CNET, has written an interesting piece about the appeal of Nintendo DS to females. Girls seem to love Nintendo's handheld, and they help make a large portion of Nintendo's current audience. For example, one CNET editor's girlfriend "liked the concept of the touch screen ... She thought it was more interactive than what you had with the PSP."
Certainly, women can enjoy PSP (see picture), but it's clear that PSP is largely targeted towards males. But is that really a problem? As Carnoy points out, focusing on this demographic has created a large library of games that can entertain an audience that simply won't be satisfied by the DS's numerous casual games: "Fact is, the number of really good titles for the DS is actually pretty thin, especially if you happen to be over 21 and don't worship at the altar of Mario or Pokemon. If you're looking to play more 'adult' games with any sort of backbone, the PSP is a far better choice with a much stronger game library."
Like almost every other analyst out there, Carnoy believes that PSP can better attract a wider audience with a redesigned handheld. The problem appears to be Sony's reluctance: "I wouldn't be surprised if I saw the DS Extra Lite before I saw the next iteration of the PSP."