Personal influence, reference groups, family influence, and culture are types of influence on the consumer purchase decision process.

Social influence.

Explanation:Social influence are influences of reference group,family and culture which influences a customer's decision in buying.

In many cases,a reference group endorses a product before a consumer buys the product.

Family influence also has a large impact on the customer's decision.If the product has been bought by the consumer's family,the family gives her good or bad feed back on the product,this will go a long way in the purchase decision.

The culture of the consumer is also a social determining factor.if a product is unacceptable In the consumer's culture,such product will not be purchased by the consumer.

All theses are social influences that determines a consumer's buying decision.

cause you are attracted to the features of girls or if you are a boy you are attracted to the features of a boy.