In practice, it was not executed, due to lack of effective groups.

I doubt there's an effective group of fanatics anywhere that has not benefited from us.

It operates in three states, though efforts are being made in making this a nation-wide effective group.

And that's made them a much less effective group of people than they thought would be the case.

"On the whole, you'll find this an exceptionally effective group of ads."

In practice, they are effective, hardworking groups of professionals and laypeople who have a commitment to education.

We now have small, effective groups of rangers, 10 or so in each group, who set off on foot on planned operations.

The relationship becomes one of two pairs rather than an effective group of four members.

"My vision is to build the world's most effective group of managers, and we will stress such values as being honest with each other."

What roles would you expect to see played in: a. effective groups? b. ineffective groups?