Allison Arieff has quit as editor in chief of the architecture and design magazine Dwell. Arieff helped found the magazine with Hedberg Dean, chairman of the magazine’s board. No replacement was named in a press release the magazine issued, but managing editor Ann Wilson Spradlin will move up to run the editorial department and report to publisher Michela O’Connor Abrams. Andrew Wagner and Sam Grawe, both senior editors, were promoted to executive editor.