a fair amount of certainty that pride of ownership is inversely proportional to the ease with which one assembles the furniture; wires the high-definition television to the surround-sound system; installs software; or gets the baby into the bath, dried, powdered, diapered, and tucked away in the crib. My friend and colleague Mike Norton (a professor at Harvard) and I have a term for this phenomenon: the “Ikea effect.”