Table 1.

Sample Summary by Demographic Category

	Full Sample Calibration (N=1130)	Looking While Listening Hand-coding Subsample (N=10)	Familiarization Hand-Coding Subsample (N=10)
Age (months)  5.50–8.49  8.50–11.49  11.50–14.49  14.50–17.49  17.50–20.49  20.5–24.49	162 (14.34%) 221 (19.56%) 173 (15.31%) 172 (15.22%) 171 (15.14%) 231 (20.44%)	0 (0%) 3 (30%) 3 (30%) 0 (0%) 3 (30%) 1 (10%)	2 (20%) 2 (20%) 1 (10%) 2 (20%) 3 (30%) 0 (0%)
Gender  Female  Male	552 (49%) 578 (51%)	5 (50%) 5 (50%)	5 (50%) 5 (50%)
Race/Ethnicity  Any race, Hispanic  Asian, Non-Hispanic  Black, Non-Hispanic  Other, Non-Hispanic  White, Non-Hispanic	333 (29%) 26 (2%) 239 (21%) 111 (10%) 421 (37%)	0 (0%) 0 (0%) 3 (30%) 1 (10%) 6 (60%)	2 (20%) 0 (0%) 1 (10%) 1 (10%) 6 (60%)
Parent Education  Less than high school  High school GED  Some college  Bachelor’s degree  Greater than Bachelors	44 (4%) 199 (18%) 355 (31%) 320 (28%) 212 (19%)	0 (0%) 1 (10%) 3 (30%) 3 (30%) 3 (30%)	1 (10%) 1 (10%) 4 (40%) 3 (30%) 1 (10%)