Which of the following describes a risk associated with cross-sectional research on iq? in a cross-sectional study, the researchers incur significant expenditure of time as he or she waits for the participants to get older. in a cross-sectional study that compares iq scores, the difference in iq scores of 25-year-olds and 45-year-olds is due to differences in educational attainment. in a cross-sectional study, the participants may move or die before the study has been completed. in a cross-sectional study that compares iq scores, the difference in iq scores of 25-year-olds and 45-year-olds is due to the 45-year-olds having taken the same test at several points in time.

What were some characteristics of the yamato culture select all that apply a. it was a very weak empire with little knowledge of trade b. it believed its people were descended from kami the sun goddess c. it allowed woman to hold positions of power d. it developed technologies that improved life and increased trade e. its leader tokugawa brought peace to japan

Many scholars and observers have argued that the ratification of the fourteenth amendment to the constitution has become the single most important act in all of united states politics. (a) identify which provision of the fourteenth amendment was applied to the following supreme court cases. for each case, explain the significance of the decision in united states politics. ' mapp v. ohio (1961) ' gideon v. wainwright (1963) (b) identify which provision of the fourteenth amendment was applied to the following supreme court cases. for each case, explain the significance of the decision in united states politics. ' brown v. board of education (1954) ' baker v. carr (1962) ' regents of the university of california v. bakke (1978)

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a researcher conducts a comparison of the comments made in a publicly available blog and the blogger's comments on a similar topic in a weekly magazine. undergraduate students in a field methods class are assigned a research question and asked to interview another classmate, to be followed by a class discussion on interview techniques. a cognitive psychologist enrolls undergraduate students for a computer-based study about the effect of mood on problem-solving behaviors. a researcher sets up a meeting with the superintendent of a large and diverse public school system to get data about the ethnic composition of the school system and the number of students receiving free lunches.