32. A researcher splits participants in an experiment into four randomly selected groups. The first is given two hints and 10 minutes to complete a test. Another group is given two hints and 5 minutes... The third group is given 10 minutes with only one hint. The last group is given 5 minutes with only one hint. The mean test score for each group is measured. What is an example of a factor in this experiment by the researcher?
Answer: B
The number of hints is an example of a factor in this experiment.
In this experiment, the number of hints provided to participants is a key factor that influences the outcome of the test scores. It serves as an independent variable that the researcher manipulates to observe its effect on the participants' performance.
A) 5 minutes
While 5 minutes is a time constraint for one of the groups, it is not a factor that the researcher is manipulating across all groups. Time is one of the controlled variables rather than an independent factor affecting the outcome of the experiment.
B) The number of hints
This option is correct because the number of hints is systematically varied among the groups, making it a direct factor in the experimental design. The researcher aims to determine how different amounts of hints impact participants' test scores, which is central to the study.
C) One hint and 10 minutes
This option describes a specific condition of one of the groups rather than a factor that influences the entire experiment. It combines elements of time and hint number but does not represent a single variable being manipulated across the groups.
D) A test score
The test score is the dependent variable that results from the manipulation of the independent variables (like the number of hints and time given). It is not a factor that the researcher alters; rather, it is a measure of the outcome of the experiment.
Conclusion
The number of hints provided is definitively the correct answer as it is the variable being manipulated to assess its effect on test performance. Other options either describe conditions or results rather than factors that influence the experimental outcomes. This highlights the importance of identifying independent variables in experimental research.