[removed]
A. the causal hypothesis can be accepted.
[removed]
B. the causal hypothesis cannot be rejected.
[removed]
C. extraneous variables may have affected the study.
[removed]
D. extraneous variables do not affect the hypothesis.
2.5 Points 
If we wish to apply results of a study to a wider population, the type of validity that we would be concerned about would be __________ validity.
[removed] A. statistical 

[removed] B. internal 

[removed] C. external 

[removed] D. construct 
2.5 Points 
In a doubleblind control procedure:
[removed] A. the participants and researcher are blind to assignment of participants. 

[removed] B. the laboratory is not illuminated. 

[removed] C. the researcher and the research assistant(s) are blind to assignment to the experimental group. 

[removed] D. no one knows which participants are assigned to the experimental group. 
2.5 Points 
Which confounding variable can ONLY occur in withinsubjects studies?
[removed] A. Regression to the mean 

[removed] B. Diffusion of treatment 

[removed] C. Sequence effects 

[removed] D. Testing 
2.5 Points 
In order to generalize across different times, places, or conditions, a researcher must:
[removed] A. sample across those times, places, or conditions. 

[removed] B. use a random sample of participants. 

[removed] C. use a large enough sample size. 

[removed] D. use powerful statistics. 
2.5 Points 
When research participants give information to prospective participants about the procedures, the research could be affected by the confounding variable of:
[removed] A. the bystander effect. 

[removed] B. diffusion of responsibility. 

[removed] C. diffusion of treatment. 

[removed] D. regression to the mean. 
2.5 Points 
Since the data on gender differences in mathematical ability tend to support both a nature and a nurture hypothesis, the __________ validity of any one interpretation is in doubt.
[removed] A. internal 

[removed] B. construct 

[removed] C. statistical 

[removed] D. external 
2.5 Points 
Experimenter effects do NOT result from the experimenter’s knowledge of the:
[removed] A. hypothesis being tested. 

[removed] B. assignment of individual participants to conditions of the experiment. 

[removed] C. nature of the experiment and control conditions. 

[removed] D. specific details of the independent variable. 
2.5 Points 
After the statement of the problem has been clearly defined and the major variables identified, the next step in developing a research hypothesis is to:
[removed] A. test the problem statement on research participants. 

[removed] B. operationally define the variables. 

[removed] C. analyze the data. 

[removed] D. interpret the results. 
2.5 Points 
In research on the effects of noise on sleep, a researcher wonders whether disrupted sleep may be due to drinking coffee rather than to living near an airport. What type of hypothesis is this?
[removed] A. A confounding variable hypothesis 

[removed] B. A null hypothesis 

[removed] C. A research hypothesis 

[removed] D. A moot hypothesis 
2.5 Points 
Doyen & colleagues (2012) found that __________ effects were the reason that participants changed their walking speed.
[removed] A. experimenter 

[removed] B. subject 

[removed] C. both subject and experimenter 

[removed] D. neither subject nor experimenter 
2.5 Points 
Which of the following is NOT characteristic of a good research hypothesis?
[removed] A. It is a declarative statement. 

[removed] B. It identifies at least two variables. 

[removed] C. It states a predicted relationship. 

[removed] D. It is in the form of a question. 
Question 39 of 40
2.5 Points