Throughout life, humans are able to form, learn and adjust concepts in response to experience and task demands. The group has started to investigate how the human brain learns novel categories and their linguistic labels via structured input. Humans have the amazing ability to infer approximate extensions of concepts from only a few positive examples. These abilities of inductive generalization and categorization enable them to predict unobserved physical features or behaviour from a few observed data points. Currently, we are investigating, whether prior unsupervised training that allows subjects to estimate the underlying stimulus distributions can modulate the difficulty of consecutive supervised category learning.