Answer the following 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 accumula

I’m studying and need help with a Psychology question to help me learn.

Answer the following 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?

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