I am aware that I must be at least 18 years of age to participate. I understand that choosing agree below and continuing on to the survey signifies my consent and voluntary participation in this ...

(p. 571) Despite the generally high levels of comprehension produced by our consent form and review/retest interventions, one-third of our survey sample failed to achieve a score of 100% on the ...

The surveys use a complex, stratified, multistage probability sample design with unequal ... Storage and Continuing Studies” consent form during the three 2-year cycles of the survey.