Thursday 11 November

Time zones are CET times.
Workshops - Session 1
Workshop 1A
09:00 – 12:30 
ICOMBO – Discussion of activities conducted by members
Hosted by: Monica Rankin

In this session, members will share projects, research, and other activities they have conducted since 2017.
Workshop 1B
10:00 – 12:30
Microbiome Workshop
Co-organisers: Chika Honda, Helga Szabo, Rie Tamizawa, David Tarnoki

Workshops – Session 2
Workshop 2A
13:00 – 16:30
Twin Systematic Reviews – Part 1
Hosted by: Shayesteh Jahanfar, David Haas, Donald O’Mathuna, Isha Taneja, Tiffany Duque

This workshop is a top-rated standard author training offered by "Cochrane Trainers" from four universities across the United States: Tufts (Boston), Ohio State University (Ohio), Indiana University (Indiana), and the University of Michigan (Ann Arbor). We also have the coordinator of the Cochrane US Network (Seattle) on board.  You will learn how to conduct a systematic review of twin studies using Cochrane's high standard methodology. The concepts discussed include ten steps of developing a protocol,  meta-analysis, heterogeneity, and writing a review.  We also introduce software(s) Revman, Covidence, and Grade_Pro.  Small group activities will help you develop protocols to be registered with Cochrane Collaboration. Participants can apply for a mentorship program
following the workshop, which supports them throughout all the steps for six months to 1 year.

This workshop will be continued on Friday afternoon.
Workshop 2B Details still to come

FRIDAY 12 November

Time zones are CET times.
Workshops - Session 3
Workshop 3A
09:00 – 12:30
ICOMBO – Discussion of future directions for ICOMBO
Hosted by: Monica Rankin

In this session, members will discuss possible research projects, ways to facilitate more sharing of resources and communication, and other topics of interest to members.
Workshop 3B Details still to come

  • Workshops - Session 4
    Workshop 4A
    13:00 – 16:30
    Twin Systematic Reviews – Part 2
    Hosted by: Shayesteh Jahanfar, David Haas, Donald O’Mathuna, Isha Taneja, Tiffany Duque

    This workshop is a continuation of the workshop held on Thursday afternoon.
    Workshop 4B Details still to come

  • Conference Opening Session
    19:00 – 19:10 Opening remarks
    Professor Jeffrey Craig, Dr Asma Khalil, Dr. Ádám & Dávid Tárnoki
    19:10 – 20:00 Keynote: L Scott Forbes, PhD “The Evolutionary Biology of Twinning in Humans”
    Introduction: Nancy L Segal, PhD
    20:00 – 20:45 BOOK PANEL
    summary (pdf)

    Discussion: Five recent and forthcoming books on twins – Live discussion and

    Q & A with the authors and editors
    Co-chairs: Nancy L Segal, PhD & Professor Jeffrey Craig

    Twin Studies in Behavioral and Health Research: Current Status, Prospects and Applications, São Paulo, Brazil: Digital book in open access: USP Open Books Portal, 2021
    Tania Kiehl Lucci PhD, E. Otta and T.K. Lucci (Eds.):
    University of São Paulo, Brazil

    Why Are Monozygotic Twins Different: From Genetics to Environment London: Elsevier. A. Matias, & I. Blickstein (Eds.)
    Alexandra Matias, MD, PhD
    University of Porto, Portugal

    Deliberately Divided: Inside the Controversial Study of Twins and Triplets Adopted Apart, Lanham, MD: Rowman & Littlefield, 2021
    Nancy L. Segal, PhD
    California State University, Fullerton, USA

    Twin Research: The Complete Reader, New York, NY: Elsevier (in press).
    Tarnoki, A.D. Tarnoki, D.L., Harris, J., & Segal, N.L. (Eds.)
    David L. Tarnoki, MD, PhD:   
    Semmelweis University, Hungary

    Twins - Superstitions and Marvels, Fantasies and Experiments, Reaktion Books, London, 2021.
    William Viney, PhD
    Department of Anthropology, Goldsmiths, University of London
  • SATURDAY 13 November

