Measurements were taken at several points in time over a 1 2 h period in order to test the effects of marginal enrichments, namely the provision of a jerrycan canister (Experiments 1a and 1b) and the provision of some sawdust and/or removal of the metal chain (Experiment 2).
Take, for example, a transmission chain experiment by Mesoudi et al. (2006), in which multiple stories varying in their social complexity were passed along chains of participants.
To do this, we conduct transmission chain experiments (cf Curio et al. 1978; Galef and Allen 1995; Laland and Williams 1997).
It would be informative to explicitly pit different biases against each other and test their relative strength in a standard transmission chain experiment (hence characterised by transformative transmission) versus a simple task of choosing which story to pass on (preservative).
The Tenet Healthcare Corporation, the second-largest for-profit hospital chain, is experimenting with providing cordless phones for nurses to use at work, scholarships for their children and discount purchasing programs.
Bloomingdales, for example, was one of the first retailers to test a social retailing system in its New York flagship store last year, and Mitsukoshi, a Japanese department store chain, began experimenting with an "intelligent fitting room" in 2004.
Key words: Writing down aims and content of the collaboration, coordination at care chain level, experimenting and reflecting.
Despite the pitfalls, other chains are experimenting with smaller formats.
A number of midprice restaurant chains are experimenting with them, a process that can take months.
Movie theater chains are experimenting with producing their own movies, an effort to expand the number of movies they can show.
