MATR Newsletters

Issues of MATR's newsletter, "Twin Matters," can be downloaded using Adobe Acrobat Reader. If you don't have Acrobat Reader installed on your computer, you can download it free by going to Adobe's website. Click on the link below to view a particular volume.

If you would prefer a written version, please contact us.


Volume XXXII PDF logo, Fall 2016

  • Study Updates: Adolescent & Young Adult Twin Study (AYATS)
  • Announcements: The MATR says ‘Thank you’, Calling families of recent juvenile study participants!, New Study Opportunities for ABCD and Text 4 Thoughts (T4T), How do we choose our twin studies!
  • Twin Stories: One Twin’s Story of Loss and Aspiration

Volume XXXI PDF logo, Spring 2016

  • Study Updates: Mood & Immune Regulation in Twins (MIRT), Adolescent & Young Adult Twin Study (AYATS), Juvenile Anxiety Study (JAS)
  • Announcements: A token of our appreciation…, Message from the AYATS Principal Investigator, How we collect information online, How we work, Multiples Family Day
  • Twin Stories: Astronaut (and twin), Scott Kelly returns to Earth!, MATR Twins in BBC Documentary “How to Stay Young”

Volume XXX PDF logo, Fall 2015

  • Study Updates: Juvenile Anxiety Study (JAS) and Adolescent & Young Adult Twin Study (AYATS), Study Results: MATR Twins Help Researchers Find…, Mood & Immune Regulation in Twins (MIRT), EMBODY Study
  • Announcements: Southern Women’s Show Ticket Winners, Save the Dates!, MATR Recruitment Finalized: Genetics & Epigenetics of Healthy Aging (GHA)

Volume XXIX PDF logo, 2015

  • Study Updates: Study Snap Shots: Juvenile Anxiety Study (JAS), Adolescent and Young Adult Twin Study (AYATS), Genetics of Health Aging (GHA) Study, Mood and Immune Regulation in Twins (MIRT)
  • Announcements: Multiples Family Day 2015, Raffle Drawing Recipients Announced
  • Science Corner: We Are Identical!, The Case of Mistaken Zygosity, The Genetics of Twinning, Quaternary Marriages

Volume XXVIII PDF logo, 2014

  • Study Updates: Updates on the Juvenile Anxiety Study (JAS) and the Adolescent and Young Adult Twin Study (AYATS), Genetics and Epigenetics of Heathy Aging in Twins (GHA)
  • Announcements: Mood and Immune Regulation in Twins (MIRT) Still Scheduling Appointments, Save the Date for Multiples Family Day 2015, New Study on Relationships and Health, Study Opportunities for Families with Juvenile and Young Adult Twins, Twins in the Headlines
  • Science Corner: Two Placentas Does Not Always Mean Fraternal

Volume XXVII PDF logo, 2014

  • Study Updates: Study Snap Shots, Juvenile Anxiety Study (JAS), Study for Adolescent and Young Adult Twins (AYATS), Relationships and Health, Mood and Immune Regulation in Twins (MIRT)
  • Announcements: Help Us Grow!, Multiples Family Day 2014 (QR Code)
  • Science Corner: Monoamniotic Twins, NASA’s Unique Twin Research Study

Volume XXVI PDF logo, 2013

  • Study Updates: Juvenile Anxiety Study (JAS) Update, The Genetics and Epigenetics of Healthy Aging in Twins (GHA Study), Implicit Substance Use Attitudes Online Survey for Adolescent Twins and Non-Twin Siblings, Adolescent and Young Adult Twin Study (AYATS), Mood, Immune Regulation and Diabetes Risk (MIRT)
  • Announcements: Do You Know Multiples Who Would Like To Register With Us? New Email Account? Moving? (QR Code), MATR Events, Female Microbiome Study – Winding Down
  • Science Corner: Childhood Adversity and Chromosomal Changes, The Not So Identical Part of Identical Twins

Volume XXV PDF logo, 2013

  • Study Updates: Microbiome Study Winding Down, Juvenile Study for ages 9-11, The Genetics and Epigenetics of Healthy Aging in Twins
  • Announcements: Do You Have Fibromyalgia? An Invitation To All MATR Twins Ages 18 and Older To Participate in Online Survey, Do You Know Another Set of Twins? (QR Code), Start Your Summer at Multiples Day 2013! Moving? (QR Code)
  • Twin Stories: “Nothing Is Unachievable If You Set Your Mind To It”

