Robert has just finished analyzing the results of his 3 x 3 factorial experiment. He examines a line graph that depicts both independent variables on the same axes, and he notes that the lines on the graph are clearly not parallel with each other.
Based on this information, what should Robert conclude?
a. There are three main effects in the study.
b. There is an interaction effect in the study.
c. There are nine main effects in the study.
d. There is no interaction effect in the study.
Question 2
Which one of the following general principles was not included in the APA (2002) ethics code?
a. Beneficence and nonmaleficence
b. Fidelity and responsibility
c. Integrity
d. Maximizing personal profits