What does time spent on searching indicate?

Pia Borlund, Sabine Dreier, Katriina Byström. What does time spent on searching indicate?. In Jaap Kamps, Wessel Kraaij, Norbert Fuhr, editors, Information Interaction in Context: 2012, IIix'12, Nijmegen, The Netherlands, August 21-24, 2012. pages 184-193, ACM, 2012. [doi]

@inproceedings{BorlundDB12,
  title = {What does time spent on searching indicate?},
  author = {Pia Borlund and Sabine Dreier and Katriina Byström},
  year = {2012},
  doi = {10.1145/2362724.2362756},
  url = {http://doi.acm.org/10.1145/2362724.2362756},
  researchr = {https://researchr.org/publication/BorlundDB12},
  cites = {0},
  citedby = {0},
  pages = {184-193},
  booktitle = {Information Interaction in Context: 2012, IIix'12, Nijmegen, The Netherlands, August 21-24, 2012},
  editor = {Jaap Kamps and Wessel Kraaij and Norbert Fuhr},
  publisher = {ACM},
  isbn = {978-1-4503-1282-0},
}