Dialect Test
The Dialect Test was created by A.J. Ellis in February 1879, and was used in the fieldwork for his work "On Early English Pronunciation". It stands as one of the earliest methods of identifying vowel sounds and features of speech. The aim was to capture the main vowel sounds of an individual dialect by listening to the reading of a short passage. All the categories of West Saxon words and vowels were included in the test so that comparisons could be made with the historic West Saxon speech as well as with various other dialects.
Perceptual dialectology
Perceptual dialectology studies in Japan were also taking place during the early 20th century. Japanese methodology was fundamentally different from the Netherlands' in that informants were asked to judge differences between dialects on degrees of difference (for example, from 'not different' to 'incomprehensible'). Data was thus analyzed by drawing lines between areas to indicate a scale of difference, and was the first method in 'calculating' perceptual boundaries.