There is an interaction if a. there is no main effect of ...

[olgavictoria]

There is an interaction if
 
  a. there is no main effect of either Variable A or Variable B
  b. the effect of Variable A depends on whether there is a main effect of Variable B
  c. there is a main effect of both Variable A and Variable B
  d. the effect of Variable A depends on the level of B

Question 2

Suppose a researcher investigated the judgments of guilt made by jurors in response to attractiveness (attractive vs unattractive) and facial expression (neutral vs smiling). The results indicated a main effect for attractiveness as your only significant finding. This would mean that
 
  a. Attractiveness alone was responsible for juror guilt decisions
  b. Facial expression alone was responsible for juror guilt decisions
  c. Both attractiveness and facial expression was responsible for juror guilt decisions
  d. Nothing; You can never believe main effects in a factorial experiment

[Laurenleakan]

Answer to Question 1

d

Answer to Question 2

a

[olgavictoria]

Thank you

[Laurenleakan]

No problem