Your question on measuring happiness reminded me of this scene from the TV show Frasier (series 1, final episode):

Niles: So, Frasier, now that chapter two of your life is in full swing, do you mind if I ask you something?
Frasier: No, go right ahead.
Niles: Are you happy?
Frasier thinks.
Niles: Did you hear the question?
Frasier: Yes, I’m thinking. It’s a seemingly complex question.
Niles: No, it’s not.
Frasier: Yes, it is.
Niles: No, it’s not. Either you’re happy or you’re not.
Frasier: Are you happy?
Niles: No, but we’re not talking about me.

Anyway, I think the empirical method they used was get participants to carry a personal data assistant (PDA) for a few days. It beeps a few times randomly a few times a day. When this happens, the participant marks on the PDA on a 7 point scale from one end “very unhappy” to “very happy”. This tends to get people to measure their happiness when actually living their lives instead of sitting in a lab.

You asked “What if we were unable to communicate our senses of approval or aprobation?” Unless there is a way of determining happiness in a participant using brain scan or hormone levels, this would not be measurable. This is therefore outside the scope of empirical investigation until we figure out a way to measure it. It is an interesting philosophical question which I am not going to initiate until I have some interesting ideas – but you can if you want. :)

The formula H=S+C+V, I think, is trying to state the following ideas:
There are various (generally) independent factors that contribute to happiness. Of course there are changes to our conditions of living (C) that we respond to in our voluntary actions (V) so admittedly they are not completely independent.
Most contributing factors to happiness are outside our control (S and C)
Since most external factors in our life conditions (C) get normalized in the long term (we eventually get used to most things), they do not give long term happiness/unhappiness. They tend to zero contribution. (Note: there is nothing wrong with short term happiness! It’s just short!) The Happiness Hypothesis does list some factors that are not normalised by time.
Our set point (S), which is “hard wired” in our body/mind is more or less constant.

For more information check out this Discover magazine article.

Anti Citizen One