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1 Process of Science a. that it agrees with the hypothesis b. that statistical tests showed significantly more weight loss in the participants who used the weight-loss product than those who relied on diet and exercise c. that all the participants lost at least 10 pounds d. that only the participants who used the weightloss product lost weight e. that the participants who used the weight-loss product lost an average of 3 pounds, while the participants that used diet and exercise lost an average of 2 pounds investigate important issues in human health?
There are a number of ways in which a hypothesis can be tested. One is to design a controlled experiment. In this case, you might measure the effects of coffee drinking on a group of participants. In 2002, Lee Ryan, a psychologist at the University of Arizona, decided to do just that. Ryan noticed that memory is often optimal early in the morning in adults over age 65 but tends to decline as the day goes on. She also noticed that many adults report feeling more alert after drinking caffeinated coffee.
Statements of opinion and hypotheses that depend on supernatural or mystical explanations that cannot be tested or refuted fall outside the realm of scientific explanation. ) With a clear scientific hypothesis in hand—“caffeinated coffee improves memory”—the next step is to test it, generating evidence for or against the idea. If a hypothesis is shown to be false—if the finding is “caffeinated coffee does not improve memory”—the hypothesis can be rejected and removed from the list of possible answers to the origi- nal question.