Table 3.
Stimuli characteristics by frequency used in the picture naming task.
| Variable | Low Frequency | High Frequency | p-value |
|---|---|---|---|
| Freq1 subtlex | 247 (123) | 5477 (6537) | p < .001 |
| Freq2 CELEX | 2.0 (0.8) | 4.3 (1.1) | p < .001 |
| AoA | 5.3 (1.2) | 4.5 (1.1) | p < .001 |
| Syllables | 1.6 (0.7) | 1.5 (0.6) | p = .35 |
| Letters | 5.4 (1.7) | 5.1 (1.2) | p = .19 |
| Name agreement | 0.9 (0.1) | 0.9 (0.1) | p = .60 |
| Visual complexity | 16048 (7144) | 18083 (9640) | p = .17 |
| Imageability (100–700) | 589 (32) | 596 (34) | p = .25 |
| Number of phonemes | 4.3 (1.4) | 4.0 (1.1) | p = .15 |
| Initial phoneme (1=Plosive/2=Non-plosive) | 1.6 (.5) | 1.6 (.5) | p = .38 |
Note. Freq1 subtlex: The frequency of the word as noun in Brysbaert and New (2009); Brysbaert et al. (2012).
Freq2 CELEX: Natural logarithm of the Celex frequency, as reported in the original IPNP database.
AoA: Age-of-acquisition ratings in Kuperman, Stadthagen-Gonzalez, and Brysbaert (2012).
Name Agreement: Percent name agreement, as reported in the original IPNP database.
Visual Complexity: Estimates of objective visual complexity, as reported in the original IPNP database.
Imageability Rating: As reported in the MRC Psycholinguistic Database.