ملخص الدراسة

The aim of this study  was to investigate  the impact  of  debate strategy  on developing English vocabulary  and decision making of French  department students at Al-Arish faculty of education .  The design of  the study  was a one  group  pre – posttest  quasi  experimental design. Thirty   of   third  – year  French  university students  were selected  to be the experimental group of the study.  This experimental  group  was tested  using  pre – post  vocabulary   test and decision making scale   before and after being exposed  to debate activities  treatment .The experiment lasted for two  months  during the first term  of 2017-2018  academic year . Paired – samples  of t – test revealed  significant differences  between the pre test  and post test of  vocabulary  test and the scale of decision making . It was concluded that  using debate strategy   to university students  was effective on developing  their vocabulary and  decision making .