Large Group Awareness Training or LGAT is a mechanism for promoting awareness change and rapid, thorough commitment to a cause or idea. LGATs tend to be brief but intense sessions of a few hours or days in which, ideally, participants adopt the message of the 'training' promptly and enthusiastically.

Critics see the classic LGAT as utilizing peer pressure and group dynamics in a high-pressure sales environment that promotes uncritical psychobabbling togetherness and thus markets nebulous memes, and as fostering a propensity to recruit new participants into a participation-oriented pyramid scheme under the guise of providing useful training.

Others see LGAT as a group mind methodology that can be used to accelerate training in specific skills. Improvisational comedy is an example of a skill that is, typically, taught via group-awareness training.