In the children’s dark-fears study, suppose that we had found significant main effects for both level of illumination and fearful images, but no interaction. Draw a graph to show how such results...

In the children’s dark-fears study, suppose that we had found significant main effects for both level of illumination and fearful images, but no interaction. Draw a graph to show how such results would look. How would you interpret the findings conceptually?

As the teaching assistant for your course, you are asked to explain that a 2
 2 factorial study is, in a sense, two separate studies combined. How would you develop your explanation?