A Researcher Administers a Reading Test to a Group of Fourth

Multiple Choice

A researcher administers a reading test to a group of fourth graders at the beginning of the school year.During the year,the students receive an intensive program designed to improve reading skills.At the end of the year,the reading test is given again,and a large improvement in test scores is discovered.What type of study is this?

A) One-group posttest-only design
B) One-group pretest-posttest design
C) Non-equivalent control group design
D) Time series design