5 questions to test your understanding
A linguist surveys a community and finds that speakers over 60 use a particular vowel feature at 80%, speakers 40–60 at 60%, and speakers under 30 at 20%. Using the apparent-time hypothesis, what does this pattern most suggest?
In Labov's New York City study, lower-middle-class speakers showed higher rates of prestigious *r*-pronunciation than upper-middle-class speakers in formal speech, but lower rates in casual speech. This 'hypercorrection' pattern suggests:
The apparent-time hypothesis assumes that speakers largely retain the phonological patterns they acquired in adolescence, so age-based differences in a synchronic sample serve as evidence of historical language change.
A U-shaped distribution of a linguistic feature across age groups — high rates in both young and old speakers, low rates in middle-aged speakers — is strong evidence of a language change currently in progress.
Explain the apparent-time hypothesis and describe what pattern of age-based differences would count as evidence of genuine language change in progress versus age-graded variation.