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Violent media content and aggressiveness in adolescents: A negative feedback-loop model
Unformatted Document Text:  A negative feedback-loop model page 7 From a path-analytic standpoint, one can conceptualize such patterns as sets of indirect paths over time. For example, in the present case, aggressive tendencies should predict subsequent use of violent media content, which should in turn predict subsequent aggression. Conversely, use of violent media content starting from the same baseline should predict subsequent aggressiveness, which in turn should predict subsequent use of violent media content. Testing such a model, then, ideally should include at least three waves of data collection. A more rigorous approach to testing media effects on aggressiveness than simply testing predictive paths is to use analyses of cross-lagged relationships (Bentler, 1990). Cross-lagged tests provide controls for baseline scores. Therefore, effects of baseline media use are tested on increase in aggressiveness, controlling for baseline aggressiveness; likewise for the effects of aggressiveness on use of violent media content. Moreover, cross-lagged analyses can be analyzed hierarchically, much like a hierarchical regression. This permits testing the incremental effect of the paths from media content use to aggressiveness after fully controlling for the effects of aggressiveness on media use, substantially increasing the robustness of causal inference. Therefore: Hypothesis 1: There will be a significant effect for paths between aggressiveness and subsequent violent media use, after controlling for baseline scores and other relevant control variables. Hypothesis 2: There will be a significant effect for paths between violent media content use and subsequent aggressiveness, after controlling for the influence of prior aggressiveness on media use, baseline scores, and other control variables.

Authors: Slater, Michael., Swaim, Randall. and Anderson, Lori.
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A negative feedback-loop model page 7
From a path-analytic standpoint, one can conceptualize such patterns as sets of
indirect paths over time. For example, in the present case, aggressive tendencies should
predict subsequent use of violent media content, which should in turn predict subsequent
aggression. Conversely, use of violent media content starting from the same baseline
should predict subsequent aggressiveness, which in turn should predict subsequent use of
violent media content.
Testing such a model, then, ideally should include at least three waves of data
collection. A more rigorous approach to testing media effects on aggressiveness than
simply testing predictive paths is to use analyses of cross-lagged relationships (Bentler,
1990). Cross-lagged tests provide controls for baseline scores. Therefore, effects of
baseline media use are tested on increase in aggressiveness, controlling for baseline
aggressiveness; likewise for the effects of aggressiveness on use of violent media content.
Moreover, cross-lagged analyses can be analyzed hierarchically, much like a hierarchical
regression. This permits testing the incremental effect of the paths from media content
use to aggressiveness after fully controlling for the effects of aggressiveness on media
use, substantially increasing the robustness of causal inference. Therefore:
Hypothesis 1: There will be a significant effect for paths between aggressiveness
and subsequent violent media use, after controlling for baseline scores and other relevant
control variables.
Hypothesis 2: There will be a significant effect for paths between violent media
content use and subsequent aggressiveness, after controlling for the influence of prior
aggressiveness on media use, baseline scores, and other control variables.


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