At Birth, Humans Associate “Few” with Left and “Many” with Right Maria Dolores de Hevia, Ludovica Veggiotti, Arlette Streri, Cory D. Bonn  Current Biology  Volume 27, Issue 24, Pages 3879-3884.e2 (December 2017) DOI: 10.1016/j.cub.2017.11.024 Copyright © 2017 Elsevier Ltd Terms and Conditions

Figure 1 Methods and Results of Exp. 1, Number, Duration, and Length Left: (A) Infants are familiarized with a long line and an 18-syllable sequence/long duration and then tested with a 6-syllable sequence/short duration paired with a short line appearing on the left and right sides of the screen in consecutive test trials. (B) Infants are familiarized with a short line and a 6-syllable sequence/short duration and then tested with an 18-syllable sequence/long duration and a long line appearing on the left and right sides of the screen in consecutive test trials. Right: data are represented as mean and bootstrapped 95% CI. Small dots represent individual data points. Average looking times (seconds) during test trials: infants look longer to the line presented on the left than to the one presented on the right when experiencing a decrease from familiarization (18-syllable sequence/long duration) to test (6-syllable sequence/short duration); conversely, infants look longer to the line presented on the right than to the one presented on the left when experiencing an increase from familiarization (6-syllable sequence/short duration) to test (18-syllable sequence/long duration). See also Table S1. Current Biology 2017 27, 3879-3884.e2DOI: (10.1016/j.cub.2017.11.024) Copyright © 2017 Elsevier Ltd Terms and Conditions

Figure 2 Methods and Results of Exp. 2, Duration and Length, and Exp. 3, Length Top, left: (A) Infants are familiarized with a long line and a long duration and then tested with a short duration paired with a short line appearing on the left and right sides of the screen in consecutive test trials. (B) Infants are familiarized with a short line and a short duration and then tested with a long duration paired with a long line appearing on the left and right sides of the screen in consecutive test trials. Bottom, left: (A) Infants are familiarized with a long line and then tested with a short line appearing on the left and right sides of the screen in consecutive test trials. (B) Infants are familiarized with a short line and then tested with a long line appearing on the left and right sides of the screen in consecutive test trials. Top and bottom, right: data are represented as mean and bootstrapped 95% CI. Small dots represent individual data points. Average looking times (seconds) during test trials: infants look equally long to both the left and right lines in test trials across all familiarization conditions. See also Tables S2 and S3. Current Biology 2017 27, 3879-3884.e2DOI: (10.1016/j.cub.2017.11.024) Copyright © 2017 Elsevier Ltd Terms and Conditions

Figure 3 Methods and Results of Exp. 4, Number and Length, and Exp. 5, Number and Duration Top, left: (A) Infants are familiarized with a long line and an 18-syllable sequence and then tested with a 6-syllable sequence paired with a short line appearing on the left and right sides of the screen in consecutive test trials. (B) Infants are familiarized with a short line and a 6-syllable sequence and then tested with an 18-syllable sequence and a long line appearing on the left and right sides of the screen in consecutive test trials. Both numerical sequences are matched in duration. Bottom, left: (A) Infants are familiarized with a line and an 18-syllable sequence and then tested with a 6-syllable sequence paired with a circle appearing on the left and right sides of the screen in consecutive test trials. (B) Infants are familiarized with a line and a 6-syllable sequence and then tested with an 18-syllable sequence paired with a circle appearing on the left and right sides of the screen in consecutive test trials. Right: data are represented as mean and bootstrapped 95% CI. Small dots represent individual data points. Average looking times (seconds) during test trials: infants look longer to the figure presented on the left than to the one presented on the right when experiencing a decrease from familiarization (18-syllable sequence) to test (6-syllable sequence); conversely, infants look longer to the figure presented on the right than to the one presented on the left when experiencing an increase from familiarization (6-syllable sequence) to test (18-syllable sequence). See also Tables S4 and S5. Current Biology 2017 27, 3879-3884.e2DOI: (10.1016/j.cub.2017.11.024) Copyright © 2017 Elsevier Ltd Terms and Conditions