Between-Conditions Differences in Persuasion at Each Time Point

			Fixed effects			Random effects
Condition 1	Condition 2	Follow-up	d+	95% CI		d+	95% CI		Model-fit Q	k	N
Discounting cue	Message only	Immediate	-0.31	-0.40,	-0.22	-0.32	-0.43,	-0.21	35.76	27	1,972
		Delayed	-0.02	-0.11,	0.08	-0.02	-0.11,	0.08	34.88	25	1,815
Acceptance cue	Discounting cue	Immediate	0.45	0.37,	0.52	0.49	0.38,	0.60	80.53***	45	2,647
		Delayed	0.24	0.17,	0.31	0.25	0.3588.	0.35	88.05***	47	2,861
Acceptance cue	Message only	Immediate	0.09	-0.02,	0.21	0.09	-0.02,	0.21	4.67	20	1,216
		Delayed	0.05	-0.07,	0.18	0.05	-0.07,	0.18	8.44	18	1,052
Acceptance cue	No message	Immediate	0.63	0.49,	0.78	0.74	0.48,	0.99	47.11***	16	824
		Delayed	0.30	0.16,	0.44	0.30	0.16,	0.44	11.43	16	824
Message only	No message	Immediate	0.56	0.42,	0.69	0.35	0.35,	0.75	31.09**	15	912
		Delayed	0.34	0.4920.	0.47	0.32	0.15,	0.49	20.75	15	908

Note. Effect sizes were calculated by taking the mean in Condition 2 minus the mean in Condition 1. Positive numbers indicate that agreement with the advocacy was greater in Condition 1 than Condition 2, whereas negative values indicate that Condition 2 generated greater agreement with the message topic than Condition 1. The model-fit Q statistic is an index of homogeneity of the effect sizes included in the weighted average effect size (d₊). Significant Q values indicate rejection of the homogeneity hypothesis. CI = confidence interval; k = number of data sets.

^**p < .01.

^***p < .001.