Dr. Matthews is concerned that, in his pre-post testing study, ...

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Dr. Matthews is concerned that, in his pre-post testing study, subjects might catch on to his hidden purpose of the study, based on their experience to the pre-test.
 
  Dr Matthews appears to be concerned that __________ will bias the subjects' posttest responses.
 
   a. regression to the mean
   b. maturation
   c. pretest sensitization
   d. statistical control

Question 2

If you conduct a correlational study, you can sometimes compute t-values in analyzing your results. Such an analysis would let you conclude that
 
  a. there is a nonlinear relationship between the two variables you investigated.
  b. your predictor variable is more important than your criterion variable.
  c. your variables are related but you cannot assess causation.
  d. there is little chance that there was a directionality problem in the study.

[lauravaras]

Answer to Question 1

c

Answer to Question 2

C

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Excellent

[cdmart10]

Thanks for the timely response, appreciate it