In contrast, both spatial moments and numerical modeling yielded the same mean transport velocity for 99mTc transport through NRVB, 1.64 × 10 5 m s 1, which was slower than the calculated pore velocity based on the internal and boundary conditions of the experiment (2.05 × 10 5 m s 1).
These findings strengthen the link observed between spatial and numerical abilities.
A positive correlation between spatial and numerical tasks was found by Thompson and Siegler [ 51] and Booth and Siegler [ 52].
It follows, then, that spatial and numerical cognitive abilities may indeed be closely linked in the nature of their representation.
Paired t-tests showed a significant difference between temporal and numerical tasks (t 34) = 11.81, p < 0.001) and between spatial and numerical tasks (t 34) = 6.43, p < 0.001).
Paired t-tests showed a significant difference between temporal and spatial tasks (t 34) = 3.06, p = 0.004), and between spatial and numerical tasks (t 34) = 3.71, p = 0.001).
Longitudinal and/or cross-sectional studies investigating temporal, spatial and numerical abilities at different ages are needed in order to test such a hypothesis.
If this is the case, we would expect to see correlations between individual differences in spatial and numerical tasks which recruit such mechanisms.
Paired t-tests showed a significant difference between temporal and spatial tasks (t 34) = 8.72, p < 0.001), between temporal and numerical tasks (t 34) = 7.39, p < 0.001), and between spatial and numerical tasks (t 34) = 2.79, p < 0.001).
Paired t-tests showed a significant difference between temporal and spatial tasks (t 34) = 2.85, p = 0.007), between spatial and numerical tasks (t 34) = 3.42, p = 0.002) and between temporal and numerical tasks (t 34) = 2.42, p = 0.021).
