Abstract
Words learned earlier in life are processed faster than words learned later in life. In Chinese, the age of acquisition (AoA) effect has been extensively studied in one-character words, yet no studies have explored this effect in compound words. Given that compound words are a widespread word type and are processed differently than one-character words, it is unclear how AoA affects compound word processing. The present study examined the role of multiple variables in the processing of Chinese two-character compound words based on a database of eye-movement measures. We focused on the AoA effect from the whole compound word and the first and second characters. We found that whole-word AoA and first-character AoA have an early and long-lasting influence, with no AoA effect from the second character. The results indicated that two-character compound words are accessed via the character and whole word simultaneously. These findings are discussed with respect to theories of the AoA effect.
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Data availability
The materials, data, and analysis scripts are available through the Open Science Framework (https://osf.io/6vn43/). None of the experiments were preregistered.
Notes
We selected 2143 Chinese two-character words as target words, including 2143 first characters and 2143 second characters. Among the 4286 characters, AoA data for 3960 characters were extracted from Liu et al. (2007), and AoA data for the remaining 326 characters were collected in the present study. Among the 326 characters, 64 are unique and the rest are overlapping.
We invited eighteen participants to rate the AoA of the 64 Chinese characters, with instructions and procedures similar to those of Liu et al. (2007). We found that AoA significantly correlated with word frequency (r = -.02) and the number of strokes (r =.70). These results indicated that the L1 AoA data collected in the present study were valid. The specific AoA data and the corresponding source of each Chinese character can be found in the Materials section (https://osf.io/6vn43/).
We have a total of 177407 observations, of which 169067 (95%) observations have word frequency values of the pretarget words. The remaining 8340 observations had no word frequency values because the pretarget word may be a person’s name or a punctuation mark. We used median interpolation to address the missing data. The word frequencies of pretarget words are presented in the Material Section (https://osf.io/6vn43/).
We noted that there was an inverted character frequency effect, that is, compounds with higher frequency first characters were processed slower than compounds with lower frequency first characters. This finding bears resemblance to analogous findings observed by Cui et al. (2013, 2021), Tsang et al. (2018) and Yu et al. (2019). For example, when reading Chinese two-character compound words, Cui et al. (2021) found that having a frequent than an infrequent first character resulted in longer fixation times. Although this finding might look surprising initially, it became more sensible when we considered morphological family size (Cui et al., 2013, 2021; Hyönä et al., 2004). Specifically, the low frequency first character could form a low number of words and provide a high constraint over the second character compared to the high frequency first character. Consequently, the frequency of the first character influenced the processing of the second character and the whole compound word, with longer fixation durations for high frequency first character than low frequency first character.
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Acknowledgments
We thank the editor, Marc Brysbaert, and Barbara J. Juhasz for the helpful and constructive comments. We thank Xingshan Li and Guangyao Zhang for their help in using of the eye-movement database.
Funding
This work was supported by the Major Project of the National Social Science Foundation of China (17ZDA305), the Discipline Team Support Program of Beijing Language and Culture University (2023YGF07), the Project of School of Psychology at Beijing Language and Culture University (supported by “the Fundamental Research Funds for the Central Universities”) (19YJ130004), and the Project of the Construction of the Advanced Disciplines in Universities in Beijing to Xin Jiang; and the Science Foundation of Beijing Language and Culture University (supported by “the Fundamental Research Funds for the Central Universities”) (21YBB27) to Jue Wang.
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Wang, J., Chen, B. & Jiang, X. Age of acquisition effects in Chinese two-character compound words: a megastudy of eye movements during reading. Psychon Bull Rev 31, 166–175 (2024). https://doi.org/10.3758/s13423-023-02329-8
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DOI: https://doi.org/10.3758/s13423-023-02329-8