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?

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This is a one-group pretest-posttest design, as the group of fourth graders were tested both at the beginning of the year (pretest) and at the end of the year (posttest) after receiving an intensive reading program designed to improve their skills. This type of design allows for the comparison of the group's performance before and after the intervention, providing evidence for the effectiveness of the program.

A Researcher Administers a Reading Test to a Group of Fourth