Abstract
Although conceptual metaphor boxes were introduced in Macmillan English Dictionary over a decade ago, the effect of this innovative presentation on the retention of metaphorical collocations remains unclear. To fill this gap, this paper reports on a study involving 70 Chinese EFL learners, who were randomly assigned into three groups. They were exposed to three types of collocation presentation, varying in terms of availability and salience of conceptual metaphor information. The results show that the learners who were exposed to the accessible and salient presentation of metaphor information had the best retention of metaphorical collocations and the shortest lookup time. Two competing theoretical accounts, Involvement Load Hypothesis (ILH) and Cognitive Load Theory (CLT), were compared. It was found that CLT had greater explanatory power in predicting the research results, accounting for why conceptually grouping collocations facilitated the retention of metaphorical collocations.