1) How do children learn to control their articulators?
Mechanisms at work in typical and disordered speech development: 
  - What are the relations between emerging capacities? 
  - What are the individual differences in profiles?
Multi-level & multi-dimensional approach: 
 - Developmental interaction between cognitive-sensory processing functions and representations
2) How can we best help children that struggle with acquiring intelligible speech? 
Implementation of a process-oriented method for diagnostics and treatment planning of developmental speech disorders in a user-friendly clinical instrument.