Sternberg ran his original study (the one that is replicated in Table 2.1) to investigate whether people process information simultaneously or sequentially. He reasoned that if they process information simultaneously, they would compare the test stimulus against all digits in the comparison stimulus at the same time, and the time to decide whether a digit was part of the comparison set would not depend on how many digits were in the comparison. If people process information sequentially, the time to come to a decision would increase with the number of digits in the comparison. Which hypothesis do you think the figures you drew in Exercise 2.20 support?