Figure 4.

Individual laterality indices in different groups. The individual laterality indices (circles) under the phonemic and prosodic conditions are linked with a line.The arrangement of groups and labeling convention are as in Figure 3. (A: adults, B: school-age children, C: preschoolers). Open and filled circles represent significant and non-significant differences, respectively, between the linked LIs. Note that the open circles of controls (Ctrl) show significant left-side dominance for the phonemic condition, whereas those of people who stutter (PWS) show right-side dominance for the same condition. Control (Ctrl) data were adopted from Furuya and Mori (2003), Furuya et al. (2001), and Sato et al., (2003).