People who live in isolated, scientifically unsophisticated societies and who have little formal education are less likely to perform at the formal operational level than formally educated persons living in more technologically sophisticated societies. this is an example of influences on the formal operations of adolescents.

Cultural

Explanation:

Culture refers to the way of life of a particular group of people or a society.

The Adolescents grew up in a Culture that was not very scientifically sophisticated. This led to them having less formal education than their peers in more scientifically advanced countries.

We cannot therefore expect them to perform in the same league as those who have had formal education on a formally operational level.