11.   Spicer started reading up on the possible coarsening effects of media violence on young children.

12.   The analyst must be sensitive to possible environmental effects when attempting to provide an adequate explanation for a particular political behavior.

13.   The rising concentration of industry and the possible adverse effects on monopoly power are viewed as the factors of paramount importance.

14.   They used a computer to model the possible effects of global warming.

15.   Uncertain as to the cause the Doctor is even more worried about the possible effects.