Answer:
the spotlight effect
Step-by-step explanation:
The spotlight effect: The term spotlight effect is defined as the phenomenon that leads an individual to believe that he or she is being noticed or watched excessively but in reality, it is not true. A person dealing with the spotlight effect is continuously the center of attention of one's world or self-centered rather than the degree to which the person is being noticed by the other person.
In the question above, Lydia's reaction best illustrates the spotlight effect because she is being conscious of her mismatched socks and overestimated the fact that others would notice her socks as well.