Refer to the Journal of Articles in Support of the Null Hypothesis (Vol. 6, 2009) study to determine whether video game players have superior visual attention skills over non-video game players, Exercise 1.3. Recall that each in a sample of 65 male students was classified as a video game player or a non-player. The two groups were then subjected to a series of visual attention tasks that included the “field of view” test. The researchers compared the mean test scores of the two groups.

a. What are the experimental units for this study?

b. What type of design is employed? Identify the features (e.g., treatments, blocks) of the design.

c. What is the dependent (response) variable of interest?

d. Write the model for this design.

Data from Exercise 1.3

Researchers at Griffin University (Australia) conducted a study to determine whether video game players have superior visual attention skills compared to non-video game players. (Journal of Articles in Support of the Null Hypothesis, Vol. 6, No. 1, 2009.) Each in a sample of 65 male students was classified as a video game player or a non-player. The two groups were then subjected to a series of visual attention tasks that included the “field of view” test. No differences in the performance of the two groups were found. From this analysis, the researchers inferred “a limited role for video game playing in the modification of visual attention”. Thus, inferential statistics was applied to arrive at this conclusion. Identify the relevant populations and samples for this study.