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Related Concept Videos

Case Studies01:22

Case Studies

There are many research methods available to psychologists in their efforts to understand, describe, and explain behavior and the cognitive and biological processes that underlie it.
Genetic Screens02:46

Genetic Screens

Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing  genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
Behavioral Genetics and Its Designs01:23

Behavioral Genetics and Its Designs

Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...

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Related Experiment Video

Updated: May 20, 2026

Cell Lineage Analyses and Gene Function Studies Using Twin-spot MARCM
06:30

Cell Lineage Analyses and Gene Function Studies Using Twin-spot MARCM

Published on: March 2, 2017

The German Twin Family Panel TwinLife: Current State and (Epi-)genetically Informative Satellite Projects.

Bastian Mönkediek1,2, Christian Kandler1,3, Mirko Ruks1

  • 1https://ror.org/02hpadn98Department of Psychology, Bielefeld University, Germany.

Twin Research and Human Genetics : the Official Journal of the International Society for Twin Studies
|May 19, 2026
PubMed
Summary

The TwinLife panel study tracks German twins and their families across four birth cohorts to examine social inequalities over time. This longitudinal research incorporates genetic and epigenetic data for comprehensive life course analysis.

Keywords:
EpigeneticsGermany-wide twin familiesLongitudinal and extended twin family designMolecular geneticsMultiple twin birth cohortsSocial inequality

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Area of Science:

  • Social Sciences
  • Genetics
  • Epidemiology

Background:

  • The TwinLife panel is a German longitudinal study focusing on twin families.
  • It aims to investigate the development of social inequalities throughout the life course.
  • The study utilizes a register-based approach to identify participants.

Purpose of the Study:

  • To provide an overview of the TwinLife German twin family panel.
  • To detail its design, sample characteristics, and assessed constructs.
  • To highlight its potential for longitudinal research on social inequalities.

Main Methods:

  • Recruitment of four birth cohorts of same-sex twin pairs and their families across Germany.
  • Utilizing a multistage process with residents' registration office data for identification.
  • Longitudinal data collection from 2014 to 2025, covering socioeconomic indicators.

Main Results:

  • The initial wave included 4096 twin families, representing diverse socioeconomic backgrounds.
  • The panel has expanded with satellite projects like TwinSNPs and TECS.
  • Data collection covers multiple birth cohorts at different ages (5-23 years at first survey).

Conclusions:

  • TwinLife offers a unique, comprehensive database for life course research.
  • The extended twin family design combined with biological data enhances research potential.
  • The study is valuable for investigating social inequalities using genetic, epigenetic, and geographical information.