Many Hollywood movie stars were among the first to buy electric and hybrid vehicles. These stars often become , influencing other consumers' behavior.

Reference groups

Explanation:

Reference groups are those groups that influenced our attitude, belief thought, etc. The reference group always plays the role of our role model. The managers in an organization used the reference group to influence the customer that how a customer gets attracted and at the base make a decision.  

There are two types of reference groups such as:

For example celebrities and heroes.  

the vibration from the sound waves messed with the glass and it shattered.

hope this .

answer; chemical substances that affect our psychological state;