Eiko Fried
Associate Professor
- Name
- E.I. Fried Ph.D.
- Telephone
- +31 71 527 2727
- e.i.fried@fsw.leidenuniv.nl
- ORCID iD
- 0000-0001-7469-594X
Eiko is a psychologist, methodologist, and nearly photographer. He obtained his PhD in clinical psychology at the Free University of Berlin, followed by four years of postdoctoral training in methodology at KU Leuven and University of Amsterdam. He returned to clinical psychology in 2018, as Assistant Professor at Leiden University, and was promoted to Associate Professor in 2021. He works at the intersection of clinical psychology, psychiatry, epidemiology, methodology, and complexity science, and enjoys dabbling in philosophy of science. His interests are how to best understand, measure, model, and classify mental health problems—and in improving cumulative psychological science through open science practices. He loves burnt coffee and fast computers, and is humbled to get to work with many fantastic researchers from all over the world.
More information about Eiko Fried
Eiko Fried
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Eiko Fried in APS on Open Science -
Mental health problems during COVID highly variable by symptom cluster and population group -
Rethinking Responsible Scholarship: ‘It is in so many day-to-day decisions, we forget to pause and reflect sometimes’ -
WARN-D: Your personal code yellow - orange - red -
International appreciation for Eiko Fried -
European grant for Eiko Fried to develop a personalised early warning system for depression -
ERC Starting Grants for five young researchers from Leiden University -
Psychology Awards 2019 -
Gravitation grant for team captains Bernet Elzinga and Andrea Evers
Open Science Framework
Research
My interests are how to best understand, measure, model, and classify mental health problems. To do so, I conceptualize mental health or illness as emergent properties that arise from complex, dynamical, biopsychosocial systems, rather than as clear-cut categories with simple causes. I work at the intersection of clinical psychology, psychiatry, epidemiology, methodology, and complexity science, and enjoy learning about philosophy of science. Besides that, I am interested in improving cumulative psychological science through open science practices.
One of my core foci moving forward is developing a personalized, early warning system for depression, called WARN-D, as part of my ERC Starting Grant obtained in 2020 (WARN-D).
Awards
- 2021—Janet Taylor Spence Award for transformative early career contributions to psychological science; Association for Psychological Science.
- 2020 & 2021 & 2022—Clarivate Highly Cited Researcher Award
- 2020 — Commendation of the Society for the Improvement for Psychological Science
- 2019 — Education Award for Best Teacher, Institute of Psychology
- 2018 — APS Rising Star Award; Association for Psychological ScienceAPS Rising Star, 2017
Grants
- PI, ERC Starting Grant, 2020 (1.500.000€, 2021-2025): "Using network theory to predict depression onset and build a personalized early warning system" (WARN-D)
- CO-I, Gravitation/Zwaartekracht Grant, 2019 (19,393,000€, 2019-2028): "New science of mental disorders"
Teaching
- Instructor “Clinical Psychology” & “Experimental Psychopathology”
- 2016 - 2020: over 20 international workshops focused on network analysis, measurement, and theory building and testing.
Tasks support staff
- 2023 - RMOC representative, Clinical & Health Research Master track
- 2023 - Team ‘Responsible Research’ with Anna van’t Veer, creating & teaching workshops to improve research practices in psychology
- 2021 - Research Master Mentor, Clinical & Health Research Master track
- 2020 - Member of Young Academy Leiden, a select group of academics promoting interdisciplinarity, science & policy education, and outreach.
Relevant links
Associate Professor
- Faculteit der Sociale Wetenschappen
- Instituut Psychologie
- Klinische Psychologie
- Fried E.I. Proppert R.K.K. Rieble C.I. (2023), Building an Early Warning System for Depression: Rationale, Objectives, and Methods of the WARN-D Study, Clinical Psychology in Europe 5(3): 1-25 (e10075).
- Elk M. van & Fried E.I. (2023), History repeating:: guidelines to address common problems in psychedelic science, Therapeutic advances in psychopharmacology 13: 1-20.
- Fried I.E. (2023), More on disruption of the default mode network, Current Psychiatry 22(11): e3.
