author(s)
Padma Priya D, Nandhini V and Sebastin Inigo A

abstract
The present aim was to assess the effectiveness of behavioural change communication on pubertal changes and menarche among preadolescent girls. A quantitative approach with one group pre testpost test designwas used for the present study. 60 preadolescent girls were selected by using convenient sampling technique. Self-structured questionnaire method was used to collect both the demographic data and the level of knowledge on pubertal changes and menarche among pre-adolescent girls. Among 60 study participants, mean score of existing level of knowledge among preadolescent girls was that the post-test mean (16.2) was higher than pre-test mean (5.2). The standard deviation for pre-test is 2.8 and for post-test is 1.4. The study concluded that there is significant difference in mean post-test knowledge score and mean pre-test knowledge score regarding menarche (t=25.974).. This study proves that effectiveness of behavioural change communication on pubertal changes and menarche among the preadolescent girls is effective method. And also it helps the preadolescent girls to improve to the knowledge and to provide the better quality of life.