. Author manuscript; available in PMC: 2011 Jul 9.

Published in final edited form as: Vision Res. 2010 Apr 24;50(15):1452–1461. doi: 10.1016/j.visres.2010.04.013

Table 2.

For the parameters of the adaptation curve fits from the test and retest sessions, the test and retest sessions (n=11) were significantly correlated (Spearman rank correlations) for all variables except X “Blur” Peak; the within-subject and between-subject distributions of difference scores were different for all except Gain and approached significance for Y Intercept (Kolmogorov-Smirnoff test), indicating that all but Gain were individual characteristics of the fits; and the coefficients of repeatability ranged from 0.28 to 0.47 of the measured range. Measured range is the difference between the maximum and minimum parameter values found for all fits.

Parameters	Spearman Correlations	Individual Characteristic	Coefficients of Repeatability	Measured Ranges
Gain	ρ₁₀=0.86, p=0.001	z₂₇₈=0.52, p=0.95	0.30	0.80
Y _Intercept	ρ₁₀=0.52, p=0.10	z₂₇₈=1.32, p=0.06	0.09	0.27
X _{“Sharp” Peak}	ρ₁₀=0.73, p=0.01	z₂₇₈=1.37, p=0.046	0.24	0.55
Y _{“Sharp” Peak}	ρ₁₀=0.73, p=0.01	z₂₇₈=2.07, p<0.001	0.12	0.42
X _{“Blur” Peak}	ρ₁₀=0.45, p=0.17	z₂₇₈=1.79, p=0.003	0.21	0.47
Y _{“Blur” Peak}	ρ₁₀=0.70, p=0.02	z₂₇₈=1.45, p=0.03	0.17	0.50