Reading spaced and unspaced Korean text: Evidence from eye-tracking during reading

In written Korean, spaces appear between phrasal units ("eojeols"). In Experiment 1, participants read sentences in which space information had been manipulated. Results indicated that removing spaces or replacing them with a symbol hindered reading, but this effect was not as disruptive as previously found in English. Experiment 2 presented sentences varying in the proportion of eojeols that ended with postpositional particles as well as the presence/absence of spaces. Results showed that space removal interfered with reading, but its effects were weaker when the sentence contained more postpositional particles. This suggests that postpositional particles provide an extra cue to word segmentation in Korean texts. These findings are discussed in relation to the unique characteristics of the Korean writing system and to the models of eye-movement control during reading in different languages.