Furthermore, overlapping challenges across FXS and AU in pragmatic skills, such as underpinning cognitive mechanisms (e.g., social cognition, visual attention), prosodic speech features (e.g., atypical pitch, speech rate, rhythm), and greater rates of atypical speech disfluencies [48,49,50,51], provide further evidence of the role of FMR1 in these pragmatic features [50,52,53]. This evidence concerns the gene FMR1 and fragile X syndrome.