[jsanders2001]

Hard times = increased belief in God; spirituality increases; intellectualism decreases
Easy times = decreased belief in God; intellectualism increases; spirituality decreases

That’s what I’ve noticed anyway.

[jsanders2001]

Hard times = increased belief in God; spirituality increases; intellectualism and materialism decreases
Easy times = decreased belief in God; intellectualism and materialism increases; spirituality decreases

That’s what I’ve noticed anyway (forgot to add in materialism in prior post)

[Kip Russell]

I'm not sure there's a strong correlation between economic prosperity and belief in God; here's a chart showing religious affiliation in the UK over the last 30 years:

It appears to be a fairly steady decline in those who identify themselves as "Christian".