TABLE 1.

Participant Demographics

Pseudonym	Sex	Age, y	Grade	Primary Sport	Concussion History
Susie	Female	18	12	Basketball	1 (nonsport)
Cody	Male	16	11	Football	None
Jack	Male	15	10	Football	None
Greg	Male	15	10	Football	1 (nonsport)
Robert	Male	18	12	Wrestling	1 (sport)
Julie	Female	14	9	Soccer	None
Paul	Male	18	12	Football	3 (sport)
Sarah	Female	16	10	Soccer	3 (sport)
Charlie	Male	14	9	Football	1 (sport)
Andrew	Male	15	9	Basketball	Not reported
Jane	Female	13	8	Soccer	None
Benjamin	Male	16	11	Football	3 (sport)