How can I increase my Vault Dweller's Happiness?

All my vault dwellers look really unhappy and bummed out and aside from making babies I'm not sure how to make them happier.
Am I missing something really obvious?
Best Answer
Another point about happiness is that the dancing action (not something you directly control) in the Living Quarters also increases happiness. If you want a dweller to get happier, put him/her in a living quarters with a dweller of the opposite sex, and wait until they start dancing. If you don't want a baby, you can just reallocate one/both of them to another room before the magic happens. That should increase their happiness dramatically.
I've yet to see radio stations (even for a dweller with high Charisma) get happy from using the station, but perhaps I haven't waited long enough.
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How do you raise the happiness of a dweller?
If you want a dweller to get happier, put him/her in a living quarters with a dweller of the opposite sex, and wait until they start dancing. If you don't want a baby, you can just reallocate one/both of them to another room before the magic happens. That should increase their happiness dramatically.What happens when a dwellers happiness hits 0?
Fallout Shelter Even if you get your entire vault down to 0 happiness, you still get 20 caps a day, and a lunchbox after the whole week.How do you attract people to your vault?
Start broadcasting with the Radio Studio. It makes sense; no one out in the Wasteland knows your Vault is there unless you tell them. The Radio Studio costs 600 Caps to build and will give you a countdown timer to let you know the next time it might attract a Dweller to your door.Why are my vault dwellers getting radiation?
Whenever your vault is attacked by the rad roaches your dwellers take the radiation damage. The red section on your dweller's health bar is the radiation damage taken by the dweller. The more the damage higher the red will appear on the dwellers health bar. Sometimes due to lack of water the radiation damage increases.Fallout Shelter | How to Get more Dwellers
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