What contributions did the Neo-Freudian make to the field of personality Psychology research that Freud did not?

Question (1)

What contributions did the Neo-Freudian make to the field of personality Psychology research that Freud did not?

How do the research designs of the neo-fruedians differ from Frued’s research design?

How  did the neo-fruedians adress ethic in research?

Each response has to be 1 to 2 paragraphs.