• measure Temperament Questions

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_2 YS_TRIP age 2 YS_TRIP age 1-2
     
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    Temperament questions assess temperament in the children, including crying without a clear cause, and being upset after a disruption of the daily routine.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Raven's Progressive Matrices Test (RPM)

    Study:Netherlands Twin Register
    Mode of collection: MeasurementsAndTests    Behavioral/cognitive task
    Available measurements:
    Young Netherlands Twin Register  YC_BS1 YC_BS2 YE_ATTEF3
     
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    Raven's Progressive Matrices (often referred to simply as Raven's Matrices or RPM) is a non-verbal test used to measure general intelligence and abstract reasoning. It is one of the most common tests administered to both groups and individuals ranging from 5-years-olds to the elderly. It consists of 60 multiple choice questions, listed in order of...
    Created June 5, 2024 • Updated June 20, 2024

  • measure Diet during pregnancy

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_1 YS_TRIP age 1-2
     
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    Diet during pregnancy asks mothers whether they have eaten eggs, dairy products, soy products, fish, and meat during their pregnancy, and whether they followed a vegetarian diet during pregnancy.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Health problems and treatments

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_1 YS_2 YS_3 YS_5 YS_TRF5 YS_7 YS_TRF7 YS_10 YS_TRF10 YS_12 YS_TRF12 YS_DHBQP YS_DHBQ14 YS_DHBQ16 YS_DHBQ18 YC_ACTION BB2 YC_ACTION - BB3 YC_BS1 YC_BS2 YC_DSC YE_FITNSS YE_ATTEF2 YC_ADHMRI YE_COG12 YE_COG18 YS_TRIP age 1 YS_TRIP age 2 YS_TRIP age 1-2 YS_TRIP age 3 YS_TRIP age 4 YS_TRIP age 5 YS_TRIP age 7 YS_TRIP age 10 YS_TRIP age 12
     
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    Health problems and treatments contains questions about health problems, diseases and disorders, including handicaps, treatments (also for mental health problems) and hospitalization.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Breastfeeding

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_2 YS_TRIP age 2 YS_TRIP age 1-2
     
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    Breastfeeding was assessed through the question: Did the twin get breastfeeding?
    Created June 5, 2024 • Updated June 20, 2024

  • measure Kind of Person Implicit Theory Scale

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YE_ATTEF3
     
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    The “Kind of Person” Implicit Theory Scale is an 8-item measure that assesses how much people believe they can change and grow.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Iowa-Netherlands Comparison Orientation Measure (INCOM)

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YE_ATTEF3
     
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    The Iowa-Netherlands Comparison Orientation Measure (INCOM) is an 11-item measure of individual differences in social comparison orientation. It identifies people who are high and low in their tendencies to use social comparisons, but does not identify the motives that respondents have for making social comparisons.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Zygosity (questionnaire)

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_3 YS_5 YS_7 YS_10 YS_12 YS_DHBQ14 YS_DHBQ16 YC_DSC YC_ADHMRI YS_TRIP age 1 YS_TRIP age 1-2 YS_TRIP age 3 YS_TRIP age 4 YS_TRIP age 5 YS_TRIP age 7 YS_TRIP age 10 YS_TRIP age 12
     
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    The Zygosity questionnaire asks parents of twin pairs about the resemblance between the twins to determine whether the twin pair is mono- or dizygotic. This questionnaire consists of 10 questions: 6 items about physical similarities between the twin and 4 items about confusion in identifying the twins by parents and others.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Zygosity (DNA)

    Study:Netherlands Twin Register
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Young Netherlands Twin Register  YS_3 YS_5 YS_7 YS_10 YS_12 YS_DHBQ14 YS_DHBQ16 YC_ACTION BB1_1 YC_ACTION BB1_2 YC_ACTION BB2 YC_ACTION - BB3 YC_BS1 YC_BS2 YC_BS3 YC_DSC YE_FITNSS YE_ATTEF1 YE_ATTEF2 YE_ATTEF3 YC_ADHMRI YE_COG18 YS_TRIP age 1-2 YS_TRIP age 3 YS_TRIP age 4 YS_TRIP age 5 YS_TRIP age 7 YS_TRIP age 10 YS_TRIP age 12
     
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    Zygosity typing based on micro-satellite markers, single nucleotide polymorphisms (SNP), or variable number (short) tandem repeats (VNTRs).
    Created June 5, 2024 • Updated June 20, 2024

  • measure Pregnancies & miscarriages

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_1 YE_COG18 YS_TRIP age 1 YS_TRIP age 1-2
     
