This guest post was written by Denny Borsboom (dennyborsboom@gmail.com), University of Amsterdam, in response to a recent discussion on the equivalence of latent variable and network models. Recently, an important set of equivalent representations of the Ising model was published by Joost Kruis and Gunter Maris in Scientific Reports. The …
This guest post was written by Joost Kruis (j.kruis@uva.nl) and summarizes the paper entitled “Three representations of the Ising model” published recently in Scientific Reports. Joost works in the Psychological Methods Department at the University of Amsterdam. The first sentence of the ‘About’ section on this website (and for that …
Most of you know Mplus, a statistical software that is considered by many to be state-of-the-art for Structural Equation Models (SEM). The network literature on psychopathology so far has been dominated by R, for instance when estimating cross-sectional network models via the packages qgraph, IsingFit, mgm, or bootnet, or time-series …
The last weeks have been pretty busy with teaching, traveling, and writing that I didn’t find the time I wanted to for blogging. To catch up, this blog post will feature several new network papers (in alphabetical order by first author). It is becoming increasingly hard to keep up with …
In psychopathological networks, we often model ordinal items (problems or symptoms) that are not normally distributed, especially in general population samples. But if a variable shows a floor effect, meaning that the mean is close to 0, it often has a small variance, which in turn means that the variable …
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 …
The Association for Behavioral and Cognitive Therapies (ABCT) has traditionally been a conference of clinical research with a limited amount of methodological talks. This year, there were a number of symposia on network research, focusing on both idiographic and nomothetic aspects, although the majority of talks used regularized partial correlation …
The Association for Behavioral and Cognitive Therapies (ABCT) hosts its 50-year anniversary conference in New York City in a few days. I browsed through the program and found 4 different symposia in which presenters will talk about empirical psychopathological network research, covering eating and weight disorders, OCD, anxiety disorders, and …
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, …
Sacha Epskamp had the great idea to create the public Facebook group Psychological Dynamics. The group serves as a central place to share and discuss news, blogs and publications related, but not limited to, psychological research on dynamical systems, complex systems, network models, time-series analysis, causal discovery and phase transitions. …
