“…In short, we propose that the AT.9 can be utilized to measure the level of sophistication of integrative and interpersonal experience in the unconscious dimensions of a person’s mind since “[the AT.9] attempts to measure the non-rational dimensions of a person’s interpersonal complexity” ( Kam and Bellehumeur, 2021 , p. 176). As a projective test, it assesses unconscious content ( Cervone and Pervin, 2019 ) by taking into account symbolic and archetypal material, both of which involve aspects of one’s unconscious ( Cook-Greuter, 1999 ; Schlamm, 2014 ). From these qualities, the AT.9 can help researchers operationalize a person’s non-rational capacity toward complexity since the narrative patterns, mythopoetic elements, and degree of multi-layered paradoxical organization in a person’s unconscious imagination is assessed.…”