Manipulation checks

Independent and Dependent Variables An independent variable is a factor that is manipulated in an experiment.? The experimenter controls whether or not subjects are exposed to the independent variable.?? The dependent variable is measured to determine if the manipulation of the independent variable had any effect.? For example,?? to test a hypothesis that eating carrots improves vision, the experimenter would manipulate whether or not subjects ate carrots.? Thus, eating carrots is the independent variable.? Each subject?s vision would be tested to see if carrot eating had any effect.? Thus, vision is the dependent variable.? The subjects assigned to eat carrots are in the experimental group, whereas subjects not eating carrots are in the control group. ?