The defender believes the side can leapfrog teams if they can keep the run of results up.
He told iFollow Iron: “In the space of a few weeks, things can change quickly, especially with Saturday and Tuesday games coming. If we keep going and get another couple of wins, the league position will look much better.”
However, he urged the team not to get too carried away, with just one defeat in the last seven games.
He said: “It’s always nice to have a positive run going and we need to keep building on that. We don’t want to get too ahead of ourselves; it’s important we keep our feet on the ground. We look at the games where we’ve done well and the sort of things we’ve done.”
The Iron took three points and three goals from the game against the Cobblers but he warned his teammates not to take their eyes off the ball when in the lead.
“The first-half was good. Everyone’s happy with the outcome. We got the goals and once they went down to 10 men, we got a bit sloppy at times; we gave them a foothold in the game,” he added.
“That’s something we’ve got to take from that game, as good as it was. We can’t get complacent.”
McArdle was delighted to keep a clean sheet against the Cobblers, admitting some of the pressure has been lifted from the back four, with the return of players such as Lee Novak and Jamie Proctor.
“It always gives you a foundation or a base to build from if you keep clean sheets. Now, we’re getting lads back fit, especially at the top end of the pitch. They’re putting their chances away and creating chances,” he said.
“The new lads that’ve come in are gelling nicely. We know at the back we can keep that back door shut.”
The Iron travel to Newport County at the weekend and McArdle is looking forward to the trip to South Wales.
He said: “It’ll be a tough game but equally, one everyone is looking forward to. We want to build on the last few weeks.”
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