When contacting respondents on their cell phones, researchers sometimes ask them whether they are in a safe and relaxed environment where they can adequately respond to the questions. A downside of doing this is: Question 46 options: it gives the respondent a ready-made excuse to refuse to participate. it takes up too much time in the interview. it will increase the response rate too much. it reduces rapport between interviewer and respondent.

The process of rocks breaking down and becoming other rocks

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.

How does the chairman of the federal reserve board get his job?