Table 1.

Clinical and demographic information: means (SD) and numbers of participants (n = 13).

Age	44.6 (10.2) years
Sex	7 Male 6 Female
Ethnicity	6 (46.2%) White 4 (30.8%) Black African 1 (7.7%) Black Caribbean 1 (7.7%) Asian 1 (7.7%) Other
Diagnosis	7 (53.8%) Schizophrenia 4 (30.8%) Schizo-Affective Disorder 1 (7.7%) Delusional Disorder 1 (7.7%) Unspecified Nonorganic Psychosis
Duration of illness	16.73 (9.1) years
Self-reported duration of primary delusion	13.75 (7.5) years
Previous experience of CBT	12 (92.3%)
Medication	13 (100%)
Participants showing the JTC bias	6 (46.2%)
Full scale IQ	88.93 (16.4)
DASS total score	55.23 (24.02)
PANSS positive symptom scale	22.92 (3.90)
PSYRATS total score	17.77 (2.68)

Key: DASS = Depression Anxiety Stress Scales; PANSS = Positive and Negative Syndrome Scale; PSYRATS = Psychotic Symptoms Rating Scale.