Here's a link to the 1988 paper they're disputing http://datacolada.org/wp-content/uploads/2014/03/Strack-et-al-1988-cartoons.pdf http://datacolada.org/wp-conte

Here's a link to the 1988 paper they're disputing http://datacolada.org/wp-content/uploads/2014/03/Strack-et-al-1988-cartoons.pdf http://datacolada.org/wp-content/uploads/2014/03/Strack-et-a... I wonder if it'd make a difference if the pen was horizontal in the participant's mouth, touching both corners of the lips. That's the mental image I walked away with when I read "Thinking, Fast and Slow".