Mass media communications are somewhat effective in changing public opinion about health behaviors

According to recent studies, which of the following is true of centenarians?

The level of education is unrelated to the life span of centenarians. In developed countries, the number of centenarians is decreasing at a rate of approximately 7 percent each year. China has the most centenarians, followed by Brazil, Canada, and Australia. Chronic high-mortality diseases are markedly delayed for many years in centenarians.

In an institution for delinquent adolescents, a behavioral system has been implemented in which the adolescents earn points for target behaviors like getting up on time, making beds, and attending class. They are allowed to exchange their earned points for privileges, activities, etc. They are also charged tokens for inappropriate behaviors, such as staying in bed or fighting. This system is

called a. systematic desensitization. b. a vicarious learning model. c. a token economy. d. a hierarchy of needs.