<span>The perception of risk or danger associated with drug use indicated how likely a subject is to use the drug in the future. If he believes it is very dangerous, he is less likely to try it. Therefor the perceived level of risk indicated the future trend of drug use.</span>
<span>contiguity
</span>
The sequential occurrence or proximity of stimulus and response, causing their association in the mind. In the <span>theory of contiguity, psychological theory of
learning emphasizes that the only condition necessary for the
association of stimuli and responses is that there be a close temporal
relationship between them.</span>
it showed off Atlanta's (and by association Georgia's)industrial side.
You can add where it came from
