Javier is listening to the sports updates on the radio. His girlfriend is talking to him at the same time. Unfortunately, he did not retain a single word his girlfriend said. This is an example of phi phenomenon
convergence
cocktail party effect
birthday party effect
beta phenomenon

Thayer sometimes finds it difficult to understand what his instructor is saying. he raises his hand in class and asks his instructor to elaborate on what was just said, but it rarely . what should thayer do to overcome this obstacle? a. during class, ask other students what the instructor means b. raise more questions in class c. join a study group of his peers d. try to do the best he can with the information he has