Table 3. Mean RTs and standard deviations (mean ± SD), detailed paired-samples t test results and the 95% confidence intervals of the mean difference in reaction time between the traditional condition and the nudging condition for four garbage stimulus types.

Garbage	Traditional condition (ms)	Nudging condition (ms)	t	p	Cohen’s d	95% confidence interval
						Lower	Upper
Food garbage	1,021 ± 115	1,004 ± 97	1.902	0.067	0.347	−1.313	36.289
Hazardous garbage	1,080 ± 107	1,046 ± 86	3.238*	0.003	0.591	12.492	55.323
Recyclables	1,033 ± 99	1,015 ± 84	2.084*	0.046	0.381	0.336	35.453
Residual garbage	1,084 ± 96	1,034 ± 85	5.416**	<0.001	0.989	31.167	68.988

Notes:

^**p < 0.01.

^*p < 0.05.