Table 3.

Within-subjects effect of reading and ranking messages on attitudes about air pollution and energy use

	F	df	Error df	p-value	Effect size d	T1 Mean	T1 Std. Deviation	T2 Mean	T2 Std. Deviation
Perceived risk of air pollution	101.38	1	1551	< 0.001	0.27	3.82	1.53	4.22	1.49
Perceived harm of fossil fuels	96.75	1	1545	< 0.001	0.25	2.97	0.98	3.22	1.00
Desire for more fossil fuel use	25.48	1	1637	< 0.001	0.10	3.55	1.39	3.40	1.46
Desire for new fossil fuel plant near home	26.57	1	1637	< 0.001	0.09	3.45	1.55	3.31	1.56
Desire for more renewable energy use	12.71	1	1637	< 0.001	0.08	4.77	1.39	4.88	1.36
Desire for societal support for clean energy	14.52	1	1637	< 0.001	0.07	5.13	1.61	5.25	1.59
Intention to engage in consumer advocacy	5.27	1	1637	0.022	0.04	2.74	1.16	2.80	1.18
Intention to engage in political advocacy	0.06	1	1637	0.806	0.01	2.80	1.16	2.81	1.19