John Wallert

About me
Publications
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Public outreach and news

About me

Docent, Assistant Professor, and Clinical Psychologist at Karolinska Institutet. Team Leader for Team Modelling in Rück Research group. Course Leader for the free-standing KI course "Artificial Intelligence in Mental Healthcare".

Research

My research interests include causal modelling, predictive modelling, machine learning, psychiatry, behavioural genetics, involuntary care, psychological interventions, diagnostics, suicidology, behavioural cardiology, psychometrics, cognition, intelligence, aging, neuropsychological assessment, mental chronometry, evolutionary psychology, music, and entrainment.

Articles

Article: JOURNAL OF AFFECTIVE DISORDERS. 2025;389:119619
Psychometric evaluation and optimization of the self-rated Montgomery-Åsberg Depression Rating Scale
Johansson F; Adler M; Kaldo V; Ruck C; Wallert J
Article: PSYCHOLOGICAL MEDICINE. 2025;55:e226
Effect of internet-delivered exposure therapy versus healthy lifestyle promotion for patients with persistent physical symptoms (SOMEX1): a randomized controlled trial with planned moderator analysis
Hybelius J; Hammarberg SAW; Salomonsson S; Wachtler C; Epstein M; Olsson A; Strand E; Winter LS; Akerlund T; Bjorkander D; Kosic A; Chahin G; Wallert J; Toth-Pal E; Nordin S; Axelsson E
Article: AMERICAN JOURNAL OF MEDICAL GENETICS PART B-NEUROPSYCHIATRIC GENETICS. 2025;198(5):e33026
Association Between Polygenic Risk and Symptom Severity Change After Cognitive Behavioral Therapy for Obsessive-Compulsive Disorder
Backman J; Wallert J; Halvorsen M; Roelstraete B; de Schipper E; Strom NI; Eide TO; Hoffler KD; Mattheisen M; Hansen B; Kvale G; Hagen K; Haavik J; Mataix-Cols D; Ruck C; Crowley JJ
Article: DISCOVER MENTAL HEALTH. 2025;5(1):82
Polygenic scores and symptom severity change after internet-delivered cognitive behaviour therapy for depression and anxiety
Baeckman J; Wallert J; Halvorsen M; Crowley JJ; Mataix-Cols D; Rueck C
Article: BMC PSYCHIATRY. 2025;25(1):555
Clinical, genetic, and sociodemographic predictors of symptom severity after internet-delivered cognitive behavioural therapy for depression and anxiety
Kravchenko O; Backman J; Mataix-Cols D; Crowley JJ; Halvorsen M; Sullivan PF; Wallert J; Ruck C
Article: INTERNATIONAL JOURNAL OF BEHAVIORAL MEDICINE. 2025;:1-10
Understanding General Somatic Symptom Burden: Insights from a Systematic Review of Factor Analyses Pertaining to the Patient Health Questionnaire 15 (PHQ-15) and Somatic Symptom Scale 8 (SSS-8).
Hybelius J; Kosic A; Salomonsson S; Wachtler C; Wallert J; Nordin S; Axelsson E
Article: COGNITIVE BEHAVIOUR THERAPY. 2025;54(2):231-245
Sub-groups of emotion dysregulation in youth with nonsuicidal self-injury: latent profile analysis of a randomized controlled trial
Flygare O; Ojala O; Ponten M; Klintwall L; Karemyr M; Sjoblom K; Wallert J; Hellner C; Nilbrink J; Bellander M; Bjureberg J
Article: CLINICAL NEUROPSYCHOLOGIST. 2025;39(2):424-438
Methods for assessment of rey auditory verbal learning test performance in memory clinic patients and healthy adults - at the cross-roads of learning theory and clinical utility
Almkvist O; Rennie A; Westman E; Wallert J; Ekman U
Journal article: INTERNATIONAL JOURNAL OF CARDIOLOGY. 2025;420:132876
"Organizational and patient-level predictors for attaining key risk factor targets in cardiac rehabilitation after myocardial infarction: The Perfect-CR study☆" [International journal of Cardiology 371C (2022) 40-48].
Michelsen HO; Henriksson P; Wallert J; Back M; Sjolin I; Schlyter M; Hagstrom E; Kiessling A; Held C; Hag E; Nilsson L; Schiopu A; Zaman MJ; Leosdottir M
Article: EUROPEAN JOURNAL OF CARDIOVASCULAR NURSING. 2025;24(2):253-263
