Consumers subconsciously screen out stimuli that they find psychologically threatening, even though exposure has already taken place. this is consistent with the perception factor of selective attention selective exposure perceptual defense perceptual differentiation perceptual organization

Perceptual defense  

Explanation:

The perceptual defense is a process by which a catalyst alarming offensive and disagreeable are either not perceived or per-verted in perception especially when presented as brief flame. It is a non-recognition threatening stimuli. A stimulus may register outside of the awareness and bring about a change in response  

There are two conditions must be there  

1) The stimulus must be relevant  

2) It must be maintained over time.

there are indirect ways of affecting state laws   by with holding funding's. and that's why we have a 55mph speed on the high way with a design of 70mph speed.

answer; community based corrections;