Table 3.

Paired t-test analysis of three colour noise exposure situations compared with quiet situations

	Variables	Paired differences		Sig.
		Mean	Std. Dev.
Simple reaction test	Quiet vs. red noise	0.10	0.15	0
	Quiet vs. pink noise	0.06	0.14	0
	Quiet vs. white noise	0.05	0.18	0
Continuous performance test	Quiet vs. red noise	−0.03	0.08	0.111
	Quiet vs. pink noise	−0.05	0.09	0.025
	Quiet vs. white noise	−0.02	0.10	0.277
Executive function test	Quiet vs. red noise	3.16	4.46	0
	Quiet vs. pink noise	2.47	4.97	0
	Quiet vs. white noise	1.42	5.42	0
Working memory test	Quiet vs. red noise	−4.45	2.56	0
	Quiet vs. pink noise	−2.95	2.19	0
	Quiet vs. white noise	−1.50	2.46	0.009