Listening is regarded as an interactive process involving decoding of information. This study was launched to find out the impact of bottom-up (BU) and top-down (TD)techniques on Iranian lower and upper intermediate learners’ listening comprehension.We selected a total of 120 participants in six intactclasses, three lower intermediate and three upper intermediate. The proficiency level of the groups was further verified and groups at each proficiency levelwere randomly assigned as aBUgroup who were engaged in BUactivities during the pre-listening stage of each lesson throughout the eight-session treatment, aTDgroup who performed TD activities, and a control group (CG)for whom no pre-listening attention focusing activities were used. The One-way and Two-way analysis of variance of the listening post-test scores indicated that the lower-intermediate BU group and the upper-intermediate TD group did significantly better compared to the other groups.The findings suggest thatBU processing activities were more effective atlower intermediatelevelwhile TD processing activities played a more facilitative role for upper intermediateparticipants.The findings support the interaction between proficiency level and information processing techniques and imply a number of pedagogical implications.
