Which of the following symptom is not one among the 4 'A's of Bleuler?

Auditory Hallucination is Pathognomic of Schizophrenia, but not one among the 4 'A's given by Eugene Bleuler. Gave 4'A's of Schizophrenia Autistic behaviour: is characterized by irrational thinking and withdrawn behaviour. Ambivalence: Inability to take decision Association loss or Derailment: There is loss of connection between individual throught process the speech of patient is disorganized. Affect Disturbance / Affective Flattening: Emotional disturbances.