Which of the following would NOT be considered a manipulation of ...

[nautica902]

Which of the following would NOT be considered a manipulation of the way in which a problem is presented in an experiment on problem solving?
 
  a. varying the order in which information is given to the participants
  b. varying the amount of irrelevant information given to the participants
  c. varying the amount of a reward offered to the participants for solving the problem successfully
  d. varying the nature of a diagram provided to the participants

Question 2

Robb carefully designed a study to test a method for reducing test anxiety among students. On the day he conducts his post-test, a broken water main nearby results in jack hammering and other construction sounds that are seem to be distracting research participants. Robb's ability to detect differences among his groups may have been compromised by ____.
 
  a. low reliability of the measure
 b. random heterogeneity of participants
 c. poor reliability of treatment implementation
  d. random irrelevancies in the setting

[katieost]

Answer to Question 1

C

Answer to Question 2

d