Question

How does language affect intelligence?​

Answer 1

Languages do not limit our ability to perceive the world or to think about the world, but they focus our perception, attention, and thought on specific aspects of the world. So, different languages focus the attention of their speakers on different aspects of the environment—either physical or cultural.

Hope this help you

Answer 2

Language alone is not an indicator of intelligence. ... There are too many variables between different language speaking areas such as culture, education, and health care. I have found this paper which found evidence that quality of education can noticeably affect intelligence test results.