What is one of the most common physiological symptoms following an abortion performed within the first trimester?

Public health researchers attribute the decline in the death rates from cancer to __________

a) a decrease in psychological stress. b) a reduction in the number of people who smoke. c) earlier detection of cancer. d) better treatment of cancer.

According to an information processing perspective, how can changes in processing capacity explain age differences in performance on the Piagetian conservation problems?

A) Relative to older children, younger children's lower processing capacity may make it more difficult for them to think about two or more aspects of the problem (e.g., height and width) at the same time. B) Relative to older children, younger children's lower processing capacity may enable them to more easily reverse certain operations. C) Relative to older children, younger children are better able to mentally reverse operations because they are "centered" on only one aspect of the problem at a time. D) Relative to older children, younger children are better able to switch their attention back and forth between two different aspects of the problem.