- Günak M.M. Ebrahimi O.V. Pietrzak R.H. Fried E.I. (2023), Using network models to explore the associations between posttraumatic stress disorder symptoms and subjective cognitive functioning, Journal of Anxiety Disorders 99: 1-10 (102768).
- Rosa C.D., Fried E.I., Larson L.R. & Collado S. (2023), Four challenges for measurement in environmental psychology, and how to address them, Journal of Environmental Psychology 85: 101940.
- Naudet F., Fried E.I., Cosgrove L., Turner E., Braillon A. & Cristea I.A. (2022), Review of Psychedelic drugs: more emphasis on safety issues, Nature 611: 449.
- Borsboom D., Deserno M.K., Rhemtulla M., Epskamp S., Fried E.I., McNally R.J., Robinaugh D.J., Perugini M., Dalege J., Costantini G., Isvoranu A.M., Wysocki A.C., Borkulo C.D. van, Bork R. van & Waldorp L.J. (2022), Reply to 'Critiques of network analysis of multivariate data in psychological science', Nature Reviews Methods Primers 2: 1-2 (91).
- Fried E.I. (2022), Studying Mental Health Problems as Systems, Not Syndromes, CURR DIR PSYCHOL SCI 31(6): 500-508.
- Ron J. de, Robinaugh D.J., Fried E.I., Pedrelli P., Jain F.A., Mischoulon D. & Epskamp S. (2022), Quantifying and addressing the impact of measurement error in network models, Behaviour Research and Therapy 157: 1-10 (104163).
- Charvet C., Boutron I., Morvan Y., Berre C. le, Touboul S., Gaillard R., Fried E. & Chevance A. (2022), How to measure mental pain: a systematic review assessing measures of mental pain, Evidence-Based Mental Health 25(4): 1-11 (e4).
- O'Driscoll C., Epskamp S., Fried E.I., Saunders R., Cardoso A., Stott J., Wheatley J., Cirkovic M., Naqvi S.A., Buckman J.E.J. & Pilling S. (2022), Transdiagnostic symptom dynamics during psychotherapy, Scientific Reports 12(1): 1-12 (10881).
- Beurs E. de, Boehnke J.R. & Fried E.I. (2022), Common measures or common metrics?: A plea to harmonize measurement results, Clinical Psychology and Psychotherapy 29(5): 1755-1767.
- Hansen M., Armour C., McGlinchey E., Ross J., Ravn S.L., Andersen T.E., Lindekilde N., Elmose M., Karsberg S. & Fried E. (2022), Investigating the DSM-5 and the ICD-11 PTSD symptoms using network analysis across two distinct samples, Psychological Trauma : 1-11.
- Roefs A., Fried E.I., Kindt M., Martijn C., Elzinga B.M., Evers A.W.M., Wiers R.W., Borsboom D. & Jansen A. (2022), A new science of mental disorders: using personalised, transdiagnostic, dynamical systems to understand, model, diagnose and treat psychopathology, Behaviour Research and Therapy 153: 1-10 (104096).
- Pluut H. & Fried E.I. (26 April 2022), A week in the life of a YAL member. Voices of Young Academics. Leiden: Young Academy Leiden. [blog entry].
- Wekker T. van & Fried E.I. (20 April 2022), Nog veel te vaak ’One size fits all’: WARN-D Klinisch psycholoog Eiko Fried werkt aan een manier om depressies te voorspellen. Leidsch Dagblad, Leidse wetenschap: 11.
- Fried E.I., Flake J.K. & Robinaugh D.J. (2022), Revisiting the theoretical and methodological foundations of depression measurement, Nature Reviews Psychology 1: 358–368.
- Burger J., Isvoranu A.-M., Lunansky G., Haslbeck J.M.B., Epskamp S., Hoekstra R.H.A., Fried E.I., Borsboom D. & Blanken T.F. (2022), Reporting standards for psychological network analyses in cross-sectional data, Psychological Methods : 1-20.
- Hitchcock P.F., Fried E.I. & Frank M.J. (2022), Computational psychiatry needs time and context, Annual Review of Psychology 73(1): 243-270.
