Labov's studies of dialects in Martha's Vineyard and New York City in the 1960s are more popular than other regional dialect studies for several reasons. Labov did not separate language from its social context, making his data more authentic and valid. He used quantitative methods like charts and graphs to show linguistic variation according to social factors like class. This challenged views that lower class speakers were linguistically deficient. Labov's conversational analysis approach studied natural language use and found it varied between social contexts, influencing the rise of sociolinguistics. His field research methodology made language study more authentic.