Reintroducing the 50-50 policy to boost Catholic recruitment in the PSNI would be premature, Simon Byrne has said.
The new chief constable said he was keen to examine other approaches to increase the numbers joining from the nationalist community before consideration was given to the positive-discrimination tool.
Mr Byrne said he wanted to explore innovative tactics that have paid dividends elsewhere, such as targeted pro-active approaches, via email, alerting would-be Catholic officers to recruitment opportunities.
The 50/50 policy - which ensured an equal number of Protestant and Catholics were recruited - was recommended by Lord Patten as part of peace process policing reforms to address the historic under-representation of officers from a nationalist background.
The policy helped drive significant change, increasing the percentage of Catholic officers from 8 per cent to over 30 per cent, but it drew much criticism from unionist politicians.
Read More: Simon Byrne says force is 'unique service with unique challenges'
The measure ended in 2011, but a recent downturn in the number of Catholic recruits joining the service – a trend linked to the dissident republican threat against them and their families – has prompted calls for its reintroduction.
Mr Byrne said it was too early to bring back 50-50. "I think that's premature frankly," he said.
"It was a product of its time, post-Patten. And in another place, I have called is it time to look at that in England, whenever we have had issues for example in recruiting black officers.
"But I think here before we take that step into legislation change and positive discrimination, it's about revisiting what we have done in the past, perhaps bringing some fresh thinking.
"For example I know in South Wales Police they have used issues where they will email people details about recruitment campaigns if they fit certain profiles and are interested in policing. So whether that be from the Catholic community maybe working class communities other ethnic minorities.
"So it's about keeping your eyes open for good ideas elsewhere, as well as making sure what we've done here well in the past is repeated."
Acknowledging the need to build confidence in policing in nationalist communities, Mr Byrne said he wanted to invest and rethink the approach to community policing.
He said he also wanted to see politicians and serving PSNI officers become "advocates" for policing as a positive career choice.
Mr Byrne, the former head of Cheshire Constabulary, has taken over from retiring chief constable Sir George Hamilton.
He said the PSNI was a "unique service with unique challenges".
"I am proud to be sat here with the list of things to do ahead of me," he said.
An ice hockey fan, Mr Byrne made a sporting analogy as he talked about his plans for the future of the PSNI.
"It's not where the puck is now, it's where it is going next," he said.
Mr Byrne said his first priority was to get out and about across the service and communities to see how the organisation "ticks".
Policing Board chair Anne Connolly welcomed his appointment.
"Today marks another new chapter in the history of the PSNI," she said.
"In leading the service forward Chief Constable Byrne's experience will bring a new perspective and focus to the delivery of the policing service.
"The chief constable position is challenging, demanding and carries a high profile and we know that there is a lot in the inbox to deal with.
"As a board we are very much looking forward to working with him to tackle the challenges that lie ahead and we wish him well in his new post."
