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differentiate test validity and test reliability

PS460 Psychological Tests and Measurements

Directions: Be sure to save an electronic copy of your answer before submitting it to Ashworth College for grading. Unless otherwise stated, answer in complete sentences, and be sure to use correct English, spelling, and grammar. Sources must be cited in APA format. Refer to the “Format Requirementsʺ page for specific format requirements.

Respond to the topics for this writing assignment using your own words and examples. Design your responses as if you are explaining facts, concepts, and ideas to someone who isn’t familiar with the subject matter. Be sure to include creative examples wherever they may be appropriate. Also, be sure to provide a title for each of your essays.

This assignment requires you to write 1–2 page essays in response to the following three questions:

1. In your own words, briefly differentiate test validity and test reliability. Then describe and explain the concepts of content validity and criterion validity, making sure to address both concurrent and predictive validity.

2. Briefly describe the importance of the assessment interview. Then identify and describe several tactics employed by clinicians in assessment interviews, including preliminary considerations, directive vs. nondirective interviews, sequencing, comprehensiveness, the avoidance of “why” questions, and the importance of attending to the client’s nonverbal behavior.

3. Provide an overview of the pros and cons of the Wechsler Intelligence Scales, with an emphasis on the most recent versions (WAIS-IV for adults and WISC-for children). Be sure to explain what these scales can measure as opposed to what they can’t measure.

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