Table 3.

Partial correlations between clinical, neurocognitive and physiologic measures

PANSS symptoms	Stress Measure	SCZ Patients
		r	P	df
PANSS Positive	HP_BeforeStress	−0.69	0.02	16
	HP_DuringStress	−0.59	0.01	16
	HP_AfterStress	−0.58	0.01	16
Neurocognitive Measures		Combined Groups
CPT D-prime	HP_BeforeStress	0.40	0.02	33
	HP_AfterStress	0.34	0.04	33
	HP_StressOnset	−0.41	0.02	31
	HP_Recovery	0.42	0.01	31
AVLT_recall	HP_Recovery	0.39	0.03	30
AVLT_delayed recall	HP_Recovery	0.34	0.04	34
AVLT_recog	RSA_BeforeStress	0.32	0.05	36
	HP_Recovery	0.35	0.04	34
Stroop	HP_BeforeStress	−0.36	0.03	36
	HP_StressOnset	0.36	0.03	34
Executive Function Score	HP_BeforeStress	0.40	0.02	33
	HP_AfterStress	0.34	0.04	33
	HP_StressOnset	−0.36	0.04	31
	HP_Recovery	0.46	0.01	31
Memory Score	HP_Recovery	0.38	0.03	30
	RSA_Recovery	0.43	0.01	30
		Controls
CPT D-prime	HP_Recovery	0.5	0.04	15
AVLT_delayed recall	HP_BeforeStress	−0.46	0.05	17
AVLT_delayed recall	HP_DuringStress	−0.51	0.03	16
AVLT_recog	RSA_Recovery	0.73	0.001	15
Executive Function Score	RSA_Recovery	0.57	0.02	15
Memory Score	HP_Recovery	0.55	0.03	13
		SCZ Patients
AVLT_recall	RSA_StressOnset	−0.5	0.05	14

Abbreviations: HP: heart period (milliseconds); RSA: respiratory sinus arrhythmia (ln(ms²); HP_StressOnset: change in heart period during the onset of stress; HP_Recovery: change in HP during recovery; RSA_Recovery: change in RSA during recovery; PANSS: Positive and Negative Syndrome Scale

^aContinuous Performance Test (CPT) - average sensitivity index (d′)

^bAuditory Verbal Learning Test (AVLT) - total recalled

^cAuditory Verbal Learning Test (AVLT) - recalled after delay

^dAuditory Verbal Learning Test (AVLT) - total recognized after delay

^eStroop interference score (seconds) = Incongruent color words - [(congruent color words*color naming)/(congruent color words+color naming)]

^fExecutive Function Composite score = reversed Stroop interference z-score + CPT-d′ z-score

^gMemory Composite score = AVLT(recall, delayed recall, recognized) z-scores +VST (total correct) z-score