Communication deficits (e.g., lack of vocal-verbal behavior) are a hallmark of autism spectrum disorder. As such, improving these deficits is often a primary focus of applied-behavior-analytic intervention. Such verbal-behavior skills include learning to imitate another speaker (i.e., echoic), requesting critical items (i.e., mand), labeling one’s environment (i.e., tact), and responding interactively with other speakers (i.e., intraverbal). This chapter provides an overview of verbal-behavior research on these skills and methods for progressing from basic operants (e.g., echoics) to complex language to improve educational and community integration for individuals with autism.