"Creativity in thinking" can be very good, or very bad. If you're talking about increasing cognative ability, I'd word it as "Increase the ability to make correct connections and sound rationalization."

Some of the people here have seen some of my particularly "creative" connections between otherwise unrelated ideas/topics/etc ... however, that doesn't make any of those connections more corrector better. I could say "I think more creatively after a half-dozen jack-and-cokes"; which is particularly true ... but that doesn't mean my decision making has become better--in fact, it's quite the opposite.

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I'm like one of those idiot savants...well, except for the savant part.
"In order to increase awareness of the homeless, security have been given binoculars."