I have attended several trainings on CMMI processes. Some conducted by CMMI experts. One thing I notice is that the entire training is based on the assumption that the model is effective.
...of course...why else would anyone attend?
Just because that assumption is made...does not mean that it IS effective.
...and it also does not mean that it is ineffective either.
But my question is, how one can prove scientifically in an initial adhoc stage of a company that CMMI process is really effective.
How can you prove the effectiveness of something not done yet? You can't.
You can guide people to believe it, or fail to guide them to believe it. Proof needs data you don't have yet.
There are countries & customs where processes and discipline is an integral part of life. What I have experienced is a chaotic place where indiscipline is persistent everywhere and there’s lack of management commitment to Quality.
...sounds like you need to start with Management. If they haven't drunk the Kool-aid, why would anyone else?
So was the intention of the post to seek views on possible ways to prove process effectiveness. If it’s in place, like a verdict, it becomes binding on everyone, more specifically the top management and they can't then run away from it.
Sounds like a place I have no interest in working for. And a place Top management wouldn't want to work. What do you think the chances are of binding Top Management to something without escape? .... especially when you need their OK to move forward?
I've assumed from your command of written english that you are in the USA or similar.
If so...you are following a dictatorial process that is counter-cultural to the extreme. You may (will) want to change your approach.
People can always run away...they may run straight out the door.
Top management doesn't need to run away...they can send YOU out the door.
What is it you are trying to achieve with all of this?
I'm getting the feeling that you want to match the company to the courses you've taken, whether or not it makes everyone miserable or not. It doesn't sound healthy...