Is it possible to develop a test that will be totally free of error variance?

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Answer the following 5 questions:

  • Is it possible to develop a test that will be totally free of error variance? Why or why not?
  • What rationale would you use to justify the use of newly developed instruments that may not have existed long enough to accumulate evidence?
  • Describe situations in which the use of newly developed instruments would be appropriated.
  • What precautions do the practitioners need to take if they want to use new instruments?
  • Is it possible to have a test that is reliable but not valid? Why or why not?
  • What is the difference between construct, content, and face validity?

Submission Details:

  • Post your response to the Discussion Area by the due date assigned. Respond to at least two posts by the end of the week.
  • Use an APA style reference list with in-text citations in your initial response.
  • Use an APA style reference list with in-text citations in at least one of your two responses to classmates.
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