Professor Sandis Is Interested in the Development of Cognitive Abilities

Multiple Choice

Professor Sandis is interested in the development of cognitive abilities. So he designs a research study using a cross-sectional design. He considered a longitudinal design, but it was too time consuming. To avoid any interpretation problems, he should consider using

A) a mixed methods design
B) a sequential design
C) a non-random replacement design
D) an individual design
E) a multiple treatment design