<P> There are many different theories related to human development . Human ecology theory emphasizes environmental factors as central to development . </P> <P> Children who depend on technology for play and entertainment grossly limit their creativity and imagination as well as optimal growth of their sensory motor skills . Sedentary bodies bombarded with chaotic sensory stimulation are resulting in delays in attaining developmental milestones, with subsequent impact on basic foundation skills for achieving literacy (3, 4), causing France to ban all "Baby TV" (5). Violent content found in media has had such an impact on child aggression that the United States has classified media violence as a public health risk (6, 7). Students entering schools struggle with discipline and attention skills required for optimal learning . Thus causing major behaviour management problems for teachers in the classroom . </P> <P> Thus technological advancements has indirectly contributed to physical, psychological and behavioral disorders thereby directly interfering with the microsystem as suggested by Bronfenbrenner's framework . </P> <P> The three critical factors for healthy, physical and psychological development of a child are movement, touch and connection with other human beings . They are essential sensory inputs that are of utmost importance for a child's development of his motor and attachment systems, deprivation of which causes devastating consequences . Children thus fails to connect with the exo and macrosystems of Bronfenbrenner's structure thereby being deprived of friends, family, neighbours and attitudes / ideologies of the culture within . </P>

Who wrote the book ecology and health a system approach