| I. | An Outline of the Experiment | 1 |
| The Use of Quotients and Ratios | ||
| The Derivation of Age Norms | ||
| A Method of Survey of Reading, Language and Arithmetic | ||
| II. | Statistical Treatment of the Experiment | 17 |
| The Quotients | ||
| The Ratios | ||
| Summary | ||
| III. | The Psychological Conclusions of the Experiment | 43 |
| The Neglect of Genius | ||
| Is Genius Specialized? | ||
| Current Psychological Opinion | ||
| Conclusions |