Replication is crucial in science, but it can sometimes yield unexpected results. Hurt a lot. This becomes evident when the facial feedback hypothesis fails replication, a blow to many in psychology. Yesterday, I came across a new replication meta-study on a well-known insight in psychology via a tweet by Stuart Ritchie. The study he discusses … Continue reading Famous psychology study ‘killed by replication’: does a pencil in your mouth make you feel happy?