Abstract: A sample of 359 Tunpu high school students (145 males, 214 females) was investigated for seven behavioral traits of lateral functional dominance (i.e., hand clasping, handedness, arm folding, leg folding, foot preference, stride type and eye preference). The results of this research were as follows. The percentage of the right type on six traits was much higher than of the left type, except for arm folding. There was no sexual difference in the Tunpu for the seven traits preference. Compared with other ethnic groups, the percentage of R-R type of foot preference and arm folding were at the middle level, whereas the percentage of R-R type of leg folding and hand clasping was at the highest level. Among the seven traits, there were correlations between hand clasping and handedness, hand clasping and arm folding, hand clasping and leg folding. Leg folding, stride type, handedness and foot preference were related to each other.

Key words: Lateral function; Hand clasping; Handedness; Arm folding; Leg folding; Foot preference; Stride type; Eye preference; Tunpu