Question

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.

Answer 1

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.

Step-by-step explanation:

In cross sectional research the subjects will be tested more than once on different time in order to measure whether there is a change in those time period.

When studying IQ, this type of research could skew the data because IQ can be influenced by the things that we read/we learn. So if there is a change in IQ, the change might not be caused by natural occurence.