Grace conducts research on race and achievement in mathematics. She designs a study to see if a new intervention she designed increases African-American students' math achievement scores. She goes to a local school with a representative Aftrican-American student population and randomly assigns college-bound African-American students to the intervention or to a control condition. Grace gives a mathematics achievement test in September to both groups. Through the academic year the treatment condition receives the intervention. She uses end of year achievement tests to see if there are differences between conditions.
-Which of the following best represents the design of Grace's study?
A) One shot case study
B) One-group pretest-posttest
C) Pretest-posttest control group
D) Two by two factorial

Question

Quizplus · Accepted Answer

Grace's study design is a pretest-posttest control group design because she randomly assigns students to either the intervention or control condition and gives both groups a pretest before the intervention. Then, the treatment group receives the intervention and both groups take a posttest at the end of the academic year to see if there is a difference in math achievement scores between the groups. This design allows for comparisons between the groups and the pretest helps to control for potential differences between the groups prior to the intervention.

Grace Conducts Research on Race and Achievement in Mathematics