Liam has decided that he has been praising his unit too much. he thinks they just expect him to praise them so he stops. the unit performance declines. this is an example of

The scenario in which Liam has decided that he has been praising his unit too much, he thinks they just expect him to praise them so he stops and the unit performance declines  is an example of extinction.
The term extinction is used in operant conditioning to denote the process of no longer providing the reinforcement that has been maintaining a behavior.

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.