Behavior that is rewarded some but not all of the time is on a/an schedule of reinforcement.

Abenefit of using a debit or credit card instead of cash is that it provides a paper record of a purchase. looking at the purchases below, which one should be made using a credit or a debit card?

Simon, aged 10, is invited to a classmate's birthday party at an exclusive ski resort on march 15th. the day will include 4 hours of snowboarding, lunch and birthday cake. simon's mother checks a box on the invitation that says "yes, we will attend" and returns it to the classmate's address. unfortunately, they later don't attend the party when simon comes down with the flu. on march 17th, simon's mother receives an invoice in the mail from simon's classmate for $35 that says, "party no-show fee." can simon's classmate collect the fee?

In macroeconomics, to study the aggregate means to study blank