Answer:
Sullivan
Explanation:
Harry Stack Sullivan was trained in psychoanalysis but soon he drifted from the psychoanalysis belief while retaining the Freud core concepts. Hence Sullivan focuses on both the part of personality such as social personality and as well as the cognitive personality of a person. This moved him from Freud's psycho-sexual development and towards a more eclectic approach. Sullivan saw the anxiety as the external and existing only due to the social interaction. He describes the techniques tools that defense mechanism that helps in reducing the anxiety. Selective inattention is one of the mechanism through that a person can reduce the anxiety.