Janelle is trying to find her hat and all her classmates are laughing. can you guess why they are laughing? it's because the hat is on her head! the term psychologists use to describe what has happened is:

Sensory adaptation

Explanation:

Sensory adaptation is a reduction in sensitivity to a stimulus after constant exposure to it. This is the term that psychologists would use to describe Janelle's situation. In Janelle's case, she is insensitive to the fact that she is wearing the hat because she has gotten used to having it and therefore does not feel it anymore. Sensory adaptation, however, also allows us to free up our attention and resources to focus on other less common stimuli around us.