- Greene A.L., Eaton N.R., Forbes M.K., Fried E.I., Watts A.L., Kotov R. & Krueger R.F. (2022), Model fit is a fallible indicator of model quality in quantitative psychopathology research: a reply to Bader and Moshagen, Journal of Psychopathology and Clinical Science 131(6): 696–703.
- Stochl J., Fried E. I., Fritz J., Croudace T. J., Russo D. A., Knight C. & Perez J. (2022), On dimensionality, measurement invariance, and suitability of sum scores for the PHQ-9 and the GAD-7, Assessment 29(3): 355–366.
- Greene T., Sznitman S., Contractor A.A., Prakash K., Fried E.I. & Gelkopf M. (2022), The memory-experience gap for PTSD symptoms: the correspondence between experience sampling and past month retrospective reports of traumatic stress symptoms, Psychiatry Research 307: 114315.
- Prnjak K., Fried E., Mond J., Hay P., Bussey K., Griffiths S., Trompeter N., Lonergan A. & Mitchison D. (2022), Identifying components of drive for muscularity and leanness associated with core body image disturbance: a network analysis, PSYCHOL ASSESSMENT 34(4): 353-366.
- Lorenzo-Luaces L., Buss J.F. & Fried E.I. (2021), Heterogeneity in major depression and its melancholic and atypical specifiers: a secondary analysis of STAR*D, BMC Psychiatry 21(1): 1-11.
- Borsboom D., Deserno M.K., Rhemtulla M., Epskamp S., Fried E.I., McNally R.J., Robinaugh D.J., Perugini M., Dalege J., Constantini G., Isvoranu A.M., Wysocki A.C., Borkulo C.D. van, Bork R. van & Waldorp L.J. (2021), Network analysis of multivariate data in psychological science, Nature Reviews Methods Primers 1(1): 58.
- Henry T.R., Robinaugh D.J. & Fried E.I. (2022), On the control of psychological networks, Psychometrika 87(1): 188-213.
- Fried E.I., Koenders M.A. & Blom J.D. (2021), Bleuler revisited: on persecutory delusions and their resistance to therapy, The Lancet Psychiatry 8(8): 644-646.
- FriedE.I., Papanikolaou F. & Epskamp S. (2022), Mental health and social contact during the COVID-19 pandemic: an ecological momentary assessment study in university students, Clinical Psychological Science 10(2): 340-354.
- Simpson-Kent I.L., Fried E.I., Akarca D., Mareva S., Bullmore E.T. & Kievit R.A. (2021), Bridging brain and cognition: a multilayer network analysis of brain structural covariance and general intelligence in a developmental sample of struggling learners, Journal of Intelligence 9(2): .
- Specker E., Fried E.I., Rosenberg R. & Leder H. (2021), Associating with art: a network model of aesthetic effects, Collabra: Psychology 7(1): 1-19.
- Buckman J.E.J., Cohen Z.D., O'Driscoll C., Fried E.I., Saunders R., Ambler G., DeRubeis R.J., Gilbody S., Hollon S.D., Kendrick T., Watkins E., Eley T.C., Peel A.J., Rayner C., Kessler D., Wiles N., Lewis G. & Pilling S. (2021), Predicting prognosis for adults with depression using individual symptom data: a comparison of modelling approaches, Psychological Medicine 53(2): 1-11.
- O'Driscoll C., Buckman J.E.J., Fried E.I., Saunders R., Cohen Z.D., Ambler G., DeRubeis R.J., Gilbody S., Hollon S.D., Kendrick T., Kessler D., Lewis G., Watkins E., Wiles N. & Pilling S. (2021), The importance of transdiagnostic symptom level assessment to understanding prognosis for depressed adults: analysis of data from six randomised control trials, BMC Medicine 19(1): 1-14 (109).
- Robinaugh D.J., Haslbeck J.M.B., Ryan O., Fried E.I. & Waldorp L.J. (2021), Invisible hands and fine calipers: a call to use formal theory as a toolkit for theory construction, Perspectives on Psychological Science 16(4): 725-743.
