Jos Verstappen believes his son Max is now using his head more often during his races, and avoiding the pitfalls that undermined his efforts in the past and earlier this season.
Verstappen endured an erratic start to his 2018 campaign, but progressively the 20-year-old Red Bull charger has focused on consistency without sacrificing any of his speed.
"You can see the progress he has made during the year," Jos Verstappen told told Ziggo Sport.
"After Monaco, he took some good steps. He now thinks a bit more during the races."
Despite Daniel Ricciardo winning twice this year compared to Verstappen's single win - achieved in Austria - the latter's track record his put him 24 points clear of his team mate in the drivers' standings.
Verstappen has also outqualified Ricciardo for ten consecutive races, or every single race since Monaco.
Referring to his son's improved attitude, Jos believes his own input ad advice has helped.
"Did I tell him that? Yes, several times," laughed the former F1 driver.
"We discuss everything together and he listens, because we have agreed that I can always have my say. But he does what he wants."
Gallery: The beautiful wives and girlfriends of F1 drivers
Keep up to date with all the F1 news via Facebook and Twitter
When F1’s radically redesigned 2026 cars finally roll out in Barcelona at the end of…
Max Verstappen has never been one to sugar-coat reality – and as Formula 1 braces…
Ferrari have survived decades of criticism about strategy calls, driver politics and pit stops that…
While the paddock has been whispering for months that Mercedes might be holding the winning…
Dan Gurney passed away on this day in 2018, and here at F1i we'll never…
What began as a painful reminder of loss has ended with a moment of profound…