Abstract—The part of “future direction” in the findings of meta- analysis could provide the great direction to conduct the future studies. This study, “The Documentary Analysis of Meta-Analysis Research in Violence of Media” would conclude “future directions” out of 10 meta-analysis papers. The purposes of this research are to find an appropriate research design or an appropriate methodology for the future research related to the topic, “violence of media”. Further research needs to explore by longitudinal and experimental design, and also needs to have a careful consideration about age effects, time spent effects, enjoyment effects and ordinary lifestyle of each media consumer. Keywords—Aggressive, future direction, meta-analysis, media, violence. I. INTRODUCTION IOLENCE of media is one of most influential topics in worldwide research. Its various variables were often investigated by quantitative methods, which yield to meta- analysis studying. Meta-analysis allows the researchers to compare and digest the results of the same topic [1], [2]. Normally, the methodologically strong study would cause a high effect size [3]. Since meta-analysis could provide the summarization and integration of the past findings [2], Anderson [3] stated that future research can benefit by the identification of problems uncovered by past work. The aggression in television and films viewers had been the controversial topic since this topic was explored in two classic studies which are Imitation of film-mediated aggressive models, and Effects of film violence on inhibitions against subsequent aggression in 1963 [4]. After the birth of television, other communication technology and media were created, and now they seem like a non-stop trip of train with a high competition between many brands. The violence of media will be continuously studied. The themes of research would vary depending on the trends of communication technology and popular media in each period. Meta-analysis could also help to reduce the time spent on literature reviews of the future research. If a researcher had a limit amount of time, meta-analysis research would offer wider and more accurate results comparing with an individual quantitative study. This study is the documentary analysis about the findings of meta-analysis papers in the area of media violence. The results of this study could direct the way to choose issues for future Proud Arunrangsiwed is with Suan Sunandha Rajabhat University, Bangkok, Thailand. She is an instructor in Communication Arts program, faculty of Management Science (phone: 66-87-931-2327; e-mail: proud.ar@ssru.ac.th; parunran@nyit.edu). studies. For example, Anderson [3] found the small numbers of longitudinal studies in the research papers about violent video game. This would lead future research to examine the topic with longitudinal studies. II. CONCERNMENT ON MEDIA Media were considered as aggressive behaviors activator in period of "Information Era," defined by Toffler [5], [6]. Internet is one of information technology, and it has been commonly used since late 2000s. The influence of online media was increased on both business and individual person [7]. The online information was not filtered or proved [8]. Everyone could be the message sender, even to create one own variety show and upload it on Youtube [8]. To classify the online information becomes the main task that the online users should do [8], [9]. The function or platform of technology itself could also harm its users. For the educational media, animation-based learning might overload the memory and the process of thinking of the students [10]. The online class and online learning activities also cause the lack of interaction between students and teachers, and also between the classmates [11]. Moreover, technology addiction [6] in students affects their short-term concentration in class, [12] which could be the primary cause of lower grade in students who used social networking sites [13]. Outside the area of education, in 2006, the effect of hate symbols on website was studied. This study mentioned about a group of users who expressed their unsatisfied emotion on website [14]. A good practice of message transferring is the way to make the receiver understand the message clearly [8]. However, business and individual person never say or write everything they know, but they will choose only parts of message which could benefit them [9]. Especially for the business organizations, they need to impress their customers or their audiences [15]. The show needs to engage the audiences, since the high numbers of audiences bring the sponsors, and the high numbers of sponsors would concretely show the achievement among the rival organizations. The marketing system did not cause only the competition between the organizations, but also cause the conflict within the family [6]. The financial goal of the mass media organizations might disregard the morality, so codes of ethics were written to lead them to work or perform in the right direction. This type of organizations needs to cooperate with its customers, its audiences and also the government to conduct a moral and appropriate media, especially on radio and television [16]. The laws also included the codes to control the reliability of Proud Arunrangsiwed The Documentary Analysis of Meta-Analysis Research in Violence of Media V World Academy of Science, Engineering and Technology International Journal of Humanities and Social Sciences Vol:8, No:1, 2014 77 International Scholarly and Scientific Research & Innovation 8(1) 2014 scholar.waset.org/1307-6892/9997124 International Science Index, Humanities and Social Sciences Vol:8, No:1, 2014 waset.org/Publication/9997124