A Researcher Assesses the Reading Level of Third-Graders on the First

Multiple Choice

A researcher assesses the reading level of third-graders on the first of every month for three months prior to administering a new reading program and for three months following the program. This study is an example of a(n) ____.

A) time-series design
B) interrupted time-series design
C) cross-sectional design
D) longitudinal design