Not being used to the new tactic some shoddy defending led to the Royals going two down inside of five minutes. However, ten-man Reading arguably had the better of the game despite spending much of it with just ten men on the field.
With a tough away fixture at Wolves tomorrow Pards will use a 3-5-2 formation again in attempt to break the disappointing run of three straight defeats.
"There were a couple of good reasons why I changed it. The first is we don't have a lot of height and power in the side and we didn't look threatening at set-plays," said Pardew, speaking to Teamtalk.com.
"Matthew Upson coming in adds a bit more height and power. I also felt we needed to strengthen the central-midfield area and this way gives me the chance to put someone else in."
Whilst the system isn't perfect Pardew believes that given time it will work.
"We need more quality and we are trying to create more. We didn't have a lot of time to work on things, but I want to win every game and if that means changing the system and introducing new players then that's what will happen and I will probably go with it again.
"I thought we played very well (against the Canaries) considering we were down to 10 men so we will see how we get on over the next two or three games (with the new formation.
"We are under no illusions, Wolves away is going to be tough. It is not an ideal time to be going there as they had no midweek game, but I do feel we are due a little bit of something to go for us.
"Wolves are a top side like Norwich and I think for the first time this season our home fans have really seen a top side in Norwich."