Caitlin Studied the Relationship Between Gender and Adjustment to Retirement

Caitlin studied the relationship between gender and adjustment to retirement. She controlled for type of job before retirement and set up tables relating gender to retirement adjustment for each of her three categories of job type before retirement. The relationships displayed in these tables are known as:

A) test relationships.
B) zero-order relationships.
C) primary relationships.
D) partial relationships.
E) extensive relationships.