TABLES 



PAGE 



1 . Visual Vocabulary, 7B class. Number of errors per line 10 



2. Understanding of Sentences, 4B class. Number of errors per 



"Set" 12 



3. Visual Vocabulary. Scores of grades 3 to 8 in eighteen cities. 



Also median score 13 



4. Understanding of Sentences. Score of grades 3 to 8 in eighteen 



cities. Also median score 14 



5. Shovtdng the Increase of Reading Ability from Grade to Grade 



in Two Reading Tests 15 



6. Visual Vocabular3\ Showing by half-grades the number of 



children in 14 cities scoring each line 23 



7. Visual Vocabulary. Showing percentage of children in half- 



grades scoring each line in 14 cities 23 



8. Visual Vocabulary. Showing by half-grades the number and 



per cent of seventh grade children of two cities scoring each 

 line 26 



9. Understanding of Sentences. Showing by half-grades the 



number and per cent of seventh grade children of two 

 cities scoring each set 26 



10. Visual Vocabulary. Time for doing the test shown by grades, 



scores, and quartiles 28 



1 1 . Visual Vocabulary. Showing age and score of pupils 30 



12. Visual Vocabulary. Median scores of all pupils accelerated, 



normal, and retarded for grades 4, 6, and 8 33 



13. Visual Vocabulary. Sex differences. Average error per line 34 



14. Coefficient of Correlation for the Vocabulary and Understand- 



ing of Sentence Tests 36 



15. Visual Vocabulary. Per cent of error of 1,145 pupils on each 



word of scale 37 



16. Words of Approximately Equal Value at Three Points on the 



Scale of Difficulty 41 



17. Understanding of Sentences. Per cent of errors in each set 49 



18. To Estimate the Degree of Difficulty at which 20 per cent of 



errors and omissions may be found from any given per- 

 centage of errors and omissions between 8.0 and 40.0 62 



FIGURES 



I. Visual Vocabulary. Median of all children 14 



II. Visual Vocabulary. Medians of 18 cities Facing 14 



III. Understanding of Sentences. Median of all children 15 



IV. Understanding of Sentences. Medians of 18 cities Facing 16 



V. Medians of all Children in Visual Vocabulary and Understand- 

 ing of Sentences 16 



VI. Visual Vocabulary. Overlapping of grades 3 to 8 in 14 cities ... . 21 



VII. Visual Vocabulary. Overlapping of grades 4 and 8 in 1 city 21 



VIII. Understanding of Sentences. Overlapping of grades 3 to 8 in 1 



city 24 



IX, Understanding of Sentences. Overlapping of grades in one city 24 



X. Same Class in Visual Vocabulary and Understanding of Sentences 25 



XI. Visual Vocabulary. Sex differences 33 