Volume XXIV PDF logo, 2012

  • Study Updates: Screening MATR Twins for a Study of Sleep Deprivation, Virginia Twin Study of Adolescent Behavioral Development (VTSABD) and the Young Adult Follow Up (YAFU), Understanding Maternal and Fetal Genotype on Risk for Preterm Birth: A Mid-Atlantic Twin Registry Study (MATR), DAD Dissemination Interview, Virginia Adult Twin Study of Psychiatric and Substance Use Disorders (VATSPSUD), Children of Twins Study (COT), Virginia Twin Study of Adolescent Behavioral Development (VTSABD), New Study for Juvenile Twins, The Human Microbiome and Female Health, Rheumatoid Arthritis Study
  • Announcements: Do You Have Fibromyalgia? MATR is actively collecting email addresses, 2013 Multiples Family Days – Save the Dates! Adult Twins – Who Can Refuse For You?

Volume XXIII PDF logo, 2012

  • Study Updates: MATR Online Survey Update, Rheumatoid Arthritis Study, Female Microbiome Study-Innovative Research!
  • Announcements: Southern Women's Show and MAPOM, Happy Retirement to Dr. Lindon Eaves!, TWO Multiples Family Days-Save the Dates!, The MATR, A unique and vital part of VCU Research, Because you asked..., A Call for Emails!!, Were you registered in the MATR as a juvenile?, Reconnecting with Old Friends, Tell a Friend!!! (QR Code)

Volume XXII PDF logo, 2011

  • Study Updates: The Human Microbiome and Female Health, Type 1 Diabetes and Kidney Complications, Stress and Aging Study, Mid-Atlantic Twin Registry Survey, Neuroimaging for Anxiety Disorders
  • Announcements: Calling All Parents of Twins, Female Twins Needed for Study of Women’s Reproductive Health, Study of Rheumatoid Arthritis Recruitment Continues, MATR Events, MATR Update, Do Not Call Registry and the MATR, Successful Launch for the MATR Online Survey

Volume XXI PDF logo, 2011

  • Study Updates: Women’s Health and the Female Microbiome, Microbiome Ad, National Institute of Child Health and Human Development Study (NICHD), Rheumatoid Arthritis Study Begins, Type 1 Diabetes Kidney Complications in Identical Twins, Chromosomes Might be Impacted by Stressful Life Events in Childhood
  • Announcements: MATR Photo and Story Submissions, MATR and VCU’s Center for Clinical and Translational Research (CCTR), New Mid-Atlantic Twin Registry Survey, Details for Multiples Family Day at Kings Dominion
  • Twin Stories: The Genetics of Twinning

Volume XX PDF logo, 2010

  • Study Updates: Human Microbiome Study, Rheumatoid Arthritis Screener, National Institute of Child Health and Human Development Study (NICHD)
  • Announcements: Multiples Family Day Returns to Kings Dominion, Just Let Us Know, Update Your Contact Info, Email Addresses, Diabetes Ad, We Value You
  • Twin Stories: MATR Twins Take Flight into the Future, Sibling Rivalry in Twins

Volume XIX PDF logo, 2010

  • Study Updates: Factors in Human Behavior (Factors in Human Aging , FHA), Microbiome Study, Causes of Parental Behavior (Children of Twins, COT), Genes, Environment and the Development of Substance Use Disorder Initiative (GEDI), National Institute of Child Health and Human Development (NICHD), Stress and Coping (S&C)
  • Announcements: MATR Survey Initiative
  • Kids Corner: Baby animals matching

Volume XVIII PDF logo, 2009

  • Study Updates: Microbiome Study, National Institute of Child Health and Human Development Study (NICHD), Genes, Environment and the Development of Substance Use Disorder Initiative (GEDI)
  • Twin Stories: Love Never Faded, Twin Power!, Love Being Twins!, Trip to Mt Vernon Twice as Memorable, College Discounts for Multiples
  • Kids Corner: Crossword puzzle

