Table 5.
Range | Study 1
|
Study 2—smokers
|
|||
---|---|---|---|---|---|
n | β | n | β | ||
Convergent validity (correlates at immediate post-test) | |||||
Trait reactance | 1–5 | 2020 | 0.37** | 596 | 0.46** |
Positive smoker prototypes | 1–5 | 2096 | 0.23** | 596 | 0.12* |
Exposure to pictorial warning | – | 2106 | 0.15** | 596 | 0.09* |
Other validity | Predictive validity | Concurrent criterion validity | |||
Perceived message effectiveness | 1–4 | 1856 | −0.19** | 596 | −0.43** |
Support for pictorial warning policy | 1–4 | 1860 | −0.31** | – | – |
Quit intentions | 1–4 | 1863 | −0.17** | – | – |
Avoidance of warning | 1–5 | 1824 | 0.09** | 596 | 0.32** |
Forgoing a cigarette | – | 1889 | OR = 0.75*a | – | – |
Cigarettes per day | 1–60 | 1863 | 0.06* | – | – |
For predictive validity analyses, we assessed predictors at immediate post-test and the outcome at week 4
βs are standardized regression coefficients. – not assessed. Study 1 analyses controlled for study condition. Study 2 analyses controlled for study condition and education
p < .05,
p < .001
95% confidence interval [.73, .92]