A-A+
One of the differences between cross-sectional
问题详情
One of the differences between cross-sectional research and longitudinal research is that____
A．The latter usually focuses on only one subject, while the former involves groups of subjects
B．The former can be free from the influence of social changes
C．The latter can be free from the influence of social changes
D．The former costs less money and takes less time此题为多项选择题。请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：D
解析：题目问：横向研究和纵向研究的不同点之一是什么?通过阅读文章可知，纵向研究费时、费力，而横向研究省时、省力。“The cross-sectional research design has the clear advantage of being less expensive to conduct and certainly less time-consuming。”所以。答案是D。
