A working hypothesis is that memory might be in particular
susceptible to the extent of hydration. It was memory (Fig. 1)
rather than the ability to sustain attention that was influenced by
water consumption in the present study. Bar-David et al. (2005)
found that memory but not four other measures of cognition was
disrupted by dehydration. Similarly Fadda et al. (2008) reported a
significant relationship between urinary osmolarity and a measure
of working memory