In general, age does affect. Children find spoonbending much easier to learn than adults. The famous telekinetic celebrities like Guy Bavli, Uri Geller (ooh they are both from Israel, interesting) learned it when they were very young like 5 or so. But like people said in this thread, it doesn't mean age is what
determines one's ability to learn telekinesis.
Learning telekinesis is kind of like learning language. Everyone in this society is forced to believe telekinesis is not real. Not only brainwashing our children to limit their subconscious minds, they never teach it to babies or children unlike language. Imagine they didn't teach language to babies or children and a 20 year old guy trying to learn his very first language - it would be totally different from learning a 2nd language. Sure he will learn it but will he be as good as he could've been if he were taught as a child? Well, the answer is really
it depends. It depends on how your brain adapts and learns the new processes. Fortunately, learning your subconscious mind and your spirit is probably possible to
master no matter what your age is unlike learning a language - although it is definitely more subtle and abstract than learning a language.