Bronfenbrenner's (1979) ecological model proposes that events in higher order social ecosystems should influence human development through their impact on events in lower order social ecosystems. This proposition was tested with respect to ecological violence and the development of children's aggression via analyses of 3 waves of data (1 wave…

Results indicate that there is no simple relationship between type of observer present and children's aggressive responding following exposure to an aggressive model. (Authors)

Describes procedures for identifying stimuli in the natural environment whose presence was associated with altered probabilities for both the initiation and persistence of noxious responses. (Author/SDH)

Major Purpose of the study was to investigate the extent to which aggressive retaliation in boys at three age levels is influenced by two dimensions of hypothetical provocation: accidental versus intentional and verbal versus physical. (Authors/CB)

Prediction was not supported that responses followed by positive or negative social consequences would immediately be repeated or changed, respectively. (Author/MB)

Study is an initial effort at determining the sequence and developmental level at which children first use a variety of situational variables in making decisions concerning the appropriateness of various types of aggressive responses. (Authors)