{"pk":28542,"title":"Developmental changes in the ability to drawdistinctive features of object categories","subtitle":null,"abstract":"How do children’s visual concepts change across childhood,and how might these changes be reflected in their drawings?Here we investigate developmental changes in children’s abil-ity to emphasize the relevant visual distinctions between objectcategories in their drawings. We collected over 13K drawingsfrom children aged 2-10 years via a free-standing drawing sta-tion in a children’s museum. We hypothesized that older chil-dren would produce more recognizable drawings, and that thisgain in recognizability would not be entirely explained by con-current development in visuomotor control. To measure recog-nizability, we applied a pretrained deep convolutional neuralnetwork model to extract a high-level feature representation ofall drawings, and then trained a multi-way linear classifier onthese features. To measure visuomotor control, we developedan automated procedure to measure their ability to accuratelytrace complex shapes. We found consistent gains in the recog-nizability of drawings across ages that were not fully explainedby children’s ability to accurately trace complex shapes. Fur-thermore, these gains were accompanied by an increase in howdistinct different object categories were in feature space. Over-all, these results demonstrate that children’s drawings includemore distinctive visual features as they grow older.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"object representations; child development; visualproduction; deep neural networks"}],"section":"Papers with Oral Presentations","is_remote":true,"remote_url":"https://escholarship.org/uc/item/1gx7k7p7","frozenauthors":[{"first_name":"Bria","middle_name":"","last_name":"Long","name_suffix":"","institution":"Stanford University","department":""},{"first_name":"Judith","middle_name":"E.","last_name":"Fan","name_suffix":"","institution":"University of California, San Diego","department":""},{"first_name":"Zixian","middle_name":"","last_name":"Chai","name_suffix":"","institution":"Stanford University","department":""},{"first_name":"Michael","middle_name":"C.","last_name":"Frank","name_suffix":"","institution":"Stanford University","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2019-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/28542/galley/18413/download/"}]}