Answer:
mirroring
Explanation:
Mirroring: In psychology, the term "mirroring" is described as the tendency of an individual's behavior in which he or she unconsciously imitates the speech pattern, gesture, or attitude of some other person. However, mirroring may occur in various social situations, specifically in the presence of family and close friends. Mirroring is also considered as a very useful and important behavioral technique that encompasses "copying" the actions or behavior of some other person in specific ways.
In the question above, Ethan’s reaction is an example of mirroring.