 3 different versions of the test which were known as Series A, Series B, and Series C. Morgan and Murray decided on the final set of pictures, called Series D, which is what is being used today. The Thematic Apperception Test is a projective psychological test. That is used to assess one individual at a time. The objective is for the patient to tell a story based on the picture they have been shown. Based on the story it can be reveal underlying motives, concerns, and the way the subject sees the social world. The TAT is popularly known as the picture interpretation technique because it uses a series of provocative yet ambiguous pictures; which the subject is asked to tell a story. The story must be dramatic and the individual must include foreshadowing of the event shown, whats happening at that very moment, feeling and... ... middle of paper ... ...ng the test. It has been argues that internal consistency measure dont apply to the TAT because they are not able to find any scores that correlate with each other. Every answer is different therefore examiners can 't test reliability because every picture shown is different resulting in different responses each time it is shown to a different subject. Murray stated himself that high test-retest reliability should not be expected because subjects tend to change their story each time they see the picture. Validity Validity is just as low as reliability because the pictures cannot test validity. Clinicians try to compare the TAT with MMPI but that reduces the accuracy because validity is based on population, purpose, and circumstances it is hard to achieve that when you can only go of the answers you receive from the subject based on the picture they have been shown.
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