Table 1

Summary of statistical data for the four postural tasks.

Tasks

Sit

Biped

Cling

Triped


Total

54 (23,31)

31 (13,18)

31 (13,18)

29 (12,17)


R

24 (11,13)

15 (8,7)

9 (4,5)

8 (2,6)


L

18 (7,11)

13 (4,9)

16 (5,11)

16 (8,8)


A

12 (5,7)

3 (1,2)

6 (4,2)

5 (2,3)


P of Chi-Square test

(50%A:25%L:25%R)

< 0.000

< 0.000

≤0.001

< 0.000


P of Binomial test

(50%R:50%L)

0.441

0.851

0.230

0.152


HI

0.07 ± 0.78

-0.02 ± 0.86

-0.16 ± 0.83

0.21 ± 0.74


ABS-HI

0.72 ± 0.30

0.81 ± 0.23

0.78 ± 0.29

0.71 ± 0.26


P of t-test on HI

0.491

0.920

0.297

0.130


Number of right-handed (R), left-handed (L) and ambiguous (A) subjects; in brackets: Number of males, number of females; p-value of the Chi Square and Binomial test; mean handedness indices (HI) and absolute handedness indices (ABS-HI) and the p-value for the one-sample t-test.

Scheumann et al. BMC Evolutionary Biology 2011 11:52   doi:10.1186/1471-2148-11-52

Open Data