A Researcher Is Interested in the Development of Stereotypes in Children

Multiple Choice

A researcher is interested in the development of stereotypes in children. He collects data from 5-, 7-, 9-, and 11-year-olds during the fall of one year. He then waits two years and collects data again from the same participants, and then again after another two years. He can then compare children across the different age groups as well as the development of stereotypes within the children themselves across three different time periods. This is an example of what type of design?

A) sequential design.
B) double-blind design.
C) cross-sectional design.
D) longitudinal design.