An experiment was designed to test a hypothesis that stated that high-drive participants would be able to learn a simple task much more quickly than would low-drive participants. The hypothesis further stated that on a difficult task the opposite result would be true – low-drive participants would learn the difficult task more quickly. The experimenter’s operational definition of drive was participants’ scores on the Manifest Drive Scale. Twenty people who scored high on the scale (high-drive) and 20 people who scored low on the scale (low-drive) were given a difficult task to perform. The low-drive group learned the task more quickly than the high-drive group. The experimenter concluded that the hypothesis was correct