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Working paper

The role of labels in learning statistically dense and statistically sparse categories

Kotov A. A., Agrba L. B., Vlasosova E. F., Kotova T. N.
Subjects were given classic category formation tasks with a feedback. We used two types of categories - so called statistically dense and statistically sparse categories. We conducted two experiments to assess the influence of sign's type (experiment 1) and the interference of the redundant actions performed with the sign (experiment 2) on the performance of learning different types of categories. We found that in the case of dense categories formation, the visual distinction of the sign from other object's features is more convenient. In the case of sparse categories formation, the opportunity for easy verbalization is more important. Additionally we defined that verbal interference, directed to the actions with the sign, improves sparse categories formation, but worsens dense categories formation. The results of our experiments are discussed in accordance with the model of multiple systems of categorization (COVIS).