The functions of spaces between words in adult reading of text were investigated in three experiments. Results were consistent with a two-process theory in which filling parafoveal spaces disrupts guidance of the next eye movement and filling foveal spaces disrupts processing of the fixated word as well. (Author/RD)

Good and poor student readers and adults read texts in normal format and with 13 spaces between words. Wide spacing improved comprehension for poor readers but did not affect their reading efficiency, while it substantially impaired the efficiency of the other groups. Text difficulty did not interact significantly with spacing. (SJL)