In the context of psychological research, ethical guidelines serve as essential protocols to ensure the safety and well-being of research participants. One key principle established by organizations such as the American Psychological Association (APA) is the requirement for informed consent. This principle mandates that participants fully understand the nature of the research and any potential risks involved before agreeing to partake. Additionally, ethical guidelines emphasize the importance of debriefing after participation, specifically if any deception was involved during the study. Which of the following scenarios illustrates a violation of ethical guidelines related to informed consent in psychological research?