Although the Problem of Losing Respondents Over Time Can Be

Multiple Choice

Although the problem of losing respondents over time can be a problem with longitudinal studies,they are often preferable to cross-sectional designs because they can help researchers detect causal effects.The reason longitudinal studies are better able to detect causal effects is that they can

A) document within-person changes.
B) document across-person changes.
C) give respondents a chance to correct earlier responses.
D) give the researcher a good way to test measurement reliability.