I'm impressed by everything about The xx: the singing, the lyrics, the way the two principals shift roles without ever seeming hostile, cold or even unsupportive.

NPR: The xx: Switching Roles In Song

"The truth is that stress goes up because women add all their new roles to their old roles without crossing anything off their list, " said Dr. Witkin.

CNN: Holidays bring on emotional hazards

The European Parliament should have taken a lead, he lamented, since a quarter of its budget could be cut without affecting the core roles.

BBC: 2012 budget debate