The Crows were the third best fourth-quarter side in the competition last year, behind Hawthorn and the Power, but still lost six games by fewer than three goals.
Dangerfield said turnovers under fatigue played a crucial role in the disappointments.
He told Adelaide radio station 5AA that to train for game situations where fatigue was a factor the side had been pushed hard during pre-season sessions before running skill-based drills without rest.
The introduction of the 120-interchange rule this season is expected to increase player fatigue levels.
"When we are under fatigue and really challenged in games, the players who can hit targets and help us maintain possession of the ball are the ones that are going to be playing," Dangerfield said.
"That's an area that we certainly weren't very good at last season and we'll look to improve because the stats speak for themselves – last season we lost [five] games by under two goals.
"There's little areas in those games when you lose possession of the ball when perhaps you shouldn't."
The superstar midfielder also threw his support behind emerging duo Brodie Smith and Sam Kerridge as players capable of replacing injured captain Nathan van Berlo in the club's midfield.
Van Berlo ruptured his Achilles tendon in mid-January and is expected to miss at least six months.
Dangerfield was appointed acting co-captain along with Rory Sloane last week and said 22-year-old Smith and 20-year-old Kerridge had both trained the house down over the summer.
Kerridge played 11 games last year and earned a NAB AFL Rising Star Award nomination for his six-goal performance against North Melbourne in round nine.
While pushed to half-back for much of his time at West Lakes, Smith recently told AFL.com.au he was keen to play in the midfield this year.
"They've really set themselves up well with the pre-season and what they've done," Dangerfield said.
"I imagine both will run through the midfield - when players get to the 50-plus games mark, which Brodie Smith is at, you're ready to take the next step.
"When one door closes for someone it opens for another and that's certainly the case for a position in our midfield.
"Sam's certainly setting himself for that position.
"We saw him play a fair bit through half forward last season and he's got an outstanding motor and he can run all day - he suits playing through the midfield."
The Crows' NAB Challenge begins with a game against archrivals Port Adelaide on February 16 before they face Carlton on February 24.
Twitter: @AFL_Harry
