Procedure
The experience sampling questionnaire was administered using a small portable device called a PsyMate (Maastricht University) with a touch-screen that displays questionnaires and records answers. At the initial session participants were shown how to use the PsyMate and completed a practice assessment as well as the PANSS and demographic questionnaire. The PsyMate was used for the next 6 days and was programmed to beep 7 pseudo-random times a day between 8.30 a.m. and 10 p.m. with at least 45 min between beeps. A 20 min window was allowed to complete the questionnaire after the prompt. If the questionnaire was not completed within this time it was recorded as “missed”.