Newcastle surprised everyone with a solid 2-0 win over Jurgen Klopp's men and Lawrenson feels some over-confdience might have set in on Merseyside.
Indeed, the pundit says the Anfield outfit's performance against the Magpies was their worst under Klopp.
Lawrenson told Match of the Day 2 on Sunday night: "That was the worst they’d been since Klopp has taken over. I don’t know if they’d been reading the papers or anything about what people have been saying about how good they’ve been."
Intriguingly, Liverpool covered almost as much distance against Newcastle as they had done during the 4-1 win over Manchester City.
But it was about what they did on and off the ball, not just how much they ran. Plenty of the blame must go to Klopp himself but, after masterminding the recent triumphs against Manchester City and Southampton, the odd mistake can be forgiven.
Playing Lucas alongside Joe Allen was never going to be a wise idea - even Brendan Rodgers eventually learned that. Lawrenson's theory, however, makes sense, too. Perhaps the Liverpool players believed their own hype and received a little reality check as a result.