The problem of pre-test sensitization is most acute in the a. ...

[itsmyluck]

The problem of pre-test sensitization is most acute in the
 
  a. after-only design.
  b. one-group before-after design.
  c. matched-subjects design.
  d. cross-sectional design.

Question 2

If we examine how often people clean their homes and how content they are with their homes, the relationship might be distorted if we only include people who clean once or twice a year. This type of distortion is called _____.
 
  a. outliers
  b. restriction of range
  c. curvilinear
  d. linear

[moormoney]

Answer to Question 1

b

Answer to Question 2

b