1. Given the Hypothesis: Exercise is related to levels of stress, answer the following questions:
1) State a prediction based on the above Hypothesis.
2) Which method (experimental or nonexperimental) would you use to test this hypothesis? Why?
3).Which is the independent or “cause” variable and which is the dependent or “effect” variable?
4) State an operational definition for each variable. If experimental, describe how the independent variable might be manipulated and the dependent variable measured. If nonexperimental, describe how both variables might be measured.
2. For an Experimental Design at below, please answer the following questions:
Participants participated in a driving simulation study to investigate night-driving reactions as a function of alcohol consumption and road conditions. Participants drank “cocktails” containing either no alcohol, 3 ounces of alcohol, or 6 ounces of alcohol. After 30 minutes, they began the driving simulation test. Each participant simulated a drive on a straight road, a road with gentle curves, or a road with many sharp curves and on which the participants encountered various road hazards. Driving speed and the number of accidents were measured.
1) Identify the design (e.g., 2 X 2 factorial).
2) Identify the total number of conditions.
3) Identify the manipulated variable(s).
4) Is this an IV X PV design? If so, identify the participant variable(s).
5) Is this a repeated measures design? If so, identify the repeated variable(s).
6) Identify the dependent variable(s).