“…Second, the responses to a multi-part question asking participants to rank a series of risks on a 5-point Likert scale (ranging from 1 ¼ 'not dangerous at all' to 5 ¼ 'very dangerous') were examined with respect to demographic relationships. This approach was consistent with previous risk perception research (Slovic et al 1993(Slovic et al , 1995Krewski et al 1995aKrewski et al , 1995b. People were asked 'In your opinion, how dangerous are the following things to your health?…”