Associations between cardiac rehabilitation structure and processes and dietary habits after myocardial infarction: a nationwide registry study
Hag E; Back M; Henriksson P; Wallert J; Held C; Stomby A; Leosdottir M
Article: JOURNAL OF AFFECTIVE DISORDERS. 2025;368:420-428
Early change in specific depression symptoms and later outcome in internet-delivered psychotherapy for depression: A cohort study and cross-lagged network analysis
Johansson F; Flygare O; Backman J; Fondberg R; Axelsson E; Forsell E; Cervin M; Kaldo V; Ruck C; Wallert J
Article: SCANDINAVIAN JOURNAL OF PSYCHOLOGY. 2024;66(3):315-326
Exhaustion Disorder in Primary Care: A Comparison With Major Depressive Disorder and Adjustment Disorder.
Sennerstam V; Hedman-Lagerlöf E; Nilsonne G; Lekander M; Rück C; Wallert J; Axelsson E; Lindsäter E
Article: JAMA NETWORK OPEN. 2024;7(11):e2446603
Measurement Properties of the Patient Health Questionnaire-15 and Somatic Symptom Scale-8: A Systematic Review and Meta-Analysis.
Hybelius J; Kosic A; Salomonsson S; Wachtler C; Wallert J; Nordin S; Axelsson E
Article: MOLECULAR PSYCHIATRY. 2024;30(4):1510-1517
A burden of rare copy number variants in obsessive-compulsive disorder
Halvorsen MW; de Schipper E; Baeckman J; Strom NI; Hagen K; Lindblad-Toh K; Karlsson EK; Pedersen NL; Wallert J; Bulik CM; Fundin B; Landen M; Kvale G; Hansen B; Haavik J; Mattheisen M; Rueck C; Mataix-Cols D; Crowley JJ
Article: CARDIOVASCULAR DIABETOLOGY. 2024;23(1):330
Structured diabetes care routines in cardiac rehabilitation are associated with increased diabetes detection and improved treatment after myocardial infarction: a nationwide observational study
Sharad B; Eckerdal N; Magnusson M; Michelsen HO; Jujic A; Lidin M; Mellbin L; Shaat N; Pingel R; Wallert J; Hagstrom E; Leosdottir M
Article: PEERJ COMPUTER SCIENCE. 2024;10:e2104
Deep learning-based dimensional emotion recognition for conversational agent-based cognitive behavioral therapy
Striegl J; Richter JW; Grossmann L; Brastad B; Gotthardt M; Ruck C; Wallert J; Loitsch C
Article: IJC HEART AND VASCULATURE. 2024;51:101392
Provision of professional interpreters and Heart School attendance for foreign-born compared with native-born myocardial infarction patients in Sweden
Zwackman S; Leosdottir M; Hagstrom E; Jernberg T; Karlsson J-E; Lawesson SS; Michelsen HO; Ravn-Fischer A; Wallert J; Alfredsson J
Article: BMJ OPEN. 2023;13(10):e069427
Swedish multimodal cohort of patients with anxiety or depression treated with internet-delivered psychotherapy (MULTI-PSYCH)
Boberg J; Kaldo V; Mataix-Cols D; Crowley JJ; Roelstraete B; Halvorsen M; Forsell E; Isacsson NH; Sullivan PF; Svanborg C; Andersson EH; Lindefors N; Kravchenko O; Mattheisen M; Danielsdottir HB; Ivanova E; Boman M; Fernandez de la Cruz L; Wallert J; Ruck C
Journal article: EUROPEAN NEUROPSYCHOPHARMACOLOGY. 2023;75:s109-s110
EXPLORING THE CONTRIBUTION OF POLYGENIC RISK SCORES TO EXPLAINING VARIANCE IN SYMPTOM LEVEL AFTER INTERNET-DELIVERED COGNITIVE BEHAVIORAL THERAPY FOR DEPRESSION AND ANXIETY DISORDERS
Kravchenko O; Boberg J; Mataix-Cols D; Crowley J; Halvorsen M; Wallert J; Ruck C
Journal article: EUROPEAN NEUROPSYCHOPHARMACOLOGY. 2023;75:s165
POLYGENIC RISK SCORES FOR PREDICTING SYMPTOM CHANGE AFTER INTERNET-DELIVERED COGNITIVE BEHAVIORAL THERAPY FOR DEPRESSION AND ANXIETY DISORDERS
Kravchenko O; Boberg J; Mataix-Cols D; Crowley J; Halvorsen M; Wallert J; Ruck C
Article: STRESS AND HEALTH. 2023;39(4):813-827
Characterization of exhaustion disorder and identification of outcomes that matter to patients: Qualitative content analysis of a Swedish national online survey
Lindsater E; Svardman F; Rosquist P; Wallert J; Ivanova E; Lekander M; Soderholm A; Ruck C
Article: NEUROBIOLOGY OF AGING. 2023;129:41-49
