Displacement Theory

In response to the lecture on the displacement theory, I have come across some related information. Moreover, one of the stipulations stated that there was a cut-off where media use will begin to displace other useful activities. This is called the thresh hold effect. Its states that onces a viewer goes beyond ten hours per week of viewing media content, the dispalcement theory can then be applied. Only after ten hours or more will other useful activities be displaced. After ten hours, media use is no longer considered to be a substitute for down time. However, it seems that this measure was randomly assigned. More directly, even two hours of vieweing media content can and will displace other activities. They go further to describe what qualifies as a useful activity, yet even thinking or meditation is useful. The stipulations of this theory seem very objective.