I am also applying to UT Dallas and I don't think they've sent out their interviews yet. I have couple of friends ( one who has near-perfect scores) that are also applying to UT Dallas - and nothing yet. Hang in there!
Just spoke to a person at Duke (Neurobio), she said the first round of interviews are (were) out - Domestic and Int'l.
They'll meet again on 1/13 to decide who gets on the second round. Good luck to all.
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Applying: Duke, OSU, Cold Harbor, UTDallas