Maria is studying the effects of calcium on the development of children.So,she administers varying levels of calcium to two groups of children,one group consisting of children aged five and the other group consisting of children aged ten.She studies the growth rate of these two groups regularly over a period of one year.On the basis of the given evidence,it would be most accurate to say that Maria is using the _____ research.
A)cross-sectional
B)factorial
C)longitudinal
D)single case experimental

Question

Quizplus · Accepted Answer

Maria is studying the growth rate of two groups of children over a period of one year. This indicates that she is using longitudinal research, which involves studying changes in a group over time. Cross-sectional research involves comparing different groups at one point in time, factorial research involves manipulating multiple independent variables, and single case experimental research involves studying individual cases in-depth.

Maria Is Studying the Effects of Calcium on the Development