Becky has volunteered to participate in a psychology experiment. When she arrives, a lab assistant standing on the other side of
a counter greets her. He explains the informed consent procedure and asks her to sign a form. As the lab assistant reaches for the form he drops it behind the counter. He drops down behind the counter to pick it up, but another person stands up holding the form. After Becky signs it, she is asked if she noticed any difference. She replies that she did not. This phenomenon is known as: a. dual processing.
b. the cocktail party effect.
c. change blindness.
d. blindsight.
This is a phenomena that occurs when a person can not see the differences among two images quite similar.
The reason is because our attention is limited, we can focus in certain things that are important to us, not necessary the important for en specific scene like in this case.
