Table 4

Demographic data and cognitive assessment in subgroups of participants matched for fluid intelligence and processing speed
Gender ratio [Male/female] Age Educational level [Years completed] Mill hill [Crystallized intelligence] Raven’s advanced progressive matrices [Fluid intelligence] Code test (WAIS-III) [Processing speed] Mattis dementia rating scale
Fluid intelligence matching Young adults (n = 25) 14/11 21.64 ± 3.29 12.72 ± 2.07 19.56 ± 5.07 50.6 ± 1.78 79.52 ± 9.46
Older adults (n = 25) 13/12 73.8 ± 7.05 15.04 ± 3.67 29.56 ± 2.52 50.32 ± 1.6 63.56 ± 9.93 141.92 ± 2.29
Student t tests between young and older adults t(48) = −2.753* t(48) = −8.998** t(48) = 0.606 t(48) = 5.775**
Processing speed matching Young adults (n = 25) 14/11 21.96 ± 2.41 13.08 ± 2.39 20.52 ± 4.96 50.12 ± 5.44 74.64 ± 7.47
Older adults (n = 29) 12/17 70.72 ± 7.64 14.10 ± 2.69 28.86 ± 3.04 45.97 ± 7.81 71.07 ± 8.15 141.79 ± 2.31
Student t tests between young and older adults t(52) = −1.465 t(52) = −7.777** t(52) = 2.208* t(52) = 1.651

Mean raw scores ± standard deviations *p <.05; ** p <.001.

Student t tests reported in boldface shows no significant difference in fluid intelligence (p=.581)or in processing speed (p=.662) between subgroups of young and older adults that were respectively paired for these cognitive resources.

Manard et al.

Manard et al. BMC Neuroscience 2014 15:7   doi:10.1186/1471-2202-15-7

Open Data