In pricing theory, the scarcity principle suggests that the price for a scarce good should rise until an equilibrium is reached between supply and demand. However, this would result in the restricted exclusion of the good only to those who can afford it.
Children aged between three and seven should be limited to half-an-hour to an hour of screen time each day, he said. Those aged seven to 12 should spend just one hour in front of screens. Children aged 12 to 15 should have a maximum of 1.5 hours in front of screens and those aged 16 and over should spend just two hours, he recommends. ''Reducing total daily screen time for children, and delaying the age at which they start, could provide significant advantages for their health and wellbeing,'' he writes.
In 2009, the Nielsen Co. reported that childrenâs television viewing had reached an eight-year high. Children ages 2 to 5 watched TV for more than 32 hours a week. Kids ages 6 to 8 spent 28 hours per week in front of the tube, most likely because they were in school, explains Nielsen. The Kaiser Family Foundation also conducted research on the media habits of children ages 8 to 18. Kaiser found that on average, this age group spends 4Â½ hours each day watching TV in various forms, including on their mobile phones and the Internet.