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. Author manuscript; available in PMC: 2013 Jan 8.
Published in final edited form as: Atten Percept Psychophys. 2009 Jul;71(5):1042–1058. doi: 10.3758/APP.71.5.1042

Table 1.

Order Effects on Threshold and Performance

Task Order Difference Thresholda
Overall Perceptual Sensitivity (A′)
First Task Second Task First Task Second Task
Stable First 1.09 0.88 .943 .917
Transient First 1.06 0.79 .936 .890
a

Visual angle difference between the long line and the 80%-threshold-level short line obtained through a 3 down/1-up staircase procedure.