Part of the success of Big Brothers stems from its extensive screening of volunteers, a process that can last up to a year.

Registrars say that with the small profit margins in the business, they cannot afford more extensive screening.

It also underscores the need, at a time of greater program alternatives, for companies to undertake more extensive screening.

Programs are sometimes finished so close to their broadcast date that there is no time for extensive screening.

After extensive screening, two teams gather in a mall for a three-day shopping competition and survival "contest."

The Travis report, like all the others, called for more extensive pre-employment screening, additional training in conflict resolution and more supervision at every school.

There are few, if any, known incidents of parent volunteers abusing children, compared with many involving teachers or principals, who have gone through extensive screening.

In my opinion, therefore, more extensive screening could be the first effective and rapid step towards preventing many deaths.

CompuServe developed extensive screening and reporting tools that were used by many investment banks on Wall Street.

Each time, she was paid $1,500 for undergoing extensive screening, three weeks of hormone injections and outpatient surgery to retrieve her eggs.