The French Black Copper Maran lays the darkest egg of all chicken breeds. Until a few years ago this breed was difficult to find and a breeding pair would go for hundreds of dollars. The dark eggs are prized by French chefs because of the deep orange yolks and rich flavor.
The events that students experience as reinforcing and punishing are always changing based on both the presence and absence of many different environmental and social situations. The term Setting Event is used to describe the events that momentarily change the value of reinforcers and punishers in a student's life.
set. vb (mainly tr) , sets, setting or set. 1. to put or place in position or into a specified state or condition: to set a book on the table; to set someone free. 2. (also intr; foll by to or on) to put or be put (to); apply or be applied: he set fire to the house; they set the dogs on the scent.