The purpose of this study is to investigate the possibility that the handwriting analysis of a particular group of individuals with homogeneous interests and abilities (mathematics majors, music majors, psychology majors, and education majors) could likewise identify and isolate a particular personality variable common to these individuals.

Thesis discusses the design of expression, especially the handwriting, and it is obvious by comparing the behavior of people during adolescence. The central part of the theoretical work has been devoted to the possible use of handwriting for diagnostic purposes, particularly to describe the behavior of writer, taking into account the specificities of adolescence. Practical work examines the extent to which it is possible to compare the written manifestation adolescent with his behavior and simultaneously testing the value of writing of juvenile personalities. To illustrate examples of work are part of the several handwritings.