Essica acts so differently with her parents than with her girlfriends that she often thinks her personality is completely phony. erik erikson would have suggested that jessica is experiencing:

Erik Erikson would have suggested that Jessica is experiencing "role confusion".

Individuals who end up in role confusion regularly feel disappointed and sort of drift starting with one thing then onto the next. They may experience difficulty making sense of what they need from life or relationships.  

But most importantly, individuals in role confusion don't create loyalty, which Erikson characterized as having the capacity to identify with individuals in a true, real manner. Great connections have a solid establishment of loyalty.

manifest functions are the recognized and intended consequences of any social pattern, while latent functions are those unrecognized and unintended consequences. to analyze the manifest functions of any social institution, we have to study its contribution to the continuation of a group, community, or society.