New Zealand's under-fire batsmen have been working on their confidence and trust in their techniques as they try to turn the Test series around against India on Friday.

The Black Caps need a big turnaround from their loss by an innings in Hyderabad to be competitive when the second Test starts in Bangalore on Friday, particularly the batsmen who failed dismally to handle Indian spinners Ravichandran Ashwin and Pragyan Ojha.

New Zealand batsmen haven't handled spin bowling well traditionally but coach Mike Hesson says it's their mental approach as much as their core technique which is often the problem.

"One of the key areas we've worked on is getting the players to trust their game plan. Obviously we work on enhancing it and making it technically stronger, but it's very, very important once you get out in the middle to trust that technique," Hesson said.

"We lost a number of wickets through indecision in the last match and that's certainly something we'll be looking to improve in this match."

It is just Hesson's second Test in charge but most of the players were involved in the series loss to the West Indies and they were determined to improve the team's Test credibility.

"The guys are pretty disappointed in how we played in Hyderabad. We were outplayed in all three areas of the game, that was pretty plain to see," Hesson said.

"We know that there's a number of areas that we need to develop. Some of them are ongoing issues. As a group we are very determined to put on a very good performance."

Hesson said the team hadn't yet decided whether to have a two-pronged spin attack and bring in legspinner Tarun Nethula or retain three seamers.

"The pitch over here changes very quickly in a short period of time and we've no preconceived ideas on what the side will be. We'll just play our four best bowlers for the conditions."

NZ Newswire