Adjectival scales and three types of implicature
In this work, we explore the relationship between three different inferencestriggered by gradable adjectives. In particular, we look at scalar implicature andtwo competing inferences occuring under negation - scale reversal (indirect scalarimplicature) and a type of manner implicature called negative strengthening. In aseries of experiments, we test a variety of adjectival scales and explore correlationsbetween different inferences. Our results show that some scales are more likelyto generate scalar implicature while others lean more towards generating negativestrengthening. The extent to which scalar implicature and scale reversal correlate forthe same scales, in turn, is lower than expected. We discuss our findings with respectto the mechanisms underlying the three types of inferences and factors accountingfor differences across scales, with a focus on semantic distance, boundedness, thetype of standard of comparison and adjectival extremeness.