The following is based on Fallout Shelter and some details might contradict canon. vault's overall happiness (Which affects the vaults efficiency boost) will be.
There might be other structures which will increase happiness. If you want a dweller to get happier, put him/her in a living quarters with a.
From what I can tell, a successful rush will increase happiness 10%, but it takes time to get to %. everyone in my vault except new people.
For the metric within Fallout 4, see Happiness. Assign the dwellers to jobs they' re most suited for, as determined by their SPECIAL stats.
However, my vault's average happiness as a whole has declined (while I guess I'll try making it better and upgrading it to see if that will work.
How to Raise Vault Dweller Happiness in Fallout Shelter. In general, the happiness will slowly increase provided you have a vault that is in good condition .
Sometimes your Dwellers just refuse to be happy in Fallout Shelter, despite all you do for them as Overseer. Here are some tips on how to.
Fallout Shelter at IGN: walkthroughs, items, maps, video tips, and on what room you put your dwellers, it can increase their happiness.
Please also check out our complete walkthrough for Fallout Shelter if you have the dweller's in Living Quarters without job will increase their happiness rating.