Here is a remedy to increase analytical capability. I posted a remedy for increasing general memory earlier. You can read that post here.
Analytical capability is the ability to compare, evaluate one thing with another on the basis of its existence. The remedy to increase the analytical memory or capability is quite easy and here it is :
Offer a little milk in an earthen pot (Kulhad) at a temple (or religious place) for 13 days regularly. If you miss it for a day in between, start again. The best time to do this remedy is between 6 AM to 7 AM.