Joe Root insists lessons must be learned by his England side after they suffered an eight-wicket defeat to New Zealand in the second Test at Edgbaston.

New Zealand clinched just their third series win in England – and first since 1999 – as they eased to a win which takes them to the top of the ICC Test rankings.

The Black Caps, who face India in the ICC Test Championship final next week, did the damage on Saturday, leaving England heading into day four on 122-9 in their second innings.

Trent Boult dismissed Olly Stone with the first delivery on Sunday, and New Zealand tallied up the 38 they required to win within the hour, although Devon Conway and Will Young lost their wickets.

England do not play another Test series until August, when they host India, and Root knows there is much to improve upon.

"More than anything, it's what we can take from it. You can have bad sessions on occasion with the ball but you can't have a session like that with the bat," he said at the post-match presentation.

"That's cost us, but throughout the game New Zealand outplayed us. If we lose quick wickets, how are we going to get through that? Mentally we have to make sure we're resilient and we manage passages of play better.

"It's the lessons from watching the opposition, using the experience in the dressing room, and trying to make sure when you're in the same situation to don't make the same mistakes.

"You can look for excuses but they outplayed us, they played good cricket and we've not matched that. We know we're better than this."

England have white-ball series against Sri Lanka and Pakistan coming up, and Root is hoping a switch to a different format will offer a reset for some of the squad.

"Freeing the mind, look at the game in a different context, it can liberate you. It's the chance to go back into a different format and find rhythm," he added.

"You can never beat wickets and runs."

New Zealand stand-in captain Tom Latham surpassed 4,000 Test runs on Sunday, and fittingly clipped away the winning boundary.

"Great to have that performance, through the four days it was outstanding, with a few changes, everyone came out and did their roles. It was a complete team performance," he said.

"[England have] a fantastic attack, a lot of wickets among them. We played them really well on surfaces we weren't expecting at Lord's and here. I thought we adapted well."