According to Piaget, which concept do children lack when they are in the preoperational stage?

Suicide attempts are more common in adolescence than in young adulthood

Indicate whether this statement is true or false.

Which of the following statements is true regarding the use of the scientific method?

a. The scientific method uses hypotheses to generate theories, but facts are not relevant because there is no such thing as a true fact. All facts are merely relative, and so they are not important in the scientific method. b. The scientific method is concerned with facts and hypotheses, as we use the gathering of data to confirm or refute hypotheses. Theories are not relevant to the scientific method. c. The scientific method is only concerned with facts, as anything else is merely a form of a guess. d. Facts, theories and hypotheses all have very important functions in the use of the scientific method.