My experience is that a lot of schools do take people straight out of undergrad as most of the grad students I contacted when I went through the application cycle last year were 1st years out of undergrad. That said, the most important thing for grad school is research interests/experience/fit. Do your research interests align well with a professor in the program? Even if your focusing mauinly on going applied after graduation, this will still be a large factor, especially if the school offers assistantships. Also, having research experience (doesn't really matter in what field) is always a plus.