Slaven Bilić believes both Albion and Leeds will be confronted with “huge tests” when the two sides meet at Elland Road on Tuesday night (ko 7.45pm).
The Baggies are top of the Sky Bet Championship table going into the televised fixture with Leeds, who are just two points behind in fourth place.
And the boss says his side must learn to play with the “responsibility” that comes with leading the way in the league.
“We are confident, you can see that,” he admits. "But it’s not only the results, even though they are most important. The results came from good performances but we have to stay humble with both feet on the ground.
“We know what we have to do in every game and in every training to be in with a chance to stay in this position that we are in.
“For us it brings a little bit more responsibility because if you are top of the table, okay you can’t expect to win every game, but if you are top of the table then you have to play like a team that’s top of the table - with confidence, with toughness, with a plan, with the attitude and approach of a top-of-the-table team. Week-in, week-out.”
He added: “This is one of the biggest tests. Okay, their last couple of results for them are not what they expected, but that shows how tough this league is. To be fair, in both of those games they were superior, and that’s not taking anything away from Charlton and Derby.
“We all know how they play. It’s lots of pressing, lots of running, a lot of energy. They try to squeeze you.
“In terms of how big a test this is, of course it is a huge test but we are happy we have these kinds of tests and we also want to test ourselves against the best. We expect, to be fair, that it’s also going to be a very good test for them.
“The crowd doesn’t bring pressure, it brings joy. That’s the reason you decide to play football. It’s a privilege to play in that kind of atmosphere and we are not a small club. The majority of our players, if not all, have played in front of bigger crowds so I wouldn’t say that will add pressure.”