Simply Social Kids - One Industrial Way, Tyngsboro, MA. Contact Nadine Briggs at nbriggs@simplysocialkids.com or 978-764-2758. Social Skills & Resiliency Coaching for ages 8-18 with ADHD, high functioning autism, anxiety, and general social awkwardness. Simply Social Kids is owned and operated by Nadine Briggs, co-author of the best-selling How to Make and Keep Friends book series. Social Skills Groups are available online and in person.