• measure Individual Differences and Preferences Questionnaire

    Study:L-CID
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Early Childhood Cohort  ECC - T1 ECC - T4 ECC - T6

    Middle Childhood Cohort  MCC - T1 MCC - T3 MCC - T4 MCC - T5 MCC - T6
     
    0
    5
    10
    15
    20
    25
    30
    years
    The Individual Differences and Preferences Questionnaire is a self-developed questionnaire that consists of 12-32 items (exact amount of items differ per measurement wave). It assesses individual differences between the twins according to their parents, in terms of daily interaction, preferences, relationship with the twins, and hobbies.
    Created October 17, 2024 • Updated October 20, 2024

  • measure Twin Social Skills or Differences

    Study:L-CID
    Mode of collection: SelfAdministeredQuestionnaire
    Available measurements:
    Early Childhood Cohort  ECC - T1 ECC - T2 ECC - T3

    Middle Childhood Cohort  MCC - T1 MCC - T2
     
    0
    5
    10
    15
    20
    25
    30
    years
    The Twin Social Skills or Differences Questionnaire is a self-developed questionnaire that consists of 8 (generally open) questions about the perceived differences between the twins in terms of character and social skills.
    Created October 17, 2024 • Updated October 20, 2024
You can also access this registry using the API (see API Docs).