Appendix.

Self-Disorder Scale, Item Composition³⁶

Copenhagen Interview of Functional Illness (Section and Item Code)46	Content
Personality exploration—11	Gender identity problems/anxiety of being homosexual (refers not to homosexuality but to pervasive lack of identity)
Personality exploration—12a	Identity disturbance, does not know who he/she is (like a sense of being extraterrestrial)
Personality exploration—12b	Often feels self is different at different times (as numerically different)
Personality exploration—12c	Frequent shifts in opinion about how he/she should live life (loss of natural engagement, hyperreflexivity)
Subjective experience—25	Feels perplexed, confused, or has lost feelings of the world's naturalness or meaning
Subjective experience—28	Has lost leniency and needs to reflect on the simplest things (hyperreflexivity)
Subjective experience—47	Feels he/she has no feelings for him/herself and/or the world
Subjective experience—48	Feels that he/she is not really alive
Subjective experience—51	Thought block
Subjective experience—52	Thought emptiness
Subjective experience—54	Feels that he/she is disappearing
Subjective experience—55	Feels that there are no boundaries between him/herself and the surroundings
Subjective experience—71	Feels he/she has lost all feelings of pleasure (anhedonia)
Subjective experience—87	Feels like a stranger to him/herself
Subjective experience—74	Loss of thought control
Subjective experience—75	Thought pressure
Subjective experience—76	Thoughts are felt strange and anonymous
Subjective experience—82	Thought can be apprehended by others
Subjective experience—89	Feels that his/her appearance changes when he/she looks in the mirror
Subjective experience—98	Feels it is necessary to concentrate on body movements that normally are completed automatically and without reflection