Constellations Behavioral Services, LLC | 503 followers on LinkedIn. Now partnering with Community Auitms Services, a division of The Stepping Stones Group, our experts work closely with schools and parents to develop and implement Applied Behavior Analysis programs that help children with autism and other developmental delays lead happier, healthier, and more productive lives. Whether it’s consulting with school districts to improve services or working with children directly at our clinic in Portsmouth, NH, our programs are specifically designed to address each, individual child’s skill deficits across a wide range of developmental domains including language development, social skills, self-help, play and academic achievement.