- Hansen M., Armour C., McGlinchey E., Ross J., Ravn S.L., Andersen T.E., Lindekilde N., Elmose M., Karsberg S. & Fried E.I. (2021), Investigating centrality in PTSD symptoms across diagnostic systems using network analysis, European Journal of Psychotraumatology 12(sup1): 1-3 (1866412).
- Fried E.I., Greene A.L. & Eaton N.R. (2021), The p factor is the sum of its parts, for now, World Psychiatry 20(1): 69-70.
- Fried E.I. (2021), Lack of theory building and testing impedes progress in the factor and network literature, PSYCHOLOGICAL INQUIRY 31(4): 271-288.
- Fried E.I. (2021), Theories and models: what they are, what they are for, and what they are about, PSYCHOLOGICAL INQUIRY 31(4): 336-344.
- Hebbrecht K., Stuivenga M., Birkenhäger T., Morrens M., Fried E.I., Sabbe B. & Giltay E.J. (2020), Understanding personalized dynamics to inform precision medicine: a dynamic time warp analysis of 255 depressed inpatients, BMC Medicine 18.
- Kendler K.S., Aggen S.H., Werner M. & Fried E.I. (2020), A topography of 21 phobic fears: network analysis in an epidemiological sample of adult twins, Psychological Medicine 52(13): 2588-2595.
- Flake JK Fried EI (2020), Measurement Schmeasurement: Questionable Measurement Practices and How to Avoid Them, ADV METH PRACT PSYCH 3(4): 456-465.
- Duek O., Spiller T.R., Pietrzak R.H., Fried E.I. & Harpaz-Rotem I. (2021), Network analysis of PTSD and depressive symptoms in 158,139 treatment-seeking veterans with PTSD, Depression and Anxiety 38(5): 554-562.
- Fried EI (2020), Theories and Models: What They Are, What They Are for, and What They Are About, PSYCHOL INQ 31(4): 336-344.
- Patalay P. & Fried E.I. (2020), Editorial perspective: prescribing measures: unintended negative consequences of mandating standardized mental health measurement, Journal of Child Psychology and Psychiatry : .
- Cai N., Choi K.W. & Fried E.I. (2020), Reviewing the genetics of heterogeneity in depression: operationalizations, manifestations and etiologies, Human Molecular Genetics 29(R1): R10-R18.
- Abend R., Bajaj M.A., Coppersmith D.D.L., Kircanski K., Haller S.P., Cardinale E.M., Pine D.S., Fried E.I. & et al. (2021), A computational network perspective on pediatric anxiety symptoms, Psychological Medicine 51(10): 1752-1762.
- Taquet M., Quoidbach J. & Fried E.I. et al (2020), Mood Homeostasis Before and During the Coronavirus Disease 2019 (COVID-19) Lockdown Among Students in the Netherlands, JAMA Psychiatry : 1-3.
- Chevance A., Ravaud P., Tomlinson A., Le Berre C., Teufer C.B., Touboul S., Fried E.I., Gartlehner G., Cipriani A. & Thi Tran V. (2020), Identifying outcomes for depression that matter to patients, informal caregivers, and health-care professionals: qualitative content analysis of a large international online survey, The Lancet Psychiatry 7(8): 692-702.
- Eeden W.A. van Hemert A.M. van Carlier I.V.E. Penninx B.W.J.H. Lamers F. Fried E.I. Schoevers R. Giltay E.J. (2020), Basal and LPS-stimulated inflammatory markers and the course of individual symptoms of depression, Translational Psychiatry 10(235): 1-12.
- Fried E.I. & Robinaugh D.J. (2020), Systems all the way down: embracing complexity in mental health research, BMC Medicine 18: 205.
- Fried E.I., Coomans F. & Lorenzo-Luaces L. (2020), The 341 737 ways of qualifying for the melancholic specifier, The Lancet Psychiatry 7(6): 479-480.
- Fried E.I., Borkulo C.D. van & Epskamp S. (2021), On the importance of estimating parameter uncertainty in network psychometrics: a response to Forbes et al. (2019), Multivariate Behavioral Research 56(2): 243-248.
