Many cognitively demanding jobs (e.g., air traffic controller, radar/sonar operator) require efficient processing of visual information. Researchers at Georgia Tech investigated the variables that affect the reaction time of subjects performing a visual search task (Human Factors, June 1993). College students were trained on microcomputers with one of two methods: continuously consistent or adjusted consistent. Each student was then assigned to one of six different practice sessions. Finally, the consistency of the search task was manipulated at four degrees: 100% consistency, 67%, 50%, or 33%. The goal of the researcher was to compare the mean reaction times of students assigned to each of the 2 × 6 × 4 = 48 (training method) × practice session × (task consistency) experimental conditions.

a. List the factors involved in the experiment.

b. For each factor, state whether it is quantitative or qualitative.

c. How many treatments are involved in the experiment? List them.