West Ham's players have a "duty" to respond to last weekend's 6-0 loss to Arsenal, said Hammers boss David Moyes.
His side play at Nottingham Forest on Saturday after suffering their heaviest home defeat in the Premier League era.
The Gunners were 4-0 up at half-time and thousands of West Ham fans left London Stadium long before the end.
"We've had a poor result, so we need to bounce back and we need to show it. I'm looking forward to seeing the attitude of the players," said Moyes.
"When you've lost like we did, I think you've got a duty [to respond].