Question

Question 462 pts

In between-subjects designs, random assignment distributes participants' individual differences across experimental conditions. This allows researchers to assume that:

Group of answer choices

no condition has an overall advantage relative to the other conditions.

groups of participants do not influence each other.

bias is not a concern in the experiment.

groups of participants are equal.

Answer 1

Correct answer:

The correct options are 'no condition has an overall advantage relative to the other conditions' and 'bias is not a concern in the experiment'.

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Explanation:

While designing a between-subjects experiment, the following key points should be kept in mind:

• 'Assignment bias' is a threat to internal validity of the treatments being employed.
• Large individual differences can lead to large variance within the treatments.
• One can increase the likelihood of finding a difference between the treatment conditions by taking steps to minimize variance within control groups.

Assigning the subjects randomly to their groups is an attempt to control participant variables so they don't become confounding variables, which allows the researchers to assume that no condition has an overall advantage over othe other conditions during treatment.

Assigning the subjects randomly to their groups also eliminates the possibility of 'assignment bias', which allows the researchers to assume that bias is not a concern in the experiment.

Hence, both the options are correct.

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Hope this helps!