Center of Gravity
The most likely place where these objects were kept. This includes in a bag, on low tables or on the side of a desk.
The Point of Reflection
The moment when you check to see where all your essential objects are and if they are all in place. Commonly called "panic" for most of us.
Range of Distribution
The range of distance that these objects are scattered over.
The research also uncovered that people quickly convert taxis to private space in the way they organize their objects, but "a pressured sequence of tasks at the end of the journey such as thinking what to do next on arrival at the destination and paying the driver, help explain why mobile phones are often left in taxis."
This post provides a glimpse into the type of studies that Nokia is doing and it's interesting to see the importance of ethnography in its research. Now, if only they used this research and built a device to help people find their keys faster.
via kathrynyu
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See also Rachel Strickland's Portable Effects project: http://www.portablefx.com/