A handful of significant scientific findings
with some illustrative publications
There is a persistent lack of replicability in research.
Van IJzendoorn, M.H. (1994). Process model of replication studies: on the relations between different types of replication. In R. van der Veer, Van IJzendoorn, M.H., & J. Valsiner (Eds.), On reconstructing the mind. Replicability in research on human development (pp.57-70). Norwood; NJ.: Ablex.
Van IJzendoorn, M.H. & Bakermans-Kranenburg, M.J. (2021). Replication crisis lost in translation? On translational caution and premature applications of attachment theory. Attachment & Human Development 23, 422-437. https://doi.org/10.1080/14616734.2021.1918453
Rijlaarsdam, J., Pappa, I., Walton, E., Bakermans-Kranenburg, M. J., Mileva-Seitz, V. R., Rippe, R. C. A., Roza, S. J., Jaddoe, V. W. V., Verhulst, F. C., Felix, J. F., Cecil, C. A. M., Relton, C. L., Gaunt, T. R., McArdle, W., Mill, J., Barker, E. D., Tiemeier, H. & van IJzendoorn, M. H. (2016). An epigenome-wide association meta-analysis of prenatal maternal stress in neonates: A model approach for replication. Epigenetics 11(2), 140-9.
Intra-cultural variations in attachment are larger than cross-cultural variations.
Van IJzendoorn, M.H., & Kroonenberg, P.M. (1988). Cross-cultural patterns of attachment. A meta-analysis of the Strange Situation. Child Development, 59, 147-156. doi:10.2307/1130396
Navarrete, M.A., Silva, J., Van IJzendoorn, M.H., & Carcamo, R. A. (2018). Physical and psychosocial development of Mapuche and nonindigenous Chilean toddlers: A modest role of ethnicity. Development and Psychopathology, 30, 1959-1976.
The Berkeley Adult Attachment Interview is valid and uncovers a transmission gap.
Bakermans-Kranenburg, M.J., & Van IJzendoorn, M.H. (1993). A psychometric study of the Adult Attachment Interview: Reliability and discriminant validity. Developmental Psychology, 29, 870-880. doi:10.1037//0012-16188.8.131.520
Verhage, M. L., Schuengel, C., Madigan, S., Fearon, R. M. P., Oosterman, M., Cassibba, R., Bakermans-Kranenburg, M. J. & van IJzendoorn, M. H. (2016). Narrowing the Transmission Gap: A Synthesis of Three Decades of Research on Intergenerational Transmission of Attachment. Psychological Bulletin 142(4), 337-66.
Genetic differential susceptibility is empirically supported.
Bakermans-Kranenburg, M.J. & Van IJzendoorn, M.H. (2006). Gene-environment interaction of the Dopamine D4 receptor (DRD4) and observed maternal insensitivity predicting externalizing behavior in preschoolers. Developmental Psychobiology, 48, 406-409. doi:10.1002/dev.20152
Bakermans-Kranenburg, M.J. & Van IJzendoorn, M.H. (2015).The hidden efficacy of interventions: Gene x Environment experiments from a differential susceptibility perspective. Annual Review of Psychology, 66, 381-409. DOI: 10.1146/annurev-psych-010814-015407
Holocaust trauma persists after 6 decades but is not transmitted to next generations.
Sagi-Schwartz, A, Van IJzendoorn, M.H., Grossmann, K.E., Joels, T. , Grossmann, K., Scharf, M. , Koren-Karie, N., & Alkalay, S. (2003). Child survivors – but not their children –suffer from traumatic Holocaust experiences. American Journal of Psychiatry, 160, 1086-1092.
Van IJzendoorn, M.H., Bakermans-Kranenburg, M.J. & Sagi-Schwartz, A. (2003). Are children of Holocaust survivors less well-adapted? No meta-analytic evidence for secondary traumatization. Journal of Traumatic Stress, 16, 459-469.
Barel, E., Van IJzendoorn, M.H., Sagi-Schwartz, A., & Bakermans-Kranenburg, M.J. (2010). Surviving the Holocaust: A meta-analysis of the long-term sequelae of genocide. Psychological Bulletin, 136, 677-698. doi:10.1037/a0020339
Video-feedback to Promote positive Parenting- Sensitive Discipline (VIPP-SD) enhances parenting and child development
Juffer, F., Bakermans-Kranenburg, M.J. & Van IJzendoorn, M.H. (Eds.) (2008). Promoting positive parenting: An attachment-based intervention. New York/London: Taylor and Francis Group. ISBN 13: 978-0-8058-6352-9.
Juffer, F., Bakermans-Kranenburg, M. J. & van IJzendoorn, M. H. (2017). Pairing attachment theory and social learning theory in video-feedback intervention to promote positive parenting. Current Opinion in Psychology 15, 189-94.
