DURHAM, N.C. -- A campus religious leader is unhappy about a study at Duke University that invites female students to attend parties where they can buy sex toys.

The News & Observer of Raleigh reported Friday that the director of the Duke Catholic Center has lodged a complaint with researchers. The Rev. Joe Vetter says the study doesn't promote relationships.

The study asks female students over age 18 to attend the events that are similar to Tupperware parties but with erotic toys, lingerie and games. The women complete surveys about their sexual attitudes before and after the parties and get product discounts.

DURHAM, N.C. — At Duke University, a school that likes to tout its cutting-edge research, a sex toy study being conducted by a behavioral economist and student health workers has roused criticism.

For much of October, researchers recruited female Duke students to take part in a "sexually explicit" study on Tupperware-style parties in which sex toys, not kitchenware, are the draw.

The ads, which were posted around campus and on a research study Web site, sought female students at least 18 years old to "view sex toys and engage in sexually explicit conversation with other female Duke students."

Participants will be asked to complete online questionnaires about their sexual attitudes and behaviors and visit the lab for a "one-hour party" with seven or eight wo....