Finally, Stoodt (1972, as cited in Innajih, 2007), found a significant relationship between reading comprehension and the comprehension of discourse markers. In discourse comprehension, the ESP students may be faced with the texts, which contain cohesive relationships, and their lack of knowledge about cohesive ties may hinder their interpretation and comprehension of the text. As we observed in literature, the emphasis in reading discussions was mostly on the linguistic side of the phenomena on the one hand, and mental process on the other.