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An overview of expansion rates (slopes) for American English (dotted-dashed lines) and Canadian French (solid lines) for protrusion (left) and constriction (right) in the bite-block condition. (Only one English speaker had measurable data for protrusion). The slope of 1 is predicted by the LA model, while zero slope is for TL model. For simplicity’s sake, slopes are shown to change from one consonant interval (vertical broken lines) to many.
