The Persecutory Ideation Questionnaire (PIQ; McKay et al.,
2006; Van Dongen et al., 2011) consists of 10 items scored on a
5-point Likert scale ranging from 0 (not true) to 4 (true). This scale
measures the level of persecutory ideation, and is suitable to be
used as a measure of persecutory ideation in the general population
(McKay et al., 2006; Van Dongen et al., 2011). Total scores
range from 0 to 40, and a higher score refers to more persecutory
ideations. Reliability of this measure in the current sample, as
determined by its internal consistency was good (α¼.89).