A friend of yours has recently grown a beard. When you encounter him, you realize at once that something about his face has changed, but you are not certain what has changed. We can conclude from this that:

Question

Quizplus · Accepted Answer

The fact that the person is uncertain about what has changed in their friend's face suggests a decrease in fluency in facial recognition. This could be due to changes in the friend's appearance (such as the addition of a beard), which makes it more difficult for the brain to quickly identify the familiar face.

A Friend of Yours Has Recently Grown a Beard