- Greene T., Gelkopf M., Fried E.I., Robinaugh D.J. & Pickman L.L. (2020), Dynamic Network Analysis of Negative Emotions and DSM‐5 Posttraumatic Stress Disorder Symptom Clusters During Conflict, Journal of Traumatic Stress 33(1): 72-83.
- Hilland E., Landrø N.I., Kraft B., Tamnes C.K., Fried E.I., Maglanoc L.A. & Jonassen R. (2020), Exploring the links between specific depression symptoms and brain structure: a network study, Psychiatry and Clinical Neurosciences 74(3): 220-221.
- Fried E.I. (12 December 2019), Waarom de manier om depressie te testen faalt. Interview door B. Braun. Interviewed by Braun Bart for Leids Universitair Weekblad Mare, Wetenschap: 10. [interview].
- Waszczuk M.A., Eaton N.R., Krueger R.F., Shackman A., Fried E.I., Kotov R., WaldmanI.D., ZaldD.H., Lahey B.B., Patrick C.J., Conway C.C., Ormel J., Hyman S.E., Fried E.L., Forbes M.K., Docherty A.R., Althoff R.R., Bach B., Chmielewski M., DeYoung C.G., Forbush K.T., Hallquist M., Hopwood C.J., Ivanova M.Y., Jonas K.G., Latzman R.D., Markon K.E., Mullins-Sweatt S.N., Pincus A.L., Reininghaus U., South S.C., Tackett J.L., Watson D., Wright A.G.C. & (2020), Redefining phenotypes to advance psychiatric genetics: Implications from hierarchical taxonomy of psychopathology, Journal of Abnormal Psychology 129(2): 143-161.
- De Ron J., Fried E.I. & Epskamp S. (2020), Psychological networks in clinical populations: investigating the consequences of Berkson's bias, Psychological Medicine : 1-9.
- Fritz J., Stochl J., Fried E.I., Goodyer I.M., Borkulo C.D. van, Wilkinson P.O. & Harmelen A.-L. van (2019), Unravelling the complex nature of resilience factors and their changes between early and later adolescence, BMC Medicine 17: e203.
- Fried E.I., Von Stockert S., Haslbeck J.M.B., Lamers F., Schoevers R.A. & Penninx B.W.J.H. (2020), Using network analysis to examine links between individual depressive symptoms, inflammatory markers, and covariates, Psychological Medicine 50(16): 2682 - 2690.
- Greene T Gelkopf M Fried EI Robinaugh DJ Pickman LL (2020), Dynamic Network Analysis of Negative Emotions and DSM-5 Posttraumatic Stress Disorder Symptom Clusters During Conflict, J TRAUMA STRESS 33(1): 72-83.
- Heino M.T.J., Knittle K., Fried E., Sund R., Haukkala A., Borodulin K., Uutela A., Araujo-Soares V., Vasankari T. & Hankonen N. (2019), Visualisation and network analysis of physical activity and its determinants: Demonstrating opportunities in analysing baseline associations in the Let’s Move It trial, Health Psychology and Behavioral Medicine 7(1): 269-289.
- De Beurs D., Fried E.I., Wetherall K., Cleare S., O' Connor D.B., Ferguson E., O'Carroll R.E. & O' Connor R.C. (2019), Exploring the psychology of suicidal ideation: A theory driven network analysis, Behaviour Research and Therapy 120: e103419.
- Hartung T.J., Fried E.I., Mehnert A., Hinz A. & Vehling S. (2019), Frequency and network analysis of depressive symptoms in patients with cancer compared to the general population, Journal of Affective Disorders 256: 295-301.
- Adolf J.K. & Fried E.I. (2019), Ergodicity is sufficient but not necessary for group-to-individual generalizability, Proceedings of the National Academy of Sciences 116(14): 6540-6541.
