Dr. Dunn is conducting some research involving a new math learning program. To test the effectiveness of the new math program, he selects two sections of his high school math classes to participant in his study. His 1st period 9th grade math class will be the experimental group and his 4th period 11th grade math class will be the control group. Which of the following confounding variable threats is possible in this example?

Question

Quizplus · Accepted Answer

The selection-maturation threat is possible because the two groups are from different grades (9th and 11th), which means they are likely at different developmental stages or have different levels of prior knowledge, affecting the study's outcomes.

Dr Dunn Is Conducting Some Research Involving a New Math