In the present research aggressive behavior of hundred female children were studied who
belonged to different socio economic classes. The result shows that there is a difference
between manifestations of aggression in the female children belonging to different socio
economic classes. The data was collected through the Questionnaire technique. The
female children of the age group 11 to 13 years were selected for study. It was
First, the selection of specific population is helpful to a great extent in controlling some
of the interfering variable. Second, it brings homogeneity, which makes the relation of
observations more useful. Thirdly, it helps to increase the validity of generalization.
Fourth, it facilitates sampling. Lahore schools were selected because of the convenience
of the researcher as she has self-lives in Lahore, besides she knew most of the staff
students was studies. The girls selected for study were found understanding in six,
seventh and eight classes. The students in these classes mostly fell under the age group of
11, 12, 13 years.