Table 2.
Correlation matrix for 12 variables and 146 acronyms
| Variable | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Number of letters | −0.24** | −0.24** | 0.44** | n.s. | n.s. | 0.34** | 0.38** | 0.34** | n.s. | −0.30** | −0.25** |
| 2. Number of syllables | - | 0.57** | n.s. | n.s. | n.s. | −0.23* | −0.26** | n.s. | n.s. | n.s. | n.s. |
| 3. Number of phonemes | - | −0.28* | n.s. | n.s. | −0.23** | −0.23* | −0.23** | n.s. | −0.42** | −0.36** | |
| 4. Number of orthographic neighbors | - | n.s. | n.s. | n.s. | 0.18* | n.s. | n.s. | 0.18* | n.s. | ||
| 5. Imageability | - | 0.63** | n.s. | 0.17* | n.s. | −0.57** | n.s. | n.s. | |||
| 6. Rated frequency | - | 0.36** | 0.30** | 0.32** | −0.18* | n.s. | n.s. | ||||
| 7. Printed frequency (Google) | - | 0.89** | 0.92** | n.s. | n.s. | n.s. | |||||
| 8. Printed frequency (Bing) | - | 0.86** | n.s. | n.s. | n.s. | ||||||
| 9. Printed frequency (AltaVista) | - | n.s. | n.s. | n.s. | |||||||
| 10. Age of acquisition | - | n.s. | n.s. | ||||||||
| 11. Bigram frequency | - | 0.61** | |||||||||
| 12. Trigram frequency | - |
A logarithm transformation was applied to number of letters, number of syllables, number of phonemes, rated frequency, all the printed frequency measures (Google, Bing, and AltaVista), and imageability. Number of orthographic neighbors, bigram frequency, and trigram frequency were the logarithm transformation of the original value plus one.
* p < .05
** p < .01