Craig Brown has blamed poor defending as Aberdeen miserable form continued with a loss to Hibs.
The Dons manager has seen his team lose six of the last eight games, including back-to-back losses to the SPL’s bottom two.
A Mark Reynolds own goal and a second from Sean O’Hanlon saw Hibs leading 2-0 after just 16 minutes and Aberdeen could not recover, despite a late rally.
Brown said: "We lost two very bad goals and that gave the Hibs team a very big lift. We are a bit ragged at the back, there is no doubt about that. There are new personnel there and they need to get used to playing together.
"When there is an expectation on us to win we are not fulfilling it and we have to address that. We seem to do better against the likes of the Old Firm and Dundee United when there is less expectation on us."
Goalkeeper Jamie Langfield, who earlier in the day penned a new two year deal at Pittodrie, said the start to the match gave the Dons too big a mountain to climb.
"If you start a match the way we started then it is always going to be an uphill task - especially at home.
“We didn't get going at all in the first half and lost two silly goals. We did play better in the second half but it was too late by then."