Future directions and conclusion
The focus of this chapter is future directions for vocabulary in ESP and it is framed around five main avenues for future research into vocabulary and ESP. The first avenue of research is the need for more qualitative studies and what they might bring to the field of vocabulary in ESP. The second is the need for more testing research, because this is a major gap in the field. The third is a push for theorising vocabulary studies overall and ESP lexical acquisition in particular. The fourth avenue is the need for comprehensive evaluations of research and replication in the field of vocabulary and ESP. The chapter ends with the final avenue for research, which calls for more work in particular in spoken, professional and multi-word unit vocabulary. Note that Chapter 8 contains a section for trends-based vocabulary research.