Colinsmum...my ds was the same. He was a late-talker and progressed rapidly (though it was hard to understand what he said because his speech was terrible...TERRIBLE. ) He also seemed like he could "go either way" before about 3ish with ASD. He was fascinated with numbers, letters, symbols, moving parts, maps - and did very little pretend play. He also seemed immature compared to his friends. But at 6... those quirks have evened out with his sociability, silly imagination, and other more "typical" kid things. His brain just developed differently.
