Scale for the Assessment of Positive Symptoms (SAPS).The SAPS is a 35-item, 6-point (0–5) rating instrument for the assessment of the positive symptoms of psychosis. Symptoms over the last month were rated. Higher scores indicate the presence of greater levels of positive symptoms.
Beck Anxiety Inventory. The Beck Anxiety Inventory (BAI) is a self-report 21-item, 4-point (0–3) scale for the assessment of anxiety over the past week. Higher scores indicate higher levels of anxiety. The cut-offs for the scale are non-anxious (0–9), mild (10–18), moderate (19–29), and severe range (30+).
Beck Depression Inventory-II. The Beck Depression Inventory-II (BDI-II) is a self-report 21-item, 4-point scale (0–3) for the assessment of depression over the past fortnight. Higher scores indicate higher depression. Birchwood et al report a high correlation (r = .91) between the BDI and the interview-based Calgary Depression Scale for Schizophrenia.40 The cut-offs for the scale are minimal (0–13), mild (14–19), moderate (20–29), and severe (29+).
Scale for the Assessment of Positive Symptoms (SAPS).The SAPS is a 35-item, 6-point (0–5) rating instrument for the assessment of the positive symptoms of psychosis. Symptoms over the last month were rated. Higher scores indicate the presence of greater levels of positive symptoms.Beck Anxiety Inventory. The Beck Anxiety Inventory (BAI) is a self-report 21-item, 4-point (0–3) scale for the assessment of anxiety over the past week. Higher scores indicate higher levels of anxiety. The cut-offs for the scale are non-anxious (0–9), mild (10–18), moderate (19–29), and severe range (30+). Beck Depression Inventory-II. The Beck Depression Inventory-II (BDI-II) is a self-report 21-item, 4-point scale (0–3) for the assessment of depression over the past fortnight. Higher scores indicate higher depression. Birchwood et al report a high correlation (r = .91) between the BDI and the interview-based Calgary Depression Scale for Schizophrenia.40 The cut-offs for the scale are minimal (0–13), mild (14–19), moderate (20–29), and severe (29+).
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