A feature-matching model of preference was developed from Tversky's contrast model of similarity judgments. This model emphasizes the importance of the direction of comparison employed in the judgment, and proposes a focus on the unique features of the starting point of the comparison. For preferences, it is further assumed that shared features are cancelled and only features unique to each candidate option play a role in preference and in choice satisfaction. The model has been used to predict which objects are chosen, the degree of pre-decision conflict, and the amount of post-choice satisfaction and regret. This model also assumes a basic similarity in the processes underlying preference and similarity/dissimilarity judgments. Recent work demonstrates that initial judgments of similarity or dissimilarity between candidate objects alter subsequent preference judgments because of changes in the salience or weights of the features. A general, comprehensive model of judgments of similarity and preference is the ultimate goal of this research.