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.
Certain Event: An event that must occur; it has a probability of 1. Combination: A group of elements from a set in which the order of the elements is not important. Complementary Events: Two events from the same sample space whose probabilities add up to 1. Complementary Probabilities: The probability of an outcome occurring and the probability that the same outcome will not occur.