A group of researchers is investigating risk for heart disease among people of African descent in the United States and people in Africa. Which risk factor will they find to be highest in urban African Americans?

Why is subjectivity considered a problem in qualitative research?

a) Because of the concern for high external validity b) Participants typically offered biased responses c) Researchers may overly bias interpretation of the findings d) Researchers discuss research findings with their colleagues

Which type of operant reinforcer produces comfort, ends discomfort, or fills an immediate physical need?

a. natural feedback b. token reinforcer c. primary reinforcer d. secondary reinforcer