This study dealt with the development of person perception of children and of early adolescents. 278 subjects consisted of eight different grades (1st-8th gredes) were instructed to write about three persons. These descriptions were analyzed by the content analysis (method) which dealt with the following four phases: (a) Calculation of the number of statements appeared in the descriptions, (b) categorization of each statement in either central or peripheral one, (c) picking out the expressed traits of persons and (d) classifying the qualifying (Q.) and organizing (Or.) terms. In (a), (b) and (c) phases, similar types of developments were found. But in (d) some different trends were found: The developments in (a), (b), (c) and (d) phases started at their ages of 7-8 years simultaneously, But the development seen in the first three phases ((a), (b) and (c)) stopped at their ages of 12-14 years, while the development in (d) continued further.