A new study suggests that attitude rather than availability may be the key reason why more Americans don’t have high-speed Internet access. The findings from the Pew Internet and American Life Project challenge the argument that broadband providers need to more aggressively roll out supply to meet demand. Only 14 percent of dial-up users say they’re stuck with the older, slower connection technology because they can’t get broadband in their neighborhoods, Pew reported Wednesday. Thirty-five percent say they’re still on dial-up because broadband prices are too high, while another 19 percent say nothing would persuade them to upgrade. The remainder have other reasons or do not know.