Shyness is everywhere, although humans manifest it in a different way. In a society where communication is necessary, to be a shy person can be a huge difficulty. Shyness is a problem often met and it can have a great impact over those who have it. As it is a personality trait it is a complex and contradictive phenomenon. We became curious about this subject. That is why in this article we would like to present the results of the research made on a sample of 60 adolescents with the age between 17-18 years old. The high correlations of the variables studied at the adolescents who participated in the research shows that a high level of shyness is caused by a high emotional level, a low level of sociability, an inferiority complex that is caused by low level of self-esteem and self-mistrust.