Dr. Gong has developed a coding system for aggressive behaviors displayed in comic books. She had her assistants read comic books published between 1980 and 1984 and record the number of aggressive acts displayed in each comic. She also had her assistants read comic books published between 1985 and 1989 and record the number of aggressive acts displayed in them. This approach to studying aggressive behavior may best be categorized as . a survey research naturalistic observation a cohort study content analysis

The correct answer is content analysis

Content analysis although most classical content analysis culminates in numerical descriptions of some features of the body of the text, considerable attention is being paid to the types, qualities and distinctions in the text, before any quantification is made. Content analysis traditionally works with written textual materials. There are two types of texts: texts that are constructed in the research process, such as interview transcripts and observation protocols; texts that have already been produced for any other purpose, such as newspapers or corporate memos. In content analysis, the starting point is the message, but the contextual conditions of its producers must be considered and it is based on the critical and dynamic conception of language. It must be considered, not only the semantics of the language, but also the interpretation of the meaning that an individual attributes to the messages. The analysis of the content, in its first uses, is very similar to the process of categorization and tabulation of answers to open questions.

the boundarys like convergent divergent and transform it causes subduction