According to the results of Mary Ainsworth's studies, about what percent of children raised in the United States experience secure attachment relationships with their caregivers?

One of the largest problems confronted by the medical profession is

a. the delay in receiving treatment by people who need it. b. the increase in the use of homeopathic intervention. c. the lack of adequate training in areas of specialties. d. the overuse of emergency room facilities by people who do not need it.

Given the research on cognitive errors and biases, it can be concluded that ____

a. people are not nearly as smart as they are usually given credit for b. people can be extremely unpredictable in terms of when and why they will engage in rational versus irrational decision-making styles c. people rely on irrational thinking much of the time, but are still capable of engaging in careful, conscious thought when they need to make important decisions d. these errors are extremely serious, and tend to have cumulatively biasing effects across time