They are assessing cognitive performance with a single test, and these lemur have a special ‘low energy’ mode, so there’s many options. For instance it might be

They are assessing cognitive performance with a single test, and these lemur have a special ‘low energy’ mode, so there’s many options. For instance it might be that their single test succeeds while other brain capacities are impacted (for instance social, emotionally capacities or memory).