Volume XVII PDF logo, 2009

  • Study Updates: Genes, Environment and the Development of Substance Use Disorder Initiative (GEDI), National Institute of Child Health and Human Development Study (NICHD), Factors in Human Aging (FHA), Polycystic Ovary Syndrome (PCOS), Estimating fetal and maternal genetic contributions to premature birth
  • Announcements: Upcoming Microbiome Study, Study Compensation
  • Twin Stories: Quaternary Marriage
  • Kids Corner:  Maze

Volume XVI PDF logo, 2008

  • Study Updates: National Institute of Child Health and Human Development (NICHD), Genes, Environment and the Development of Substance Use Disorder Initiative (GEDI), Aging and Genomic Changes: Role of Environment/Genetics (Factors in Human Aging, FHA), Genetic and Environmental Causes of Polycystic Ovary Syndrome (PCOS)
  • Announcements: MATR’s New Logo, Study Selection, Meet the MATR, Refusals: Study vs. MATR, See A Study You Are Interested In?
  • Twin Stories: The Land of Twins, Mirror Image Twins, Multiple Birth Facts
  • Kids Corner: Word search

Volume XV PDF logo, 2008

  • Study Updates: Genes, Environment and the Development of Substance Use Disorder Initiative (GEDI), Dr. Kenneth Kendler reports progress to date on the Stress and Coping Project (S & C), The Effects of Genes on the Development of Psychiatric Conditions-National Institutes of Health and Dr. Jack Hettema (GAD-MRI), Doctors at Duke Study Genetic and Environmental Causes of Polycystic Ovary Syndrome (PCOS), Examining the Maternal and Fetal Genotypes on Risk to Preterm Birth
  • Announcements: Upcoming study on Parkinson’s Disease, Upcoming study on Chromosomal Changes Acquired as People Age, Collection of email addresses
  • Kids Corner: Crossword puzzle
  • Answers to Crossword Puzzle word logo (8/2008)

Volume XIV PDF logo, 2007

  • Study Updates: UPenn Sleep Study, Polycystic Ovary Syndrome(PCOS), Factors in Human Aging (FHA)
  • Announcements: Collection of email addresses,
  • Twin Stories: School Placement: Pros and Cons of Keeping Twins in the Same Classroom, Famous Twins, The Case of Mistaken Identity, Twins at Play-Twins Really do Have More Fun!, Twins and the Law, Twin Quotes
  • Science Corner: Sir Francis Galton,
  • Kids Corner: Word search

Volume XIII PDF logo,2006

  • Study Updates: Virginia Twin Study of Adolescent Behavior Development (VTSABD), Young Adult Follow-Up study (YAFU), LEI, MRI, Children of Twins study (COT), Research on DNA Collection Methods, Disease Risk Factors for Tobacco Use in Twins, MM3, Environmental Influences on Depression, Anxiety and Alcohol Use (DAD)
  • Announcements: About the MATR, NIEHS Environmental Autoimmunity Group advertisement, Upcoming Studies-UPenn Sleep Study, Polycystic Ovary Syndrome (PCOS), Factors in Human Aging (FHA), Multiples Day Cancelled
  • Twin Stories: Facts about Identical, Fraternal and Half-Identical twins
  • Science Corner: definition for DNA, Genetics timeline highlighting geneticist Gregor Mendel

Volume XII PDF logo, 2005

  • Study Updates: MM3, Environmental Influences on Depression, Anxiety and Alcohol Use, Neuropsychological Assessments for Temperament, Children of Twins Study (COT), Transitions to Adulthood in Female Twins, Neuroimaging of Twins Discordant for Anxiety (GAD-MRI), A Genomic View of Twin Similarity
  • Announcements:  Multiple’s Day at Kings Dominion and Carowinds
  • Twin Stories: Scholarship information

Volume XI PDF logo,2004

  • Announcements: Thank you from the directors, Zygosity testing sites, Computerized File Conversion
  • Twin Stories: Twin Blessings, Twin Rivalry?, Separate or Together, Birth Order and Twins

