The two halves of the cerebral cortex are interconnected by the _______

In the context of writing questionnaire items, which of the following is a general guideline that should be followed when writing restricted items?

A. If respondents are asked to rank alternatives, the list should be relatively long. B. Items on a list should be mutually inclusive. C. When asking either/or questions, either the positive or the negative pole should be included in the question. D. If respondents need to choose from a list of items, all options must be included.

Which of the following statements is true about the effects of prescription and nonprescription stimulants on memory?

A. The negative effects of prescription drugs such as Adderall or Ritalin happen only in low doses. B. Caffeine in general and over-the-counter energy drinks have no effects in their capacity to enhance memory. C. Higher doses of prescription stimulants can actually interfere with and block memory formation. D. There is nonclinical trial evidence that long-term, foods and drinks rich in flavonoids reduce memory and impair cognitive function.