Perceptual dialectology is the scientific study of how ordinary individuals perceive variation in language—where they believe it exists, where they believe it comes from, how they believe it functions, and how they socially evaluate it.
Perceptual dialectology differs from ordinary dialectology in that it is concerned not with empirical linguistic understandings or discoveries about language itself, but rather with empirical research on how non-linguists perceive language, also known as folk linguistics, which includes how non-linguists perceive various accents, vocabulary usages, grammatical structures, etc. Such perceptions may or may not align with actual linguistic findings. Perceptual dialectology falls under the general field of sociolinguistics.
