A researcher was interested in the effects of sexual arousal on the ability to concentrate, and also wondered whether gender and age were important factors. The researcher had participants read passages that were low, medium, or high in arousal content. The participants included both males and females and were divided into three age categories (18-24, 25-35, and 36-50 years). After reading the passage, participants were asked to perform a proofreading task. The researcher measured the number of errors detected on the task. 7. Identify the design: 8. Identify the number of conditions: 9. Type of design: