Well, from a Biblical prespective, the Fruits of the Spirit are listed in Galatians 5:
22But the fruit of the Spirit is love, joy, peace, forbearance, kindness, goodness, faithfulness, 23 gentleness and self-control. Against such things there is no law.
We can't look at someone and tell if they're saved, but we can see if they have the Fruit of the Spirit. That's about as close as we can get.
Now, it can stated that if we're Christians then we follow Christ as our perfect example of a human, and Christ most certainly studied the scriptures. Every day? I have no idea obviously, but seeing as how he is the Word made flesh, the fact that He even took time to read them, speaks enormously.
I'm a Baptist and my Pastor constantly tells us to read the Word. How do you know what you believe if you don't read the Word? Its not a condition of Salvation, if that's what you're asking (you can most certainly be saved without knowing how to read), so hopefully this answers your question.