SCAS Reliability: 

Co-efficient alpha
	Spence (1998) N =  2052	Spence, Barrett & Turner (2003) N = 875	Muris (2000) N = 1011	Muris (2002) N = 521
Panic/agoraphobia	0.82	0.80	0.81	0.83
Social phobia	0.70	0.72	0.73	0.75
Separation anxiety	0.70	0.71	0.74	0.62
Generalised anxiety	0.73	0.77	0.77	0.81
Obsessions/compulsions	0.73	0.75	0.75	0.76
Fear of physical injury	0.60	0.60	0.57	0.54
Total score	0.92	0.92	0.92	0.9

Test-retest reliability
	Spence (1998) N= 344 6 months	Spence, Barrett & Turner (2003) N = 362 12 weeks
Panic/agoraphobia	0.45	0.51
Social phobia	0.57	0.75
Separation anxiety	0.57	0.52
Generalised anxiety	0.56	0.66
Obsessions/ compulsions	0.53	0.69
Fear of physical injury	0.54	0.59
Total score	0.60	0.63

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