"mindless social behavior of 'herds'" . "Sheeple" . "herding effect" . . . . "stock market bubbles" . "Common herd" . . "social behavior of 'herds'" . "sheep" . "Sheep" . "Herd Behavior" . . "gregarious" . . "\u201DHerd\u201D" . "herd behavior" . "sheeple" . "Herd behavior#Sheeple" . . "herd" . "pack mentality" . "the herd" . . "Herd behavior" . "herd or self-coordinating behavior" . . "Herd_behavior" . "herd mentality" . . "Herd instinct" . "Herd behavior" . . "herd-like behavior" . "herd their trading behaviour and decisions" .