When to Use Large N and Small N Designs Matt

When to Use Large N and Small N Designs Matt is impressed by the precision of the small N approach and declares, "The small N design is so powerful I'll use it for all my experiments!" Some researchers might disagree with him because small N designs

A) achieve low internal validity.
B) cannot be analyzed using inferential tests.
C) may achieve lower external validity than well-designed large N designs.
D) provide limited control over extraneous subject variables.