Ethnicity and the mechanisms of point-of-sale e-cigarette marketing's influence on behavior: A longitudinal study.

To test the mechanisms by which exposure to point-of-sale (POS) e-cigarette marketing mediate the relationship between an ethnic minority group highly vulnerable for tobacco product use, namely Native Hawaiian/Other Pacific Islander (NHPI), and increased future e-cigarette use through explicit (positive outcome expectancies) and implicit (spontaneous positive reactions) pathways. Four waves of data were collected in 6-month intervals from 2,327 multiethnic young adults ( = 21.2, = 2.