- Conway C.C., Forbes M.K., Forbush K.T., Fried E.I., Hallquist M.N., Kotov R., Mulins-Sweatt S.N., Shackman A.J., Skodol A.E., South S.C., Sunderland M., Waszczuk M.A., Zald D.H., Afzali M.H., Bornovalova M.A., Caragher N., Docherty A.R., Jonas K.G., Krueger Patalay P., Pincus A.L., Tackett J.L., Reininghaus U., Waldman I.D., Wright A.G.C., Zimmerman J., Bach B., Bagby R.M., Chmielewski M., Cicero D.C., Clark L.A., Dalgleish T., DeYoung C.G., Hopwood C.J., Ivanova M.Y., Latzman R.D., Patrick C.J., Ruggero C.J., Samuel D.B., Watson D. & Eaton N.R. (2019), A Hierarchical Taxonomy of Psychopathology Can Transform Mental Health Research, Perspectives on Psychological Science 14(3): 419-436.
- McWilliams L.A. & Fried E.I. (2019), Reconceptualizing adult attachment relationships: A network perspective, Personal Relationships 26(1): 21-41.
- Faelens F., Hoorelbeke K., Fried E., De Raedt R. & Koster E.H.W. (2019), Negative influences of Facebook use through the lens of network analysis, Computers in Human Behavior 96: 13-22.
- Sin-Ying L., Fried E.I. & Eaton N.R. (2019), The association of life stress with substance use symptoms: A network analysis and replication, Journal of Abnormal Psychology 129(2): 204-214.
- Molendijk M.L., Fried E.I. & Van der Does W. (2018), The SMILES trial: Do recruitment practices explain the remarkably large effect?, BMC Medicine 16: e243.
- Briganti G., Fried E.I. & Linkowski P. (2019), Network analysis of Contingencies of Self-Worth Scale in 680 university students, Psychiatry Research 272: 252-257.
- Aalbers G., McNally R.J., Heeren A., Wit S. de & Fried E.I. (2018), Social Media and Depression Symptoms: A Network Perspective, Journal of Experimental Psychology: General 148(8): 1454-1462.
- Epskamp S., Fried E.I., Borkulo C.D. van, Robinaugh D.J., Marsman M., Dalege J., Rhemtulla M. & Cramer A.O.J. (2020), Investigating the utility of fixed-margin sampling in network psychometrics, Multivariate Behavioral Research : 1-15.
- Fritz J., Fried E.I., Goodyer I.M., Wilkinson P.O. & Van Harmelen A.-L. (2018), A Network Model of Resilience Factors for Adolescents with and without Exposure to Childhood Adversity, Scientific Reports 8(15774): 1-13.
- Rodebaugh T.L., Tonge N.A., Piccirillo M.L., Fried E.I., Horenstein A., Morrison A.S., Goldin P., Gross J.J., Lim M.H., Fernandez K.C., Blanco C., Schneier F.R., Bogdan R., Thompson R.J. & Heimberg R.G. (2018), Does centrality in a cross-sectional network suggest intervention targets for social anxiety disorder?, Journal of Consulting and Clinical Psychology 86(10): 831-844.
- Rouquette A., Pingault J.-B., Fried E.I., Orri M., Falissard B., Kossakowski J.J., Vitaro F., Tremblay R., Cote S.M. & Borsboom D. (2018), Emotional and Behavioral Symptom Network Structure in Elementary School Girls and Association With Anxiety Disorders and Depression in Adolescence and Early Adulthood. A Network Analysis, JAMA Psychiatry 75(11): 1173-1181.
- Borsboom D., Robinaugh D.J., Fried E.I., Rhemtulla M., Cramer A.O.J. & Psychosystems Group (2018), Robustness and replicability of psychopathology networks, World Psychiatry 17(2): 143-144.
- Briganti G., Kempenaers C., Brauna S., Fried E.I. & Linkowski P. (2018), Network analysis of empathy items from the interpersonal reactivity index in 1973 young adults, Psychiatry Research 265: 87-92.
- Fonseca-Pedrero E., Ortuño J., Debbané M., Chan R.C.K., Cicero D., Zhang L.C., Brenner C., Barkus E., Linscott R.J., Kwapil T., Barrantes-Vidal N., Cohen A., Raine A., Compton M.T., Tone E.B., Suhr J., Inchausti F., Bobes J., Fumero A., Giakoumaki S., Tsaousis I., Preti A., Chmielewski M., Laloyaux J., Mechri A., Aymen Lahmar M., Wutrich V., Laroi F., Badcock J.C., Jablensky A., Isvoranu A.M., Epskamp S. & Fried E.I. (2018), The Network Structure of Schizotypal Personality Traits, Schizophrenia Bulletin 44(2): 468-479.
