Condition 1 Positive	Condition 2 Negative	Condition 3 Conflicting	Condition 4 No-message control
‘Vaping’ is safer than smoking	Unsafe e-cigarettes	Randomly selected two positive headlines	-
Smokers who switch to e-cigarettes may breathe fewer toxins	Lab tests hint at excess of formaldehyde in vapor from e-cigarettes		-
E-cigarettes found to provide some benefit	E-cigarettes pose risks	Randomly selected two negative headlines	-
British study says electronic cigarettes curb smoking risks	Nicotine isn’t the only hazard to be found in e-cigarettes		-
Health and e-cigarettes (neutral)	Health and e-cigarettes (neutral)	Health and e-cigarettes (neutral)	-