In the study by Katz, Lautenschlager, Blackburn, and Harris (1990) used in this chapter and in Exercises 7.13 and 7.29, we saw that students who were answering reading comprehension questions on the SAT without first reading the passages performed at better-thanchance levels. This does not necessarily mean that the SAT is not a useful test. Katz et al.

went on to calculate the correlation between the actual SAT Verbal scores on their participants’ admissions applications and performance on the 100-item test. For those participants who had read the passage, the correlation was .68 (N 5 17). For those who had not read the passage, the correlation was .53 (N 5 28), as we have seen.

a. Were these correlations significantly different?

b. What would you conclude from these data?