In 1961, President John F. Kennedy and his advisers decided to invade Cuba with 1400 CIA-trained Cuban exiles. When the invaders were easily captured and soon linked to the U.S. government, Kennedy wondered in hindsight, "How could we have been so stupid?" This is an example of: Please choose the correct answer from the following choices, and then select the submit answer button. groupthink. group polarization. deindividuation. social facilitation.