. Author manuscript; available in PMC: 2012 May 1.

Published in final edited form as: Int J Psychophysiol. 2011 Feb 21;80(2):87–95. doi: 10.1016/j.ijpsycho.2011.02.002

Table 3.

Intercorrelations of electrodermal measures.

Electrodermal measures	SCL	SCLstd	NSF (number)	NSF (amplitude)	SCLstd/SCL (coefficient of SC variation)
*SCL*	*Between-S*	W1: 0.9^**	W1: 0.9^**	W1: 0.7^**	W1: 0.3^*
		S: 0.8^**	S: 0.8^**	S: 0.1	S: −0.7^**
	*Within-S*	W2: 0.9^**	W2: 0.8^**	W2: 0.6^**	W2: 0.2

*SCLstd*	W1: 11.1^***	*Between-S*	W1: 0.9^**	W1: 0.9^**	W1: 0.7^**
	S: 3.7^***		S: 0.9^**	S: 0.2	S: −0.2
	W2: 12.0^***	*Within-S*	W2: 0.9^**	W2: 0.8^**	W2: 0.6^**

*NSF (number)*	W1: 8.1^***	W1: 8.7^***	*Between-S*	W1: 0.7^**	W1: 0.6^**
	S: 4.0^***	S: 4.7^***		S: 0.2	S: −0.3^*
	W2: 8.0^***	W2: 8.9^***	*Within-S*	W2: 0.6^**	W2: 0.5^**

*NSF (amplitude)*	W1: 3.3^***	W1: 12.6^***	W1: 1.9^***	*Between-S*	W1: 0.8^**
	S: 2.3^***	S: 4.2^***	S: 1.3^***		S: −0.0
	W2: 2.6^***	W2: 8.0^***	W2: 1.7^***	*Within-S*	W2: 0.7^**

*SCLstd/SCL (coefficient of SC variation)*	W1: 4.9^***	W1: 9.3^***	W1: 9.3^***	W1: 12.8^***	*Between-S*
	S: 0.8^**	S: 6.0^***	S: 3.2^***	S: 4.0^***
	W2: 5.1^***	W2: 9.2^***	W2: 7.5^***	W2: 6.7^***	*Within-S*

Note. Between-subjects correlations represent Spearman’s rho correlation coefficients, within-subject values represent Cohen’s d effect sizes (based on t statistics and degrees of freedom from testing Fisher’s z-transformed correlation coefficients);

p-value<0.05,

^**

p-value<0.01,

^***

p-value <0.005;

Abbreviations. SCL, skin conductance level; SCLstd, SCL standard deviation; NSF, non-specific fluctuations; Within-S, within-subject correlations; Between-S, between-subjects correlations; W1, Waking on day 1; W2, Waking on day 2; S, Sleeping.