Within the context of a Multitrait-Multimethod Matrix, consider the following two correlations:

Correlation A. Correlation between self-report measure of impulsivity and interviewer rating measure of impulsivity.

Correlation B. Correlation between interviewer rating measure of social skill and acquaintance report measure of impulsivity.

a. Would you prefer that Correlation A is higher than Correlation B, or that Correlation B is higher than Correlation A, or that the two correlations are about the same? The only permissible answers here are "I would prefer Correlation A be higher than Correlation B", "I would prefer Correlation B be higher than Correlation A", or "I would prefer that both correlations are about the same".

b. What sources of variance does each correlation (i.e. Correlation A and Correlation B) relate to?