LAS VEGAS (AP)- Less profanity means more money for PG-rated films.

A study by the Neilsen company concludes PG-rated movies with the least amount of profanity make the most money at the box office.

Neilsen says parents are picking PG movies for their children that have "very, very low levels of profanity," about a one-third as much as in a typical PG film.

Neilsen says parents seem to be more concerned about the language in a PG movie than about how much sex and violence it has.

The study also looked at other early predictors of box-office success. As might be expected, movies receiving approval from more than 70 percent of critics earn far more money.

It also finds that good buzz on the Internet often means more ticket sales. One genre the buzz doesn't seem to help: horror flicks.