Jim and Jamal are lifting weights together before football practice. Jim is doing a bench press with 240 pounds, and just to be funny Jamal slides an extra 5 pounds on the bar when Jim is not looking. Jim bench presses the new weight,
245 pounds, without even noticing that the weight had increased. If Jamal had added 50 pounds, however, Jim would probably have noticed .Which law explains why a small change to a large stimulus will be harder to detect than a small change to a small stimulus?
a. Frank Colaverta
b. Ernst Weber
c. Hermann von Helmholtz
d. Richard von Kraft Ebbing
Answer: B
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Dr. Robert's research hypothesis proposes that consuming a low carbohydrate diet will result in increased weight loss. One group of participants follows a low-carb diet for three weeks, whereas a second group follows a high-carb diet containing the same number of calories for three weeks. The average number of pounds lost for each group is then is compared. What is the dependent variable?
a. Number of pounds lost b. Length of time on the diet c. The amount of carbs in each diet d. The number of calories in each diet
Which of these is an example of punishment?
a) giving a child a star for telling a lie b) giving a child a cookie for cleaning her room c) taking away a child's favorite toy for hitting another child d) removing a penalty you imposed on a child after he began acting better