Topic Test Answers

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10

The control group in an experimental study will __________.

A
be excluded from the results of the experiment if they contradict the hypothesis
B
receive no treatment during the experiment
C
be informed at the outset of the experiment that they are the control group
D
receive the same treatment as the experimental group
14

Which of the following is an example of convenience sampling?

A
intentionally surveying a population of men about football preferences instead of women in order to focus more on the male response
B
a dentist surveying patients about toothpaste preference
C
taking data from a random selection of people across the country on television program preferences
D
surveying college students from ten different universities on academic rigor over ten years
16

What is the difference between the control group and the experimental group in an experimental study?

Answer:

The experimental group receives the independent variable or treatment being studied. The control group does not receive the experimental treatment, so researchers can compare the two groups and determine the treatment's effect.

24

Describe the difference between convenience sampling and quota sampling.

Answer:

Convenience sampling involves selecting people who are readily available and easy to reach. Quota sampling involves selecting participants until predetermined numbers or proportions for particular categories are filled, such as equal numbers of men and women.

26

Describe what it means when psychologists state that scientific theories must be supported by empirical evidence.

Answer:

Responses may vary but should include some or all of the following information: In order for a fact or hypothesis to be considered scientific, it must be falsifiable; if it were not falsifiable, it would mean it wasn’t testable or replicable and therefore was not based on objective observation. Anything which cannot be tested is not able to be tested by the scientific method and cannot be used to build more complicated theories. Responses may vary but should include some or all of the following information: Stating that a scientific theory must be supported by empirical evidence means that the theory must be supported by testing it out through research. If research results demonstrate that the psychological claim has been backed by data in a significant manner then accuracy for the theory is established and the theory is said to be backed by empirical evidence.

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