This volume presents a selection of contributions from the Fifth Workshop on Informatics and Psychology at Schärding, Austria, May 1986, which focused on "Visual Aids in Programming". The lectures give a broad view of the state of the art in this new field of research and development spanning Cognitive Science, Informatics and Ergonomics, which draws its impact from the growing need for a deeper understanding of complex program structures and for better program design. The topics include the visualization of program structures, the discussion of psychological aspects, design problems of visual interfaces, and present implementations.