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    Pregnancies and Miscarriages contains questions about getting pregnant, including the use of hormone preparations or assisted reproductive technologies, and miscarriages.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Handicap index

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YE_ATTEF3
     
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    In the Handicap index, participants rated statements about how handicapped they had felt during the task performance.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Heart rate

    Study:Netherlands Twin Register
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Young Netherlands Twin Register  YC_BS3 YE_FITNSS YE_ATTEF3 YE_COG18
     
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    Heart rate is the number of times a heart beats per minute and normally ranges between 60 and 100 times for adults. Heart rate variability is the time fluctuation between heart beats.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Surgery and anesthesia

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_2 YS_3 YS_5 YS_7 YS_10 YS_12 YC_BS1 YC_BS2 YE_ATTEF2 YS_TRIP age 2 YS_TRIP age 1-2 YS_TRIP age 3 YS_TRIP age 4 YS_TRIP age 5 YS_TRIP age 7 YS_TRIP age 10 YS_TRIP age 12
     
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    Surgery and anesthesia assesses any experienced surgery, including the insertion of grommets and the removal of tonsils, and general anesthesia.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Apgar score

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_1 YS_TRIP age 1-2
     
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    The Apgar score is a test given to newborns soon after birth to see if extra medical care or emergency care is needed. The Apgar score comprises five components: 1) color, 2) heart rate, 3) reflexes, 4) muscle tone, and 5) respiration, each of which is given a score of 0, 1, or 2. Babies get tested three times: 1 minute after birth, 5 minutes after birth,...
    Created June 5, 2024 • Updated June 20, 2024

  • measure Reading Span Task (RST)

    Study:Netherlands Twin Register
    Mode of collection: MeasurementsAndTests    Behavioral/cognitive task
    Available measurements:
    Young Netherlands Twin Register  YE_ATTEF3
     
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    The reading span task (RST) assesses memory span. The original RST required participants to read series of unconnected sentences aloud and to remember the final word of each sentence of a series (grouped according to the total number of sentences). With each sentence presented on a card, participants were cued to recall the memorized end-of-sentence words...
    Created June 5, 2024 • Updated June 20, 2024

  • measure State-Trait Anxiety Inventory (STAI)

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YE_ATTEF3
     
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    The State-Trait Anxiety Inventory (STAI) assesses anxiety. It distinguishes between a general proneness to anxious behavior rooted in the personality and anxiety as a fleeting emotional state.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Blood pressure

    Study:Netherlands Twin Register
    Mode of collection: MeasurementsAndTests    Biological sample/measurement
    Available measurements:
    Young Netherlands Twin Register  YC_BS3 YE_FITNSS YE_ATTEF3 YE_COG18
     
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    Blood pressure is the force of blood pushing against the walls of arteries as the heart pumps blood around the body. Systolic pressure is the pressure when the heart contracts and pushes blood out and diastolic pressure is the pressure when the heart relaxes and fills with blood. In adults, the systolic pressure normally ranges between 80 and 120 and the...
    Created June 5, 2024 • Updated June 20, 2024

  • measure Implicit Theories of Intelligence Scale for Children (ITIS)

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YE_ATTEF3
     
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    The Implicit Theories of Intelligence Scale for Children (ITIS) measures growth mindset and the extent to which a child believes that her or his intelligence can be improved.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Anthropometry

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_1 YS_2 YS_3 YS_5 YS_7 YS_10 YS_12 YS_DHBQP YS_DHBQ14 YS_DHBQ16 YS_DHBQ18 YC_BS1 YC_BS2 YC_BS3 YC_DSC YE_FITNSS YE_ATTEF2 YE_ATTEF3 YC_ADHMRI YE_COG18 YS_TRIP age 1 YS_TRIP age 2 YS_TRIP age 1-2 YS_TRIP age 3 YS_TRIP age 4 YS_TRIP age 5 YS_TRIP age 7 YS_TRIP age 10 YS_TRIP age 12
     
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    Anthropometric measurements include height, weight, body mass index (BMI), and body circumferences.
    Created June 5, 2024 • Updated June 20, 2024

  • measure Birth

    Study:Netherlands Twin Register
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Young Netherlands Twin Register  YS_1 YC_DSC YE_ATTEF2 YC_ADHMRI YE_COG18 YS_TRIP age 1 YS_TRIP age 1-2
     
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    Birth assesses information on pregnancy duration, placenta and chorionicity, mode of delivery, complications around the delivery, and incubator time.
    Created June 5, 2024 • Updated June 20, 2024
You can also access this registry using the API (see API Docs).