Comparing three neuropsychological subgrouping approaches in subjective and mild cognitive impairment from a naturalistic multicenter study
Rennie A; Ekman U; Wallert J; Muehlboeck J-S; Eriksdotter M; Wahlund L-O; Ferreira D; Westman E
Article: BJOG-AN INTERNATIONAL JOURNAL OF OBSTETRICS AND GYNAECOLOGY. 2023;130(8):891-901
Pre-pregnancy participation and performance in world's largest cross-country ski race as a proxy for physical exercise and fitness, and perinatal outcomes: Prospective registry-based cohort study
Axfors C; Wikstrom A-K; Poromaa IS; Hallmarker U; Michaelsson K; Wallert J; White RAA; Skalkidou A
Article: INTERNATIONAL JOURNAL OF CARDIOLOGY. 2023;381:120-127
Association of anxiety or depression with risk of recurrent cardiovascular events and death after myocardial infarction: A nationwide registry study
Flygare O; Boberg J; Ruck C; Hofmann R; Leosdottir M; Mataix-Cols D; Fernandez de la Cruz L; Richman P; Wallert J
Article: JOURNAL OF ALZHEIMERS DISEASE. 2023;92(2):605-614
The Association Between Temporal Atrophy and Episodic Memory Is Moderated by Education in a Multi-Center Memory Clinic Sample
Gyllenhammar M; Rennie A; Padilla DF; Wallert J; Rydstrom A; Wahlund L-O; Eriksdotter M; Westman E; Ekman U
Article: CNS SPECTRUMS. 2023;28(1):33-40
Executive functioning in body dysmorphic disorder and obsessive-compulsive disorder
Chen LL; Flygare O; Wallert J; Enander J; Ivanov VZ; Ruck C; Djurfeldt D
Journal article: INTERNATIONAL JOURNAL OF CARDIOLOGY. 2023;371:40-48
Organizational and patient-level predictors for attaining key risk factor targets in cardiac rehabilitation after myocardial infarction: The Perfect-CR study (Retracted article. See vol. 420, 2025)
Michelsen HO; Henriksson P; Wallert J; Back M; Sjolin I; Schlyter M; Hagstrom E; Kiessling A; Held C; Hag E; Nilsson L; Schiopu A; Zaman MJ; Leosdottir M
Article: BEHAVIOR THERAPY. 2023;54(1):43-50
Empirically Defining Treatment Response and Remission in Obsessive-Compulsive Disorder Using the Obsessive-Compulsive Inventory-Revised
Flygare O; Wallert J; Chen L-L; Fernandez de la Cruz L; Lundstroem L; Mataix-Cols D; Rack C; Andersson E
Journal article: EUROPEAN NEUROPSYCHOPHARMACOLOGY. 2022;63:e192-e193
T45. POLYGENIC RISK SCORES, DATA-DRIVEN LONGITUDINAL CLUSTERS OF WEEKLY SYMPTOM TRAJECTORIES, AND POST PSYCHOTHERAPY REMISSION IN MAJOR DEPRESSIVE DISORDER
Wallert J; Boberg J; Kravchenko O; Kaldo V; Mataix-Cols D; Crowley J; Rück C
Journal article: EUROPEAN NEUROPSYCHOPHARMACOLOGY. 2022;63:e138-e139
MULTI-PSYCH - A MULTIMODAL DATA PROJECT FOR DEPRESSION AND ANXIETY DISORDERS IN SWEDISH ROUTINE CLINICAL CARE
Wallert J; Boberg J; Kaldo V; Roelstraete B; Crowley J; Halvorsen M; Isacsson NH; Sullivan P; Kravchenko O; Mattheisen M; Ivanova E; Boman M; Fernandez de la Cruz L; Mataix-Cols D; Ruck C
Journal article: BJPSYCH OPEN. 2022;8(5):e176
Exhaustion disorder: scoping review of research on a recently introduced stress-related diagnosis (8, pg e159, 2022)
Lindsater E; Svardman F; Wallert J; Ivanova E; Soderholm A; Fondberg R; Nilsonne G; Cervenka S; Lekander M; Ruck C
Article: TRANSLATIONAL PSYCHIATRY. 2022;12(1):357
Predicting remission after internet-delivered psychotherapy in patients with depression using machine learning and multi-modal data
Wallert J; Boberg J; Kaldo V; Mataix-Cols D; Flygare O; Crowley JJ; Halvorsen M; Ben Abdesslem F; Boman M; Andersson E; Isacsson NH; Ivanova E; Ruck C
Article: DISABILITY AND REHABILITATION. 2022;44(15):3834-3842
Self-perceived cognitive status and cognitive challenges associated with cardiac rehabilitation management: experiences of elderly myocardial infarction patients
Liljeroos T; Puthoopparambil SJ; Wallert J; Held C; Olsson EMG
Article: EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE. 2022;11(6):491-500
