Answer:
contextual stimuli
Step-by-step explanation:
Contextual stimuli refers to such a situation wherein an individual's behavior varies as per the context or as per the situation.
Stimuli refers to stimulation induces an individual to act in a certain way.
In the given case, John behaves differently in both the situations i.e when he is alone or while he is surrounded by his friends. Both the situations extract different sort of reactions.
When he is surrounded by his friends, his reactions are governed by social factor and his social presence. Such reaction could also arise when an individual seeks social recognition and in such events ignores the content being derogatory or mocking.
When the same individual is alone with her, he acts naturally since the social factor does not exist.