The VISQ is an 18 item self-report instrument measuring the phenomenological proprieties of inner speech along four dimensions: Condensed (α = 0.72; “I think to myself in words using brief phrases and single words rather than full sentences”); Dialogic (α = 0.85; “I talk back and forward to myself in my mind about things”); Other People (α = 0.85; “I experience the voices of other people asking questions in my head”); Evaluative/Motivational (α = 0.76; “I experience the voices of other people asking questions in my head”). Participants have to rate a 6-point Likert scale anchoring from “certainly does not apply to me” (1) to “certainly applies to me” (6).