5 Conclusions
IELTS and TOEFL iBT’s results are frequently referred to as reliable and valid
indicators of their candidates’ proficiency in English. These two high-stake exams
are considered as the yardsticks in the field of testing and the predictive validity of
many other tests is evaluated by comparing their results to those of IELTS or TOEFL
iBT. Given the central role these two exams play, both in determining people’s future
life and granting credit to other developed test all over the world, investigating the
relationship between these two exams and candidates’ obtained scores on their
different modules seemed to be of great importance. Items measuring a particular
skill can meet the criteria to examine an intended construct. High-stake tests are more
critical in measuring the intended construct they have claimed.