This quasi-experimental research study tried to explore the effects of integrated vocabulary instruction on the reading comprehension performance of A1 EFL learners in a public school in Ecuador. A group of students participated in eight reading lessons with different vocabulary instruction (traditional and integrated), after the reading sessions they took part in a reading comprehension test based on literal comprehension questions. The vocabulary knowledge was measured before the reading sessions, then, a post-test and post-delayed test measured the retention of the words learned in class....