Two experiments are reported in which four dependent variables; typicality ratings, response times, category-naming frequencies, and exemplar-generation frequencies of natural language concepts, were predicted by two sorts of prototype predictors and by an exemplar predictor related to Heit and Barsalou's (1996) instantiation principle. In the first experiment, the exemplar predictor was compared to a prototype predictor calculated as in Hampton (1979). The four dependent variables were either predicted better by the exemplar measure than by the prototype predictor or the predictive value was about equal. In the second experiment, a new prototype predictor was calculated based on Rosch and Mervis ' (1975) classic family resemblance measure. The results showed that the exemplar predictor accounted better for the dependent variables than Hampton's and Rosch and Mervis' prototype measures. The differences between the prototype measures were not significant.
A data set is described that includes eight variables gathered for 13 common superordinate natural language categories and a representative set of 338 exemplars in Dutch. The category set contains 6 animal categories (reptiles, amphibians, mammals, birds, fish, and insects), 3 artifact categories (musical instruments, tools, and vehicles), 2 borderline artifact-natural-kind categories (vegetables and fruit), and 2 activity categories (sports and professions). In an exemplar and a feature generation task for the category nouns, frequency data were collected. For each of the 13 categories, a representative sample of 5-30 exemplars was selected. For all exemplars, feature generation frequencies, typicality ratings, pairwise similarity ratings, age-of-acquisition ratings, word frequencies, and word associations were gathered. Reliability estimates and some additional measures are presented. The full set of these norms is available in Excel format at the Psychonomic Society Web archive, www.psychonomic.org/archive/.
This research project was supported by Grant 2.0073.94 from the Belgian National Science Foundation (Fundamental Human Sciences). We thank James Hampton for his valuable comments on an earlier version of this article, Dirk Geeraerts for his stimulating suggestions in our discussion meetings, and Major Jacques Mylle for giving permission to use the students of the Royal Military Academy as participants.
Two experiments are reported in which four dependent variables; typicality ratings, response times, category-naming frequencies, and exemplar-generation frequencies of natural language concepts, were predicted by two sorts of prototype predictors and by an exemplar predictor related to Heit and Barsalou's (1996) instantiation principle. In the first experiment, the exemplar predictor was compared to a prototype predictor calculated as in Hampton (1979). The four dependent variables were either predicted better by the exemplar measure than by the prototype predictor or the predictive value was about equal. In the second experiment, a new prototype predictor was calculated based on Rosch and Mervis' (1975) classic family resemblance measure. The results showed that the exemplar predictor accounted better for the dependent variables than Hampton's and Rosch and Mervis' prototype measures. The differences between the prototype measures were not significant.
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