Students’ interest in improving their repertoire of vocabulary and the habit of reading for pleasure and
profit seems to have reached a nadir in the current era of social media. As a consequence, students tend to display
noticeable inadequacy of comprehension and communication. Several research projects have been carried out to
find out suitable methods to enrich and enhance the vocabulary repertoire. The researchers have attempted the
present study to find out whether using complex passages and different instructional methods to teach vocabulary
enhances learning and internalization of the target vocabulary. Jigsaw, a student-centered method of instruction
and the traditional method of instruction were adopted for both the groups and the design followed was repeated
measures. The paired t test of the data collected shows invariably the unavailing nature of both methods of
instruction and complex input on students’ vocabulary. This research work concludes that teaching methods tend
to have insignificant impact on vocabulary enhancement when complex input passages are chosen.