Anonymized data in wide format is provided in the CSV file (immediately loadable into R or JASP) with the following columns as variables: **habCOND**: The habituation condition in which the infant was placed. Labels depend on the particular experiment. **firstTest**: The location of the first stimulus, either 'left' or 'right.' **left**: Looking time to the left-side trial. **right**: Lookng time to the right-side trial. **fam**: Familiarization looking time. **sex**: Sex of the baby, 'm' or 'f.' **ageHours**: Number of hours since birth. **ageMinutes**: Additional minutes since birth. **experiment**: Labels begin with "Exp*" followed by additional reminders of dimensions tested. Descriptions of movies contained in the supplementary folder: **S1. Experiment1_Familiarization6Short.mpg**. Experiment 1, familiarization to 6-syllable sequences paired with a short line, moving stroboscopically but asynchronously with the syllables. Same video used in Experiment 3 without sound. **S2. Experiment1_Familiarization18Long.mpg**. Experiment 1, familiarization to 18- syllable sequences paired with a long line, moving stroboscopically but asynchronously with the syllables. Same video used in Experiment 3 without sound. **S3. Experiment1_Test_6ShortLine_Left.mpg**. Experiment 1, test trial for infants familiarized to 18-syllable sequences paired with a long line. The video includes a 6-syllable sequence paired with a short line, presented on the left side of the screen, presented asynchronously with the syllables and stroboscopically. Same video used in Experiment 3 without sound. **S4. Experiment1_Test_6ShortLine_Right.mpg**. Experiment 1, test trial for infants familiarized to 18-syllable sequences paired with a long line. The video includes a 6-syllable sequence paired with a short line, presented on the right side of the screen, presented asynchronously with the syllables and stroboscopically. Same video used in Experiment 3 without sound. **S5. Experiment1_Test_18LongLine_Left.mpg**. Experiment 1, test trial for infants familiarized to 6-syllable sequences paired with a short line. The video includes an 18-syllable sequence paired with a long line, presented on the left side of the screen, presented asynchronously with the syllables and stroboscopically. Same video used in Experiment 3 without sound. **S6. Experiment1_Test_18LongLine_Right.mpg**. Experiment 1, test trial for infants familiarized to 6-syllable sequences paired with a short line. The video includes an 18-syllable sequence paired with a long line, presented on the right side of the screen, presented asynchronously with the syllables and stroboscopically. Same video used in Experiment 3 without sound. **S7. Experiment2_Familiarization_ShortShort.mpg**. Experiment 2, familiarization to short-duration sequences paired with a short line, moving stroboscopically but asynchronously with the syllables. **S8. Experiment2_Familiarization_LongLong.mpg**. Experiment 2, familiarization to long duration sequences paired with a long line, moving stroboscopically but asynchronously with the syllables. **S9. Experiment2_Test_ShortLeft.mpg**. Experiment 2, test trial for infants familiarized to long sequences paired with a long line. The video includes a short duration sequence paired with a short line, presented on the left side of the screen, presented asynchronously with the syllables and stroboscopically. **S10. Experiment2_Test_ShortRight.mpg**. Experiment 2, test trial for infants familiarized to long sequences paired with a long line. The video includes a short duration sequence paired with a short line, presented on the right side of the screen, presented asynchronously with the syllables and stroboscopically. **S11. Experiment2_Test_LongLeft.mpg**. Experiment 2, test trial for infants familiarized to short sequences paired with a short line. The video includes a long duration sequence paired with a long line, presented on the left side of the screen, presented asynchronously with the syllables and stroboscopically. **S12. Experiment2_Test_LongRight.mpg**. Experiment 2, test trial for infants familiarized to short sequences paired with a short line. The video includes a long duration sequence paired with a long line, presented on the right side of the screen, presented asynchronously with the syllables and stroboscopically. **S13. Experiment4_Familiarization_6Short.mpg**. Experiment 4, familiarization to 6- syllable sequences (matched in duration with 18-syllable sequences) paired with a short line, moving stroboscopically but asynchronously with the syllables. **S14. Experiment4_Familiarization_18Long.mpg**. Experiment 4, familiarization to 18- syllable sequences (matched in duration with 6-syllable sequences) paired with a long line, moving stroboscopically but asynchronously with the syllables. **S15. Experiment4_Test_6Left.mpg**. Experiment 4, test trial for infants familiarized to 18- syllable sequences paired with a long line. The video includes a 6-syllable sequence (matched in duration with the 18-syllable sequence) paired with a short line, presented on the left side of the screen, presented asynchronously with the syllables and stroboscopically. **S16. Experiment4_Test_6Right.mpg**. Experiment 4, test trial for infants familiarized to 18-syllable sequences paired with a long line. The video includes a 6-syllable sequence (matched in duration with the 18-syllable sequence) paired with a short line, presented on the right side of the screen, presented asynchronously with the syllables and stroboscopically. **S17. Experiment4_Test_18Left.mpg**. Experiment 4, test trial for infants familiarized to 6- syllable sequences paired with a short line. The video includes an 18-syllable sequence (matched in duration with the 6-syllable sequence) paired with a long line, presented on the left side of the screen, presented asynchronously with the syllables and stroboscopically. **S18. Experiment4_Test_18Right.mpg**. Experiment 4, test trial for infants familiarized to 6-syllable sequences paired with a short line. The video includes an 18-syllable sequence (matched in duration with the 6-syllable sequence) paired with a long line, presented on the right side of the screen, presented asynchronously with the syllables and stroboscopically. **S19. Experiment5_Familiarization_6MediumCenter.mpg**. Experiment 5, familiarization to 6-syllable sequences paired with a medium line, moving stroboscopically but asynchronously with the syllables. **S20. Experiment5_Familiarization_18MediumCenter.mpg**. Experiment 5, familiarization to 18-syllable sequences paired with a medium line, moving stroboscopically but asynchronously with the syllables. **S21. Experiment5_Test_6CircleLeft.mpg**. Experiment 5, test trial for infants familiarized to 18-syllable sequences paired with a medium line. The video includes a 6-syllable sequence paired with a circle (matched in area to the line), presented on the left side of the screen, presented asynchronously with the syllables and stroboscopically. **S22. Experiment5_Test_6CircleRight.mpg**. Experiment 5, test trial for infants familiarized to 18-syllable sequences paired with a medium line. The video includes a 6-syllable sequence paired with a circle (matched in area to the line), presented on the right side of the screen, presented asynchronously with the syllables and stroboscopically. **S23. Experiment5_Test_18CircleLeft.mpg**. Experiment 5, test trial for infants familiarized to 6-syllable sequences paired with a medium line. The video includes an 18-syllable sequence paired with a circle (matched in area to the line), presented on the left side of the screen, presented asynchronously with the syllables and stroboscopically. **S24. Experiment5_Test_18CircleRight.mpg**. Experiment 5, test trial for infants familiarized to 6-syllable sequences paired with a medium line. The video includes an 18- syllable sequence paired with a circle (matched in area to the line), presented on the right side of the screen, presented asynchronously with the syllables and stroboscopically.