Association between β-blocker dose and quality of life after myocardial infarction: a real-world Swedish register-linked study
Humphries S; Wallert J; Mars K; Held C; Hofmann R; Olsson EMG
Article: SCIENTIFIC REPORTS. 2022;12(1):642
Improving smoking cessation after myocardial infarction by systematically implementing evidence-based treatment methods
Leosdottir M; Warjerstam S; Michelsen HO; Schlyter M; Hag E; Wallert J; Larsson M
Journal article: EUROPEAN HEART JOURNAL. 2021;42(Supplement_1):ehab724.1409
Improving smoking cessation after myocardial infarction by systematically implementing evidence-based treatment methods: a prospective observational cohort study
Leosdottir M; Warjerstam S; Michelsen HO; Schlyter M; Hag E; Wallert J; Larsson M
Article: AGING-US. 2021;13(10):13430-13442
Cognitive dedifferentiation as a function of cognitive impairment in the ADNI and MemClin cohorts
Wallert J; Rennie A; Ferreira D; Muehlboeck J-S; Wahlund L-O; Westman E; Ekman U
Article: EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE. 2021;10(4):372-379
Association between β-blocker dose and cardiovascular outcomes after myocardial infarction: insights from the SWEDEHEART registry
Mars K; Wallert J; Held C; Humphries S; Pingel R; Jernberg T; Olsson EMG; Hofmann R
Article: JOURNAL OF MEDICAL INTERNET RESEARCH. 2021;23(5):e25465
Internet-Based Cognitive Behavioral Therapy for Patients Reporting Symptoms of Anxiety and Depression After Myocardial Infarction: U-CARE Heart Randomized Controlled Trial Twelve-Month Follow-up
Humphries SM; Wallert J; Norlund F; Wallin E; Burell G; von Essen L; Held C; Olsson EMG
Article: BMC GERIATRICS. 2020;20(1):93
The MemClin project: a prospective multi memory clinics study targeting early stages of cognitive impairment
Ekman U; Ferreira D; Muehlboeck J-S; Wallert J; Rennie A; Eriksdotter M; Wahlund L-O; Westman E
Article: FRONTIERS IN PSYCHOLOGY. 2020;11:600841
Evaluation of a Novel Psychological Intervention Tailored for Patients With Early Cognitive Impairment (PIPCI): Study Protocol of a Randomized Controlled Trial
Ekman U; Kemani MK; Wallert J; Wicksell RK; Holmstrom L; Ngandu T; Rennie A; Akenine U; Westman E; Kivipelto M
Article: EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY. 2020;27(2):145-154
Attending Heart School and long-term outcome after myocardial infarction: A decennial SWEDEHEART registry study
Wallert J; Olsson EMG; Pingel R; Norlund F; Leosdottir M; Burell G; Held C
Article: INTERNATIONAL JOURNAL OF CARDIOLOGY. 2019;292:19-24
Cardiac rehabilitation goal attainment after myocardial infarction with versus without diabetes: A nationwide registry study
Wallert J; Mitchell A; Held C; Hagstrom E; Leosdottir M; Olsson EG
Article: EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY. 2019;26(14):1510-1518
Persistent emotional distress after a first-time myocardial infarction and its association to late cardiovascular and non-cardiovascular mortality
Lissaker CT; Norlund F; Wallert J; Held C; Olsson EMG
Article: JOURNAL OF MEDICAL INTERNET RESEARCH. 2018;20(10):e10754
Predicting Adherence to Internet-Delivered Psychotherapy for Symptoms of Depression and Anxiety After Myocardial Infarction: Machine Learning Insights From the U-CARE Heart Randomized Controlled Trial
Wallert J; Gustafson E; Held C; Madison G; Norlund F; von Essen L; Olsson EMG
Journal article: EUROPEAN HEART JOURNAL. 2018;39(suppl_1):ehy566.p5407
P5407Predicting adherence to internet-delivered cognitive behaviour therapy for comorbid symptoms of depression and anxiety after myocardial infarction
Wallert J; Gustavson E; Held C; Madison G; Norlund F; Von Essen L; Olsson E
Journal article: EUROPEAN HEART JOURNAL. 2018;39(suppl_1):ehy564.223
223The secondary preventive heart school intervention and long-term outcome after myocardial infarction
