. 2020 Aug 26;5:41. doi: 10.1186/s41235-020-00241-6

Table 2.

Contrasts run in Experiment 2

dV/hypothesis	Effect tested	F(1,932)	P
False-claim inference scores
H1_FISi: NE > FCOi	Effect of correction vs. baseline	70.33	< .001^a
H2_FISi: NE < COi	Illusory truth effect	1.63	.202
H3_FISi: CFCi < COi	Effect of claim+correction vs. claim-only	114.14	< .001^a
H4_FISi: NE > CFCi	Effect of claim+correction vs. baseline	88.08	< .001^a
H1_FISd: NE < FCOd	Familiarity backfire effect	0.02	.895
H2_FISd: NE < COd	Illusory truth effect	9.89	.002^a
H3_FISd: CFCd < COd	Effect of claim+correction vs. claim-only	11.64	< .001^a
H4_FISd: NE > CFCd	Effect of claim+correction vs. baseline	0.04	.850
H5_FIS: FCOi < FCOd	Delay effect on correction	72.21	< .001^a
H6_FIS: CFCi < CFCd	Delay effect on claim+correction	88.43	< .001^a
False-claim belief ratings
H1_FBRi: NE > FCOi	Effect of correction vs. baseline	83.13	< .001^a
H2_FBRi: NE < COi	Illusory truth effect	3.75	.053^b
H3_FBRi: CFCi < COi	Effect of claim+correction vs. claim-only	87.36	< .001^a
H4_FBRi: NE > CFCi	Effect of claim+correction vs. baseline	126.87	< .001^a
H1_FBRd: NE < FCOd	Familiarity backfire effect	2.02	.155
H2_FBRd: NE < COd	Illusory truth effect	14.09	< .001^a
H3_FBRd: CFCd < COd	Effect of claim+correction vs. claim-only	37.91	< .001^a
H4_FBRd: NE > CFCd	Effect of claim+correction vs. baseline	5.12	.024
H5_FBR: FCOi < FCOd	Delay effect on correction	63.33	< .001^a
H6_FBR: CFCi < CFCd	Delay effect on claim+correction	85.50	< .001^a
True-claim inference scores
H1_TISi: NE < FCOi	Effect of affirmation vs. baseline	148.92	< .001^a
H2_TISi: NE < COi	Illusory truth effect	2.21	.137
H3_TISi: CFCi > COi	Effect of claim+affirmation vs. claim-only	121.24	< .001^a
H1_TISd: NE < FCOd	Effect of affirmation vs. baseline	18.24	< .001^a
H2_TISd: NE < COd	Illusory truth effect	0.19	.666
H3_TISd: CFCd > COd	Effect of claim+affirmation vs. claim-only	15.07	< .001^a
H5_TIS: FCOi > FCOd	Delay effect on affirmation	23.51	< .001^a
H6_TIS: CFCi > CFCd	Delay effect on claim+affirmation	72.57	< .001^a
True-claim belief ratings
H1_TBRi: NE < FCOi	Effect of affirmation vs. baseline	45.71	< .001^a
H2_TBRi: NE < COi	Illusory truth effect	3.79	.052^b
H3_TBRi: CFCi > COi	Effect of claim+affirmation vs. claim-only	108.75	< .001^a
H1_TBRd: NE < FCOd	Effect of affirmation vs. baseline	57.16	< .001^a
H2_TBRd: NE < COd	Illusory truth effect	6.49	.011^a
H3_TBRd: CFC_D > COd	Effect of claim+affirmation vs. claim-only	25.31	< .001^a
H5_TBR: FCOi > FCOd	Delay effect on affirmation	0.38	.536
H6_TBR: CFCi > CFCd	Delay effect on claim+affirmation	1.37	.243

Note. Hypotheses are numbered H1–6 (primary hypothesis in bold; see text for details); subscripts FISi/d, TISi/d, FBRi/d, and TISi/d refer to false-claim and true-claim inference scores and belief ratings in immediate and delayed tests, respectively. Conditions are NE no-exposure; COi/d claim-only with immediate/delayed test; FCOi/d fact-check-only with immediate/delayed test; CFCi/d claim-plus-fact-check with immediate/delayed test. ^aindicates statistical significance after Holm-Bonferroni correction. ^bindicates an effect in the opposite of hypothesized direction