Controlling Within-Subjects Designs Libby Compared Different Strategies for Teaching Patients

Multiple Choice

Controlling Within-Subjects Designs Libby compared different strategies for teaching patients to inhale large volumes of air.She observed that subjects generally produced their largest inhalation volumes during the last strategy condition even though she randomized treatment order.Her findings suggest that ____ influenced her results.

A) carryover effects
B) fatigue effects
C) interference effects
D) practice effects