Tyrel is testing whether exposure to political news causes people to be more opinionated. for each participant, tyrel flips a coin and places all the heads in one group and all the tails in another. the heads group watches 20 minutes of political news, while the tails group watches 20 minutes of local nonpolitical news. afterward, all participants write a persuasive essay and tyrel measures how strongly and how many times they state their opinions. which descriptions apply?

The president’s role in a political party is to set the legislative agenda true or false

The health care system in is referred to as a singleminus−payer health care system, and is a system in which the government provides national health insurance to all residents.

It is widely assumed that people need to engage in intellectual activities such as solving crossword puzzles or mathematics problems in order to maintain mental sharpness as they age. in fact, however, simply talking to other people—that is, participating in social interaction, which engages many mental and perceptual skills—suffices. evidence to this effect comes from a study showing that the more social contact people report, the better their mental skills. which of the following, if true, most seriously weakens the force of the evidence cited? (a) as people grow older, they are often advised to keep exercising their physical and mental capacities in order to maintain or improve them. (b) many medical conditions and treatments that adversely affect a person's mental sharpness also tend to increase that person's social isolation. (c) many people are proficient both in social interactions and in solving mathematical problems. (d) the study did not itself collect data but analyzed data bearing on the issue from prior studies. (e) the tasks evaluating mental sharpness for which data were compiled by the study were more akin to mathematics problems than to conversation.