- Bos F.M., Fried E.I., Hollon S.D., Bringmann L.F., Dimidjian S., DeRubeis R.J. & Bockting C.L.H. (2018), Cross-sectional networks of depressive symptoms before and after antidepressant medication treatment, Social Psychiatry and Psychiatric Epidemiology 53(6): 617-627.
- Epskamp S. & Fried E.I. (2018), A Tutorial on Regularized Partial Correlation Networks, Psychological Methods 24(4): 617-634.
- Greene T., Gelkopf M., Epskamp S. & Fried E.I. (2018), Dynamic networks of PTSD symptoms during conflict, Psychological Medicine 48(14): 2409-2417.
- Santos Jr.H.P., Kossakowski J.J., Schwartz T.A., Beeber L. & Fried E.I. (2018), Longitudinal network structure of depression symptoms and self-efficacy in low-income mothers, PLoS ONE 13: 1-16.
- Fried E.I., Eidhof M.B., Palic S., Costantini G., Huisman-Van Dijk H.M., Bockting C.L.H., Engelhard I., Armour C., Nielsen A.B.S. & Karstoft K.-I. (2018), Replicability and Generalizability of Posttraumatic Stress Disorder (PTSD) Networks: A Cross-Cultural Multisite Study of PTSD Symptoms in Four Trauma Patient Samples, Clinical Psychological Science 6(3): 335-351.
- Epskamp S., Borsboom D. & Fried E.I. (2018), Estimating psychological networks and their accuracy: A tutorial paper, Behavior Research Methods 50(1): 195-212.
- Von Stockert S.H.H., Fried E.I., Armour C. & Pietrzak R.H. (2018), Evaluating the stability of DSM-5 PTSD symptom network structure in a national sample of U.S. military veterans, Journal of Affective Disorders 229: 63-68.
- Armour C., Fried E.I. & Olff M. (2017), PTSD symptomics: network analyses in the field of psychotraumatology, European Journal of Psychotraumatology 8(s. 3): e1398003.
- Schweren L., Borkulo C.D. van, Fried E.I. & Goodyer I.M. (2018), Assessment of Symptom Network Density as a Prognostic Marker of Treatment Response in Adolescent Depression, JAMA Psychiatry 75(1): 98-100.
- Kendler K.S., Aggen S.H., Flint J., Borsboom D. & Fried E.I. (2018), The centrality of DSM and non-DSM depressive symptoms in Han Chinese women with major depression, Journal of Affective Disorders 227: 739-744.
- Loo H.M. van, Van Borkulo C.D., Peterson R.E., Fried E.I., Aggen S.H., Borsboom D. & Kendler K.S. (2018), Robust symptom networks in recurrent major depression across different levels of genetic and environmental risk, Journal of Affective Disorders 227: 313-322.
- Murphy J., McBride O., Fried E.I. & Shevlin M. (2018), Distress, Impairment and the Extended Psychosis Phenotype: A Network Analysis of Psychotic Experiences in an US General Population Sample, Schizophrenia Bulletin 44(4): 768-777.
- Dejonckheere E Bastian B Fried EI Murphy SC Kuppens P (2017), Perceiving social pressure not to feel negative predicts depressive symptoms in daily life, Depression and Anxiety 34(9): 836-844.
- Heino MTJ Fried EI Lebel EP (2017), Commentary: Reproducibility in Psychological Science: When Do Psychological Phenomena Exist?, Frontiers in Psychology 8: 1-3.
- Halslbeck J.M.B. & Fried E.I. (2017), How predictable are symptoms in psychopathological networks? A reanalysis of 18 published datasets, Psychological Medicine 47(16): 2767-2776.
- Loo H.M. van, Wanders R.B.K., Wardenaar K.J. & Fried E.I. (2018), Problems with latent class analysis to detect data-driven subtypes of depression, Molecular Psychiatry 23(3): 495-496.
No relevant ancillary activities