Volume X PDF logo, 2003

  • Study Updates: Influences on the Use of Legal and Illegal Substances, Environmental Influences on Depression, Anxiety and Alcohol Use, Neuropsychological Assessments for Temperament, Young Adult Follow-Up Study (YAFU), Children of Twins Study (COT), Puerto Rican Infant and Neonatal Twin Study (PRINTS)
  • Announcements: Two Multiples Days-Kings Dominion and Carowinds
  • Twin Stories: Polar Body Twinning, Important Developments in Genetics

Volume IX PDF logo, 2002

  • Study Updates: Influences on the Use of Legal and Illegal Substances (2003), Environmental Influences on Depression, Anxiety and Alcohol Use (2003), Neuropsychological Assessments for Temperament (2003), Parental Effects on Childhood Behavior (Children of Twins-2003)
  • Twin Stories: Twinless Twins, Special Twin Birthdays

Volume VIII PDF logo, 2002

  • Announcements: Do You or Your Twin Pull Your Hair?, Zygosity clinics information
  • Twin Stories: Lights, Camera, Action!, After 40 years-We’re Identical!, Separate or Together-Separation in Schools, Stupid Twin Questions, Twin Myths

Volume VII PDF logo, 2001

  • Study Updates: Risk Factors for Epilepsy and Seizures, New study on chronic fatigue syndrome is underway, Antisocial Behavior, A New Survey for the Mid-Atlantic School Age Twin Study, Affective Neuroscience, The Genetics of Depression, Marriage and Drinking in Female Twins, Influences on the use of legal and illegal substances, Young Adult Follow-Up Study (YAFU)
  • Announcements: Multiple’s Day
  • Kids Corner: Crossword, More Twin Terms

Volume VI PDF logo, 2001

  • Announcements: Seventh annual Multiple’s Day, Changes to the MATR’s website and email address, MATR Adult Health and Personality Survey (AHP), A New Study on the Genetics of Major Depression, New Study on Chronic Fatigue Syndrome
  • Twin Stories: Meet the MATR Twins-Judy Woods and Jill Meads, Stacy and Tracy Byrd, Grant and Greg Vogl
  • Kids Corner: Famous Twins word find

Volume V PDF logo, 2000

  • Study Updates: Cardiovascular Twin Study, Seizure Disorders, Anorexia and Depression, Gender differences in depression and alcohol problems
  • Announcements: Multiples Day at Kings Dominion, Collaboration with brain researchers at the National Institute of Mental Health (NIMH), new mathematical tools help researchers understand development
  • Kids Corner: Crossword puzzle

Volume IV PDF logo, 2000

  • Announcements: The MATR’s Privacy Policy, Multiple’s Day, Identical Twins Needed for Space Research
  • Twin Stories: The Value of Fraternal Twins to Research, Twin Registries Around the World
  • Kids Corner: MATR word find, Twins born in Different Centuries

Volume III PDF logo, 1999

  • Study Updates: The MCV Stress and Coping Twin Study, Male-Male/Male-Female Study, Alcohol Studies, Depression Studies, Genes and Bulimia, Mid-Atlantic School Age Twin Study, Seizure Study and the Virginia Twin Study of Adolescent Behavioral Development (VTSABD)
  • Announcements:  Dr. Kendler’s study with the National Institute on Drug Abuse (NIDA), The Virginia Twin mailed survey, Multiples Family Day
  • Twin Stories: Twin Brothers Survived Okinawa, Big Twins!

Volume II PDF logo, 1998

  • Announcements: Multiples Family Day, resources for twins and their families, Call for Participants for Dr. Colleen Jackson-Cook’s study (books and websites)
  • Twin Stories: Conjoined Twins, Resources for Twins and their Families (books and websites), Twin Facts

Volume I PDF logo, 1997

  • Study Updates: The Virginia Twin Study of Adolescent and Behavioral Development (VTSABD), the Seizure study, the Virginia-North Carolina African-American Adolescent Twin Study on Health, the North Carolina School Age Twin Study and the Stress and Coping Project
  • Announcements: Discusses the merging of the NC and VA Twin Registries, Thanks to Those Responding to New Health Survey, Twin Eye Disease Study, Go to New York!, Establishing an Infant/Pre-School Registry
  • Twin Stories:  Virginia and North Carolina Twin Facts, What You Thought About Our Surveys, The Importance of DNA and We Are Interested in Your Ideas