TABLE 2.

Group comparisons for design length (pixels) and time (s)

	Groups	Mean difference	SE	Sig.
Length
Design 1	Control vs. PD on	3113.2	818.1	.003**
	Control vs. PD off	3525.4	817.5	.001***
	PD on vs. PD off	412.2	174.8	ns
Design 2	Control vs. PD on	3830.7	870.3	.0001**
	Control vs. PD off	3895.7	870.3	.0001***
	PD on vs. PD off	64.9	249.8	ns
Time
Design 1	Control vs. PD on	−127.04	38.128	.008**
	Control vs. PD off	−109.09	39.629	.032*
	PD on vs. PD off	17.95	12.48	ns
Design 2	Control vs. PD on	−126.65	47.79	.04*
	Control vs. PD off	−168.15	48.06	.005**
	PD on vs. PD off	−41.50	12.84	.006**

^*p < .05,

^**p <.01,

^***p < .001.