Figure 1: Illustrating items of the TIS-modNV. Illustration of optimal performance of A. lower trunk control items 1 and 2, and B. upper trunk control items 3 and 4 of the TIS-modNV scale. The illustrations highlight the selectivity of stability and movement during performance, however, during testing the patient and tester should sit facing eachother. © Karen Gjelsvik, 2013, reprinted with permission.