LENA Snapshot development and norms
Development of the LENA Snapshot
To learn more about how the LENA Snapshot was developed, please see the following resources:
- Gilkerson, J., Richards, J. A., Greenwood, C. R., & Montgomery, J. K. (2017). Language assessment in a snap: Monitoring progress up to 36 months. Child Language Teaching and Therapy, 33(2), 99-115. doi: 10.1177/0265659016660599
- LENA technical report - The LENA Developmental Snapshot
LENA Snapshot standard score distribution
LENA Snapshot standard scores are capped at either end. They are normed to have Mean=100 and SD=15.
| Standard Score | Percentile | Standard Deviation |
|---|---|---|
| 64 (minimum) | <1st | -2.4 SD |
| 70 | 2nd | -2 SD |
| 85 | 16th | -1 SD |
| 100 | 50th | Mean |
| 115 | 84th | +1 SD |
| 130 | 98th | +2 SD |
| 136 (maximum) |
>99th | +2.4 SD |