Last updated: November 11 2020

Hamaker, E.L.,  Mulder, J.D., &  van IJzendoorn, M.H. (2020). Description, prediction and causation: Methodological challenges of studying child and adolescent developmentDevelopmental Cognitive Neuroscience, 46, 100867, ISSN 1878-9293, https://doi.org/10.1016/j.dcn.2020.100867.

article link: https://doi.org/10.1016/j.dcn.2020.100867

Van IJzendoorn, M.H. & Bakermans-Kranenburg, M.J. (2020). Problematic cost-utility analysis of interventions for behavior problems in children and adolescents.

van IJzendoorn & Bakermans-Kranenburg 2020 NDCAD Problematic cost–utility analysis ofinterventions for behavior problems in children and adolescents

In The Lancet Psychiatry a letter on the use of attachment theory in perinatal, infant and child psychiatry: From attachment to mental health and back

galbally et al. 2020 From attachment to mental health and back. The Lancet Psychiatry

The Lancet papers on (de-)institutionalisation have been published:



A recording of the Lancet webinar on institutionalisation is available here:


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This website is about scientific work conducted on the intriguing puzzle of parenting and its influence on child development in the era of the genome and the brain. The ‘Dutch Blog‘ and ‘Nieuws‘ are in the Dutch language, as these are notes pertaining to local issues.

The banner is part of a winter landscape painted by Hendrick Avercamp (1585 – 1634), in fond memory of three wonderful Frisian Eleven Cities Skating Tours (Elfstedentochten).

Sitting in the shadow of the statue of Charles Darwin in the garden of Christ’s College in Cambridge as a reminder of his immense courage and brilliant contributions


Darwin suffered from ‘bad hair days’ too, see Darwin quote:

Marinus van IJzendoorn studies the social, psychological and neurobiological determinants of parenting and child development, with special emphasis on attachment, emotion regulation, differential susceptibility, and child maltreatment. Central question is whether and how parents and other caregivers shape children’s development in the current era of the genome and the brain.

His research was part of PEARL –Program for Emotion regulation and Attachment Research in Leiden, the research program of the Centre for Child and Family Studies at Leiden University, the Netherlands. PEARL has been dissolved by the end of 2017, after decades of productive collaborative work with a large and enthusiastic team of colleagues and co-workers. Alan Sroufe evaluated PEARL in June 2016 as follows: “This is an extraordinary program. The team is highly productive, and the cutting edge research being carried out is of the highest quality.”

At Leiden University Marinus is a Professor Emeritus (since his obligatory retirement age for his age cohort in the Netherlands) but he continues to be involved in several Leiden research programs, among others the Leiden Consortium for Individual Development (L-CID; since May 2018 as Scientific Consultant), 3G Family Lab, and Father Trials (directed by Marian Bakermans-Kranenburg, now moved to the Vrije Universiteit Amsterdam).

(See website).
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At Erasmus University Rotterdam he is a professor of human development in the Department of Psychology, Education, and Child Studies (DPECS) (See website) and one of the co-leaders of Generation R (See website). (See website).

Since October 1, 2017, he is Honorary Senior Visiting Fellow, Department of Public Health and Primary Care, School of Clinical Medicine, University of Cambridge, UK, and in 2019 he was a Visiting Fellow at Sidney Sussex College founded by Lady Frances Sidney, with the saying ‘Dieu me Garde de Calomnie’ (Lady Frances Sidney, Countess of Sussex,1531–1589)

In 2018 a small company Beagle Advice, Research and Development started in the domain of parenting and child development.

Another courageous man: Pablo Neruda:

‘Don’t be vain’ someone had scrawled
on my wall
I don’t recognize
the script or hand of
whoever left that line
in the kitchen. No one I invited, clearly.
He came in from the roof.
So who am I
supposed to answer? The wind.
Listen to me, wind.
For many years,
the vainest
have tossed in my face
their own empty vanities,
that is, they show me the door
I open at night, the book
I write,
the bed
that waits to receive me,
the house I build,
that is, that is, maliciously
they make signs with their fingers
their viny fingers,
and all their self-love
they dump in my face,
they call me the things they are,
they bark at me their secrets.

Scientific Genealogy going back to von Gudde and von Goethe

EduTree – Marinus van Ijzendoorn Family Tree s