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Digest of Education Statistics
2007 Tables and Figures All Years of Tables and Figures Most Recent Full Issue of the Digest


Table 108. Percentage of children demonstrating specific cognitive and motor skills at about 9 months of age, by child's age at assessment: 2001-02
Specific ability Percent of children 8 through 10 months old Percent of children 11 through 13 months old Percent
of children
14 through
22 months old
Total 8 months 9 months 10 months Total 11 months 12 months 13 months
1 2 3 4 5 6 7 8 9 10
Survey population percentage distribution 72.2 (0.98) 16.1 (0.82) 34.8 (0.71) 21.3 (0.61) 20.9 (0.79) 10.6 (0.49) 6.2 (0.37) 4.1 (0.30) 6.5 (0.50)
                                     
Cognitive abilities                                    
Explores objects in play 99.2 (0.03) 98.7 (0.06) 99.2 (0.02) 99.4 (0.03) 99.8 (0.02) 99.7 (0.04) 99.9 (0.01) 100.0 (0.01) 100.0 (0.01)
Explores with purpose 87.8 (0.38) 79.6 (0.75) 88.0 (0.31) 93.8 (0.27) 97.4 (0.14) 96.4 (0.26) 98.8 (0.08) 99.4 (0.05) 99.3 (0.10)
Babbles 46.7 (0.41) 37.9 (0.48) 45.2 (0.33) 55.8 (0.53) 72.1 (0.43) 64.9 (0.57) 76.7 (0.63) 84.1 (0.57) 89.0 (0.62)
Early problem solving 3.4 (0.11) 1.4 (0.08) 2.7 (0.07) 6.0 (0.21) 17.2 (0.46) 11.2 (0.49) 20.1 (0.77) 28.4 (0.98) 46.4 (1.47)
Uses words 0.5 (0.02) 0.2 (0.01) 0.4 (0.01) 1.0 (0.05) 5.0 (0.25) 2.7 (0.23) 5.9 (0.42) 9.9 (0.66) 26.7 (1.42)
                                     
Motor abilities                                    
Eye-hand coordination 90.7 (0.13) 87.7 (0.25) 90.6 (0.16) 93.1 (0.13) 96.4 (0.11) 95.3 (0.16) 97.1 (0.16) 98.2 (0.17) 99.0 (0.09)
Sitting 93.4 (0.13) 90.4 (0.28) 93.4 (0.16) 95.7 (0.13) 98.2 (0.08) 97.4 (0.13) 98.6 (0.12) 99.3 (0.12) 99.6 (0.06)
Prewalking 73.2 (0.40) 63.4 (0.75) 72.9 (0.49) 81.1 (0.43) 91.4 (0.33) 88.1 (0.52) 93.6 (0.47) 96.4 (0.53) 98.2 (0.22)
Independent walking 18.5 (0.37) 10.4 (0.44) 16.8 (0.41) 27.4 (0.63) 55.2 (1.06) 42.9 (1.33) 62.2 (1.77) 76.4 (1.93) 89.1 (1.04)
Balance 1.1 (0.04) 0.5 (0.03) 0.9 (0.03) 1.9 (0.10) 10.1 (0.50) 5.0 (0.36) 12.6 (0.95) 19.8 (1.34) 43.1 (1.86)
NOTE: This table is based on a survey that sampled children born in 2001 and was designed to collect information about them when the children were about 9 months of age (i.e., 8 to 10 months). As shown in the table, some children were older than this, although only 6.5 percent were over 13 months of age. Standard errors appear in parentheses.
SOURCE: U.S. Department of Education, National Center for Education Statistics, Children Born in 2001: First Results From the Base Year of the Early Childhood Longitudinal Study, Birth Cohort. (This table was prepared February 2006.)

2007 Tables and Figures All Years of Tables and Figures Most Recent Full Issue of the Digest