Hi Qinqin, Information on twin zygosity by self report (ZygositySR) and twin zygosity by genetics (ZygosityGT) are both only available in ConnectomeDB with restricted access. Note, ZygosityGT only has a value when both twins in the pair have genetic data to compare and have been verified to have the same parents (MotherID and FatherID). Note also that because of the way we recruited twin families and because sometimes one twin in a pair did not participate in the study (because they did not meet eligibility criteria, etc.), there are several twins by self report that do not have a cotwin in the DB.
If you need Restricted access, use this form<https://store.humanconnectome.org/data/data-use-terms/DataUseTerms_HCP_RestrictedAccess_26Jan2016.pdf> to apply. Note: if you are not a PI, you need to also have your PI apply. When you have access, please look at the How to Explore HCP Data in ConnectomeDB section on pp.23-25 of the S1200 Reference Manual<https://www.humanconnectome.org/documentation/S1200/HCP_S1200_Release_Reference_Manual.pdf> to learn how to set filters on the ConnectomeDB Dashboard for your search for groups of subjects by ZygositySR, ZygosityGT, and the Study Completion filters for the different study modalities. Once you have the group you want, you can download CSV spreadsheets with the open access Behavioral or Restricted access data for your filtered group of subjects, and do further sorting there. Best, Jenn Jennifer Elam, Ph.D. Scientific Outreach, Human Connectome Project Washington University School of Medicine Department of Neuroscience, Box 8108 660 South Euclid Avenue St. Louis, MO 63110 314-362-9387<tel:314-362-9387> [email protected]<mailto:[email protected]> www.humanconnectome.org<http://www.humanconnectome.org/> ________________________________ From: [email protected] <[email protected]> on behalf of 李琴琴 <[email protected]> Sent: Wednesday, March 8, 2017 4:17:02 AM To: hcp-users Subject: [HCP-Users] About the numbers of DZ twins and MZ twins Dear HCP team, I am doing an investigation of HCP for my upcoming project, and I cannot find exact numbers of DZ twins and MZ twins in your manual and the website. I am wondering where can I find numbers of MZ twins and DZ twins that have participated in each modality and task. Is it also in the restricted data? Thanks, Qinqin Lee State Key Laboratory of Cognitive Neuroscience and Learning Beijing Normal University,100875 _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