Van IJzendoorn, M.H., Schuengel, C., Wang, Q. & Bakermans-Kranenburg, M.J. (2022, in press). Improving parenting, child attachment and externalizing behaviors: Meta-analysis of the first 25 randomized controlled trials on the effects of Video-feedback Intervention to promote Positive Parenting and Sensitive Discipline. Development & Psychopathology
Child maltreatment should include structural neglect, is partly heritable and causes mental but not physical health issues in adulthood
Van IJzendoorn, M.H., Bakermans-Kranenburg, M.J., Coughlan, B. & Reijman, S. (2020). Child maltreatment antecedents and interventions: Umbrella synthesis and differential susceptibility perspective on risk and resilience. Journal of Child Psychology and Psychiatry, 61, 272-290.
Van IJzendoorn, M.H., Bakermans-Kranenburg, M.J., Duschinsky, R., Goldman, P.S., Fox, N.A., Gunnar, M.R., Johnson, D.E., Nelson, C.A., Reijman, S., Skinner, G.C.M., Zeanah, C.H., & Sonuga-Barke, E.J.S. (2020). Institutionalisation and deinstitutionalisation of children I: A systematic and integrative review of evidence regarding effects on development. The Lancet Psychiatry; 7, 703-720; published online June 23. https://doi.org/10.1016/S2215-0366(19)30399-2.
Warrier, V., Siu Fung Kwong, A., Luo, M., Dalvie, S., Croft, J., Sallis, H. M., Baldwin,J., Munafo, M.R., Nievergelt, C. M., Grant, A. J., Burgess, S., Moore, T. M., Barzilay, R., McIntosh, A., Van IJzendoorn, M.H., Cecil , C.M. (2021). Gene-environment correlations and causal effects of childhood maltreatment on physical and mental health: a genetically informed approach. The Lancet Psychiatry 8 (5), 373-386, DOI:https://doi.org/10.1016/S2215-0366(20)30569-1.
Almost 500,000 persons have read (parts of) the publications
Impact according to citations.
Source: Web of Science with the following term: van ijzendoorn mh : 578 papers, 37,457 citations, H-index=94 (December 29, 2021).
Source: Google Scholar via Harzing’s Publish or Perish with the following terms: “Marinus H. van IJzendoorn” OR “marinus ijzendoorn” OR “M.H. IJzendoorn” OR “Marinus van IJzendoorn”: 97.025 citations, H-index=140, G-index=301 (authors per paper: 3.13) (December 29, 2021).
More than 100,000 citations according to Google Scholar (December 30, 2021)
Highly cited in psychology and psychiatry over the past 10 years.
Listed as Highly Cited Researcher in Psychology/Psychiatry 2021 by Clarivate Analytics
Listed as Highly Cited Researcher in Psychology/Psychiatry 2020 by Clarivate Analytics
Listed as Highly Cited Researcher in Psychology/Psychiatry 2019 by Clarivate Analytics
Listed as Highly Cited Researcher in Psychology/Psychiatry 2018 by Clarivate Analytics
Listed as Highly Cited Researcher in Psychology/Psychiatry 2017 by Clarivate Analytics (formerly Thomson Reuters)
Listed as Highly Cited Researcher in Psychology/Psychiatry 2016 by Thomson Reuters
“Highly Cited Researchers present more than 3,000 authors in 21 main fields of science and the social sciences. These researchers earned the distinction by writing the greatest numbers of reports officially designated by Essential Science Indicators as Highly Cited Papers—ranking among the top 1% most cited for their subject field and year of publication—between 2004 and 2014.” (Thomson Reuters, 2016)
Highly cited across all scientific disciplines over the past 40 years.
“Citation metrics are widely used and misused. We have created a publicly available database of over 100,000 top-scientists that provides standardized information on citations, h-index, co-authorship adjusted hm-index, citations to papers in different authorship positions and a composite indicator. Separate data are shown for career-long and single year impact. Metrics with and without self-citations and ratio of citations to citing papers are given. Scientists are classified into 22 scientific fields and 176 sub-fields. Field- and subfield-specific percentiles are also provided for all scientists who have published at least 5 papers. Career-long data are updated to end-of-2020. The selection is based on the top 100,000 by c-score (with and without self-citations) or a percentile rank of 2% or above.” (Baas, Jeroen; Boyack, Kevin; Ioannidis, John P.A. (2021), “August 2021 data-update for “Updated science-wide author databases of standardized citation indicators””, Mendeley Data, V3, doi: 10.17632/btchxktzyw.3)
According to Ioannidis new ranking system M.H. van IJzendoorn belonged to the top 0.01% of scientists based on impact
In the updated ranking of August 2021 including impact in 2020, the following rankings can be noted:
Worldwide rank across all disciplines: 1328; Worldwide rank in Psychology & Cognitive Sciences: 70; Worldwide rank in Developmental Psychology & Child Development: 18.
Dutch ranking across all disciplines: 22 (N=3856); Dutch ranking in Psychology & Cognitive Sciences as well as in the sub-domain of Developmental Psychology & Child Development: 1