1. If we want to know if a therapy works, we would use 
 the experimental method 
 the nonexperimental method 

2. The control group receives 
 no treatment 
 the treatment 

3. The hypothesis that the drug has no effect on behavior is 
 an experimental hypothesis 
 a null hypothesis 

4. We can accept the null hypothesis 
 True 
 False 

5. To have a simple experiment, you must 
 conduct the study in a laboratory 
 randomly assign participants to condition 

6. If the results are statistically significant, they 
 are probably due to chance alone 
 are probably NOT due to chance alone 

7. If the results are statistically significant, then the treatment probably 
 does have an effect. 
 does NOT have an effect. 

8. If the results are not statistically significant, then 
 you can conclude that the treatment has no effect. 
 you cannot conclude anything. 
