When testing a hypothesis, such as ‘talking on a cell phone impairs driving skills, a control condition would be important because if the experiment is not controlled many things may be different and that can skew results making it impossible to determine patterns that correlate to the experiment. You also must be able to repeat the experiment multiple times to see if the results are similar, or you would be unable attain accurate data to prove your hypothesis.
Subjects should be assigned randomly for an experiment like this. Half are assigned to drive while talking on the phone, half are assigned to driving without talking on the phone. The cellphone being the independent variable and driving ability being the dependent. Randomization helps
Subjects should be assigned randomly for an experiment like this. Half are assigned to drive while talking on the phone, half are assigned to driving without talking on the phone. The cellphone being the independent variable and driving ability being the dependent. Randomization helps