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. 1. to put (something or someone) in a particular place, position, or posture: to set a vase on a table; Set the baby on her feet. 2. to put or cause to pass into some condition: to set a house on fire; to set a prisoner free. 3. to put or apply: to set fire to a house. 4. to fix definitely; establish or decide upon: to set a time limit; to set a wedding date. 5. to put (a price or value) upon something. 6. to fix the value of at a certain amount, rate, or point: She sets honesty above everything else.