For questions relating to the effects of language learning in adulthood and language learning techniques and methods specifically designed for adults to use.
This tag should only be used when the question's primary focus contains or is children. The legal definition would be at least 18 years old (by definition) though the range is from 15 to 21.
If the question involves adults but does not include them as a significant part or factor within the question, the tag should not be used.