Table 3.

Correlations between symptom ratings and ERP amplitudes

		Reality Distortiona	Negative Symptomsb	SANS Total
Response negativity	100% post-learning	.35.	.02	.14
	80% post-learning	.43..	-.03	.03
Feedback negativity	100% pre-learning	.16	.42..	.34.
	80% invalid pre-learning	.15	.42..	.33.
	80% invalid post-learning	.09	.33.	.40..
	80% valid post-learning	.13	.39.	.24
	50% post-learning	.10	.34.	.41..

^..p < .05 (two tailed)

^.p < .1 (two tailed)

^aSum of BPRS ratings on suspiciousness, hallucinations, unusual thought content, and grandiosity items (range 4-17)

^bSum of BPRS ratings on blunted affect, emotional withdrawal, and motor retardation items (range 3-20)

BPRS: Brief Psychiatric Rating Scale

SANS: Scale for the Assessment of Negative Symptoms

Note: Positive coefficients indicate that higher/more severe symptom ratings are associated with smaller/less negative ERP amplitude.