R tutorial: power issues & robustness of network models

A new paper by Mohammad Afzali and colleagues was published a few days ago in the Journal of Affective Disorders, entitled “A Network Approach to the Comorbidity between Posttraumatic Stress Disorder and Major Depressive Disorder: the Role of Overlapping Symptoms”. The authors estimate the network structure of 36 symptoms in …

R tutorial: how to identify communities of items in networks

A problem we see in psychological network papers is that authors sometimes over-interpret the visualization of their data. This pertains especially to the layout and node placement of the graph, for instance: do nodes in the networks cluster in certain communities. Below I will discuss this problem in some detail, …

Network Analysis Workshop: all materials freely available online

This year, we were invited to give a number of network analysis workshops for psychological data. Most of these I gave together with my fantastic colleagues Marie Deserno and Sacha Epskamp. The majority of the workshops covered network estimation, network inference, and network accuracy for between-subjects cross-sectional networks and time-series …