401K Allocation Question

I've got a relatively new 401k with my current employer, and I'm kind of hesitant with regard to how I should allocate my investments (not that we're talking about huge sums of money here).

I've been reading a book that was given to me by a CPA acquaintance of mine, Ric Edelman's The Truth About Money, and he suggests that it is best to lean heavily to the most volatile option (in terms of StdDev) due to the effect of dollar-cost averaging. I've kept everything in a more general long-term growth model instead of any specific fund option. What is your general opinion on StdDev volatility in 401k selections?