Children's lives have changed dramatically over the last 50 years.

[ambitious-girl]

Hello,
Happy new year 2018 to all!

Could you please check the following sentences?

Children's lives have changed dramatically over the last 50 years. The question is whether they have happier childhood than we did or not.

Children's lives have changed dramatically over the last 50 years. The question is whether they have less happy childhood than we did or not.

 

[Raymott]

Children's lives have changed dramatically over the last 50 years. The question is whether they have a happier childhood than we did or not.

Children's lives have changed dramatically over the last 50 years. The question is whether they have a less happy childhood than we did or not.

As above.

PS: You can leave out the article if you use "childhoods" (which you can do).

 

[Tarheel]

I would use childhoods there.

 

[teechar]

I would also leave out "or not".

 

[Tdol]

You could also say One question as there may be other important questions given the dramatic changes.