High Quality Content by WIKIPEDIA articles! The term Large Group Awareness Training (LGAT) refers to "training" offered by certain groups sometimes linked with the human potential movement. By using LGAT techniques, these providers claim to (among other things) increase self- awareness and bring about preferred personal changes in individuals' lives. Michael Langone has referred to Large Group Awareness Training as new age trainings and Philip Cushman referred to them as mass marathon trainings.Large Group Awareness Training programs often involve more than two hundred people at a time.[citation needed] Though early definitions cited LGATs as featuring unusually long durations, more recent texts describe the trainings as lasting from a few hours to a few days. In 2004, DuMerton, citing "Langone (1989)", estimated that "[p]erhaps a million Americans have attended LGATs".39 Forsyth and Corazzini cite Lieberman (1994) as suggesting "that at least 1.3 million Americans have taken part in LGAT sessions".