Wallert J; Olsson E; Norlund F; Pingel R; Leosdottir M; Burell G; Held C
Article: EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY. 2018;25(9):910-920
Factors associated with emotional distress in patients with myocardial infarction: Results from the SWEDEHEART registry
Norlund F; Lissaker C; Wallert J; Held C; Olsson EMG
Journal article: JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY. 2018;71(11):a1884
WEB-BASED COGNITIVE BEHAVIOR THERAPY FOR DEPRESSION AND ANXIETY AMONG PATIENTS WITH A RECENT MYOCARDIAL INFARCTION: THE U-CARE HEART RANDOMIZED TRIAL
Norlund F; Wallin E; Olsson E; Walled J; Burell G; Held C
Article: JOURNAL OF MEDICAL INTERNET RESEARCH. 2018;20(3):e88
Internet-Based Cognitive Behavioral Therapy for Symptoms of Depression and Anxiety Among Patients With a Recent Myocardial Infarction: The U-CARE Heart Randomized Controlled Trial
Norlund F; Wallin E; Olsson EMG; Wallert J; Burell G; von Essen L; Held C
Article: FRONTIERS IN AGING NEUROSCIENCE. 2018;10:144
Differentiating Patients at the Memory Clinic With Simple Reaction Time Variables: A Predictive Modeling Approach Using Support Vector Machines and Bayesian Optimization
Wallert J; Westman E; Ulinder J; Annerstedt M; Terzis B; Ekman U
Article: INTELLIGENCE. 2017;64:9-17
The worst performance rule with elderly in abnormal cognitive decline
Wallert J; Ekman U; Westman E; Madison G
Article: AMERICAN HEART JOURNAL. 2017;191:12-20
Temporal changes in myocardial infarction incidence rates are associated with periods of perceived psychosocial stress: A SWEDEHEART national registry study
Wallert J; Held C; Madison G; Olsson EMG
Journal article: EUROPEAN HEART JOURNAL. 2017;38(suppl_1):ehx502.p2509
P2509Associations of emotional distress in patients with first myocardial infarction. Results from SWEDEHEART registry
Norlund F; Lissaker C; Olsson EM; Wallert J; Held C
Article: BMC MEDICAL INFORMATICS AND DECISION MAKING. 2017;17(1):99
Predicting two-year survival versus non-survival after first myocardial infarction using machine learning and Swedish national register data
Wallert J; Tomasoni M; Madison G; Held C
Article: JOURNAL OF PSYCHOSOMATIC RESEARCH. 2017;97:30-37
Emotional distress as a predictor of statin non-adherence among Swedish first-time myocardial infarction patients, 2006-2013
Lissaker CT; Wallert J; Held C; Olsson E
Article: EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY. 2017;24(6):639-646
Young adulthood cognitive ability predicts statin adherence in middle-aged men after first myocardial infarction: A Swedish National Registry study
Wallert J; Lissaker C; Madison G; Held C; Olsson E
Article: INTERNATIONAL JOURNAL OF CARDIOLOGY. 2017;231:13-17
Cognitive ability, lifestyle risk factors, and two-year survival in first myocardial infarction men: A Swedish National Registry study
Wallert J; Madison G; Held C; Olsson E
Article: FRONTIERS IN HUMAN NEUROSCIENCE. 2014;8:738
Recovery after aerobic exercise is manipulated by tempo change in a rhythmic sound pattern, as indicated by autonomic reaction on heart functioning
Wallert J; Madison G
Article: FRONTIERS IN PSYCHOLOGY. 2014;5:1011
Feminist activist women are masculinized in terms of digit-ratio and social dominance: a possible explanation for the feminist paradox
Madison G; Aasa U; Wallert J; Woodley MA
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Employments

Assistant Professor, Department of Clinical Neuroscience, Karolinska Institutet, 2022-2027
Assistant Professor, Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, 2022-2026

Degrees and Education

Docent, Karolinska Institutet, 2024

About me

Research

Articles

Employments

Degrees and Education

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