Your average person? Yes they are becoming less and less intelligent. Blame the Drugs or any other social issue all I know is that if we don't reverse the trend humanity is doomed.

Yes, but I don't think it's because the lack of natural selection, but rather the fact that we're breeding ourselves to be more stupid. Uneducated people on average marry earlier and have more kids, so their population grows much more rapidly than the educated population. A more interesting question would be: what should we as a society do in order to reverse this trend, if anything at all?

the stupider people are the easier it is to control them

Yeah, no doubt. For a while the trend will be masked by higher standards of living and then the IQ tests themselves will become easier, but after that?

The only thing I can think of to prevent this is to keep those with less... cognitive abilities to only a single child and massive incentives for those in the opposite camp to have three or more. Like, otherwise they would have taxes that would make the french president proud. Better than giving away money with this economy :P

on a genetic level intelligence is distributed very evenly among humans - we don't become more stupid from people that are phenotypically stupid reproducing faster, as they usually have the same genetic preposition as "intelligent" people, but they just lack the effort/upbringing/circumstances to bring that out in them

there are individuals with genetic defects/mutations/alterations that have a lower genetical base level of intelligence, but these people can very well have more intelligent offspring even if two of them are having children

I don't understand the question.

I like that answer.