A significant ethical concern is that research can be used by governments or organisations for unethical purposes. Some studies may seem harmless but can have major societal consequences. For instance, research into subliminal messaging led to unethical marketing practices, such as attempts to manipulate consumer behavior by embedding hidden messages in advertising. Additionally, intelligence research has historically been misused to justify racial discrimination and eugenics policies. This highlights the need for careful ethical review, as research findings can be exploited for harmful political or commercial purposes, even if the original intentions were neutral.