The Psychosystems Project (www.psychosystems.org
) has developed into a leading center of network theory and methodology as applied to psychological constructs. One important contribution to science and society that has been achieved in this project is the articulation of a novel theory of mental disorders, in which these result from interactions between symptoms rather than from a latent disorder. This theory is now guiding scientific research in various scientific groups around the world, and if accurate may have important ramifications for treatment. We have in addition worked on developing new methodologies to extract such symptom networks from various kinds of data and to analyze them mathematically. These methodologies have been implemented in freely available software modules, that are now being used by researchers from many scientific fields to chart network structures operative in psychopathology. In addition, several collaborations with leading research groups in psychiatry, clinical psychology, methodology, statistics, and dynamical systems theory have been set up. In these collaborations, researchers from these different fields work together to better understand specific mental disorders like Panic Disorder, Major Depression, and Schizophrenia, by representing them in terms of dynamical network models.