Final answer:
Tversky's Contrast Model as described by the Smith article explains the degree of similarity between two items based on their common and differentiating features.
Step-by-step explanation:
According to the Smith article, Tversky's Contrast Model describes the similarity between two items as an increasing function of the features they have in common and a decreasing function of the features that they differ on. This model suggests that the more features two items share, the more similar they are perceived to be, while the more features they differ on, the less similar they are perceived to be.
According to the Smith article, Tversky's Contrast Model describes the similarity between two items as an increasing function of the features they have in common and a decreasing function of the features that they differ on. Tversky's model is helpful in analyzing similarities and differences that aren't immediately apparent, providing a method to quantify the degree of similarity based on shared and non-shared characteristics. It is particularly useful when there is a significant common thread or when similarities might be subtle and not obvious at a glance.