London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
London County Council 1933
[Report of the Medical Officer of Health for London County Council]
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| Age. | Retardation. | |||||||
|---|---|---|---|---|---|---|---|---|
| Testing to age. | 1 year. | 2 years. | 3 years. | 4 years. | 5 years. | 6 years. | 7 years. | |
| 14 or over | 155 | 53 | 66 | 31 | 32 | 1 | ||
| 13 to 14 | 81 | 35 | 29 | 30 | 3 | — | ||
| 12 to 13 | 75 | 36 | 48 | 11 | 3 | 1 | 1 | — |
| 11 to 12 | 48 | 52 | 19 | — | — | |||
| 10 to 11 | 68 | 23 | 10 | 6 | 1 | — | — | — |
| 9 to 10 | 33 | 19 | — | — | — | — | — | |
| 15 | 6 | 1 | — | — | — | — | ||
| 7 to 8 | 13 | — | — | — | — | — | ||
| 6 to 7 | 2 | 1 | — | — | — | — | — | — |
| 5 to 6 | 2 | 2 | — | — | — | — | — | — |
| Under 5 | 1 | — | — | — | — | — | — | |
| Percentage | 471 | 21.9 | 16.9 | 7.9 | 3.9 | 1.5 | .1 | |
| „ 1932 | 29.5 | 22.8 | 23.5 | 6.6 | 3.2 | 1.9 | — | |
Mental age (psychologist's figures, November and December).—229 cases.
| Age. | Testing to age. | 1 year. | 2 years. | 3 years. | 4 years. | 5 years. | 6 years. | 7 years. |
|---|---|---|---|---|---|---|---|---|
| 14 or over | 43 | 14 | 22 | 20 | 12 | 6 | 2 | 2 |
| 13 to 14 | 18 | 8 | 2 | 1 | — | — | — | |
| 12 to 13 | 10 | 2 | 3 | 1 | — | — | — | |
| 11 to 12 | 2 | 4 | 4 | 2 | — | — | — | — |
| 10 to 11 | 15 | 5 | 1 | — | — | — | — | — |
| 9 to 10 | 12 | — | — | — | — | — | — | — |
| 8 to 9 | 2 | — | — | — | — | — | — | — |
| 7 to 8 | — | — | — | — | — | — | — | — |
| 6 to 7 | — | — | — | — | — | — | — | — |
| 5 to 6 | — | — | — | — | — | — | — | — |
| Under 5 | — | — | — | — | — | — | — | — |
| Percentage | 44.5 | 16.2 | 14.4 | 6.1 | 2.6 | .9 | .9 |
| Age. | Testing to age. | 1 year retarded. | 2 years. | 3 years. | 4 years. | 5 years. | 6 years. | 7 years. |
|---|---|---|---|---|---|---|---|---|
| 14 and over | 205 | 63 | 50 | 53 | 46 | 18 | 11 | 27 |
| 13 to 14 | 93 | 46 | 27 | 29 | 10 | 6 | 7 | 5 |
| 12 to 13 | 100 | 29 | 26 | 22 | 13 | 5 | 3 | 1 |
| 11 to 12 | 63 | 32 | 12 | 15 | 9 | 3 | 2 | 3 |
| 10 to 11 | 80 | 17 | 9 | 12 | 4 | 3 | 4 | — |
| 9 to 10 | 28 | 7 | 13 | 7 | 6 | 5 | — | — |
| 8 to 9 | 8 | 7 | 2 | 4 | 4 | 1 | — | — |
| 7 to 8 | 3 | 5 | 2 | 8 | — | — | — | — |
| 6 to 7 | 1 | — | — | — | — | — | — | — |
| 5 to 6 | 2 | 2 | — | — | — | — | — | — |
| Under 5 | 6 | — | — | — | — | — | — | — |
| Percentage | 45.8 | 16.2 | 11.0 | 11.7 | 7.2 | 3.2 | 2.1 | 2.8 |
| ., 1932 | 34.9 | 19.6 | 15.1 | 11.8 | 6.8 | 4.4 | 7.4 | — |