Which of the following is not a feature of Mass-Media education -

Mass media alone are generally inadequate in changing human behavior.For effective health communication,they should be used in combination with other methods.The power of mass media in creating a political will in our of health,raising the health consciousness of the people,setting norms,delivering technical messages,popularising health knowledge and fostering community involvement are well recognized (refer pgno:866 park 23 rd edition)