10 Questions
| Attempts: 345

Questions and Answers

- 1.Cause and effect relationships can be determined by using:
- A.
Case studies

- B.
Controlled expiriments

- C.
Observational research

- D.
Analogue expiriments

- 2.Correlations are an improvement over case studies because from correlations we can determine:
- A.
The reliability of a relationship

- B.
Cause and effect

- C.
Whether a third variable is responsible for the relationship

- D.
The effecdts of a dependent variable

- 3.A correlation coefficient can be used to determine whether:
- A.
There is a relationship between two variables

- B.
Changes in one variable cuase changes in another variable

- C.
One variable confounds another variable

- D.
The relationship between two variables due to a third variable

- 4.Levels and education and income are generally
- A.
Positively correlated

- B.
Uncorrelated

- C.
Negatively correlated

- D.
Perfectly correlated

- 5.Which of the following correlations indicates the weakest relationship between two variables?
- A.
-.22

- B.
+.65

- C.
-.74

- D.
+.19

- 6.In experiments, participants are randomly assigned to conditions to avid:
- A.
Placebo effects

- B.
Differences between the gruops that are due to the independent variable

- C.
Experimenter expectations

- D.
Differences between the groups that are not due to the independent variable

- 7.A good way to study the effects of genetic factors on aggression would be to:
- A.
Compare the elvels of agression across different biological families

- B.
Do a longitudinal study in which agression is mesaured over a long period of time

- C.
Compare the levels of agression in adopted children to the levels of agression in their biological and their non biological parents

- D.
Study the similarities among adoptees and their biological parents

- 8.The__________ effect is the result of expectations.
- A.
Confound

- B.
Placebo

- C.
Validity

- D.
Generalizability

- 9.A distribution has scores of 5, 6, 10, 10, 10, 14, and 40. In this distribution, what two measures of central tendency are the same?
- A.
Mean and variance

- B.
Median and mode

- C.
Median and mean

- D.
Mean and mode

- 10.Increases in arousal are stimulated by the ______ branch of the nervous system, whereas decreases in arousal are stimulated by the _____ branch of the nervous system.
- A.
Central, peripheral

- B.
Sympathetic, parasympathetic

- C.
Peripheral, central

- D.
Somatic, autonomic

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