the effects monitored to understand how it affects their lives.

Let me save you some time: they will simply spend all the money on crap to make them more comfortable. However, because it's only 30 people, you will miss out on the exciting effects of an enormous shot of currency flooding the economy, which will cause inflation to accelerate because now there is a lot more of it. Thus, the real effect will be to put the population back into the same position they were in before you started the program. The exciting thing is you can never end this program because you are distorting the economy permanently. In fact, you will be required to continuously make the program larger and larger until the economy collapses under its own weight. I believe this is a feature though.

Best way to save a sinking ship is to douse it with gasoline and light a match…. Clearly.

UBI makes a population dependent. Once they add a mandatory work requirement to continue to receive it, it is slavery.

Wasn't there a song like that?

"Money for nuthin' and Niggs for free..."