(A) Learning Effects in Verbal Backward Digit Span Task (Number test). With the adjustments of other variables, one more test was associated with 0.22 (95% CI: 0.051, 0.389) increase in the digit span
*; Age (weeks old) of the youngest animals of the group at the start of the test. The oldest animals are 3 weeks (1st group) or 4 weeks (2nd group) older than the age indicated. **; Sections in the te
