Age gradients vs. metallicity gradient. Galaxies with cores are shown with red symbols, and core-less galaxies are represented in blue. The shape of the symbols indicates whether the galaxy is a slow (square) or a fast (circle) rotator. All galaxies follow an anti-correlation trend between the metallicity and age gradients. Core slow rotators are, however, found to have close to zero age gradients, while core-less slow rotators can have extreme positive and negative age gradients. Similar behaviour is observed for core fast rotator galaxies.