I want to know the answer to the following question:
In their study what was the relationship that both groups shared?
All the background I'm provided with is that "A separate study by cognitive psychologists Schwabe and Wolf shows that when retention testing is done in a context similar to or congruent with the original learning task (i.e., in the same room), memory impairment and the detrimental effects of stress on learning can be attenuated.". Is that enough to answer the question?