Final answer:
Matthew's expectation that people from the Ivory Coast will be friendly and funny like Ayanna is an example of the availability heuristic.
Step-by-step explanation:
In the scenario described where Matthew expects people in the Ivory Coast to be friendly and funny based on his interaction with Ayanna, he is applying the availability heuristic. This cognitive bias leads individuals to make judgments about the likelihood of events based on how easily they can recall similar instances. In Matthew's case, because his interactions with Ayanna are positive and memorable, he mistakenly believes these traits are representative of all people from the Ivory Coast.