Statistical regression, as a threat to internal validity, refers ...

[rlane42]

Statistical regression, as a threat to internal validity, refers to
 
  a) The shift of statistical significance as the number of participants increases
  b) The tendency of modal responses to move away from the center of the distribution
  c) The inability of certain designs to detect statistically significant difference, should they exist
  d) The tendency of extreme scores to move toward the mean of the distribution when a measure is readministered

Question 2

An example of the instrumentation threat to internal validity is
 
  a) Questions in the survey are periodically reworded.
  b) Standardized tests are used.
  c) The experimenter leaves the room during the test.
  d) Assessments use both multiple choice and true/false questions.

[Liamb2179]

Answer to Question 1

Correct Answer: c

Answer to Question 2

Correct Answer: c

[rlane42]

Thanks for the timely response, appreciate it

[Bigfoot1984]

Wow, this really help