After clearing the written test in CDSE, the candidates have to go through a series of personality tests, which is called the Service Selection Board (SSB INterview). This interview commonly known as SSB has different types of tests to judge the personality of a candidate. SSB Interview is conducted in 2 stages. Stage 1: Officer Intelligence Rating Test(OIR) & Picture Perception and Discussion Test(PPDT). Stage 2: Psychological Tests, Group Tasks, Personal Interview & Conference.