In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Q: Question: According to Tyrer's classification (1989), what type of dissociation does psychogenic amnesia (dissociative amnesia) belong to ?:
Options: <1> The dissociation of the personality. <2> The dissociation of cognitive function. <3> The dissociation of perception. <4> The dissociation of movement or sensation. <5> The dissociation of complex behaviors.
A:
2