In an experiment conducted by professor costa, the participants' first task is to press any button if they see a red light blink. for the second task, they press the rightmost button if they see a red light blink and the leftmost button if they see a green light blink. professor costa is studying the difference in the average lag times of these two tasks. this is similar to experiments conducted by the german psychologist

Mike and his wife, amanda, are arguing about his in-laws. mike doesn’t want them to visit because they fight all the time when they come to the house and he is worried about the effect that their fighting is having on mike and amanda’s children. amanda finally yells out: “what about our fighting? ” mike replies, “well, that’s different. we fight because we’re having a disagreement, they fight because they hate each other! ” this is an example of