Each employer was requested to take a picture of his facial expression for each of basic emotions. They got a list of emotions saying: neutral facial expression, anger, contempt, disgust, fear, happiness, sadness and surprise.
Lets omit the part when it turned out that some of them were not capable of correctly expressing most of the emotions from the list (and had to make another set of images). and focus on one particular employer. He was checking the list between each two pictures he took. At one point one could hear him mumbling,
“OK, so I got sadness, anger, disgust, surprise…what other emotions exist….what other emotions…”
He checked the list and triumphantly concluded,