  • Time zones are CET times.
  • 09:00-10:30 Session 1

    Co-chairs: John  Hopper, Catherine Bennett
    11:00 – 12:30 Session  2

    Longitudinal birth cohorts
    Co-chairs: Jeff Craig, Sonia Brescianini
    13:00 – 14:30
    Session  3

    Bulmer session: The Biology of Twinning
    Co-chairs: Nils Lambalk, Catherine Derom
    15:00 – 16:30 Session  4

    Twin Studies: Psychological, Biological and Social Perspectives
    summary (pdf)

    Co-Chairs: Nancy L. Segal, PhD
    Department of Psychology, California State University-Fullerton

    Maria Antoinetta Stazi, PhD
    Center for Behavioural Science and Mental Health, Rome

    This panel draws together a diverse group of speakers whose presentations are set within a variety of theoretical frameworks. The different topics to be addressed cover a range of behaviors, issues and controversies within the field of psychology, e.g., behavioral genetics, evolutionary psychology, social psychology and other approaches. An underlying theme is that twins can be used to study and inform virtually every measurable behavioral trait.

    Twin Tempos: Cross-Correlations of Young Twins’ Social and Emotional Skills
    Lisabeth A. DiLalla, PhD
    Department of Psychology, University of Southern Illinois

    Triangulating Genetic Methods to Uncover the Contribution of Cognitive and Noncognitive Skills to Academic Achievement Throughout the School Years
    Margherita Malanchini, PhD
    School of Biological and Chemical Sciences, Queen Mary University

    Three winship Myths: Setting the Record Straight
    Joan A. Friedman, PhD
    Institute of Contemporary Psychoanalysis, Los Angeles

    Narrowing in on What Really Matters: Testing Criminological Theory Using Twin-Based Methodology"
    Joseph L. Nedelec, PhD:
    School of Criminal Justice, University of Cincinnati

    Exceptional Sibships and Curious Couples: General Intelligence Findings From Chinese Twins Reared Apart and Together and Virtual Twins
    Nancy L. Segal, PhD
    Department of Psychology, California State University-Fullerton

    19:00 – 19:45 

    20:00 – 20:45
    Session 5
    Discussion: Participant engagement and user involvement in twin research
    Co-chairs: Carolyn Lister & Petra Zwijnenburg 

    Discussion: Controversial topic(s) in twin research
    Co-chairs: Professor Asma Khalil & Mark Kilby

SUNDAY 14 November

Time zones are CET times.
09:00-10:30 Session 6

New twin registries and studies
Co-chairs: Yoon-Mi Hur & Bianka Forgo

Major changes and developments in the Hungarian Twin Registry website related to the conversion from a voluntary to a population-based registry
Marton Piroska, Hungary

Isfahan Twin Registry
Professor Nizal Sarrafzadegan

Professor Bas Heijmans

University of Sao Paulo Twin Panel
Professor Emma Otta
11:00 – 12:30 Session 7
Clinical trials
Co-chairs: Petra Zwijnenburg, Athula Sumathipala
13:00 – 14:30
Session 8

Cognition & neurodevelopmental disorders
Co-chairs: Jaakko Kaprio & Ida Karlsson

15:00 – 16:30

15:00 – 16:00
Session 9

Chronic Diseases and Cancer
Co-chairs: Wendy Cozen & Joohon Sung

ICOMBO Business Meeting
Chair: Monica Rankin

19:00 – 19:45

19:45 – 20:00

20:00 – 20:15
Session 10

ISTS AGM & Elections
Professor Jeffrey Craig, Professor Asma Khalil

Professor Asma Khalil

Closing Remarks
Professor Jeffrey Craig, Dr. Dávid Tárnoki


  • Basic Medical Science Center

  • Address: H-1094 Budapest, Tűzoltó utca 37-47, Hungary
    Google map

  • How to reach: Subway 3, at Semmelweis Klinikák station