The process of changing or reinforcing a listener's attitudes, beliefs, values, or behavior is

Persuasion is the process of changing or reinforcing a listener's attitudes, beliefs, values or behaviors. 

Persuading someone is talking someone into something, or helping them understand, a thought that wasn't theirs initially. Sometimes facts, prior experiences or examples can persuade someone to think or act differently that is outside of their normal activities. 

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.