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 | Any source of choice data has its own set of peculiarities and characteristics.
For example, Revealed Preference (RP) choice data (which are actual decisions made in the
market) have high face validity and embody constraints (e.g. income, distribution). On the
other hand, it is very common for this data to exhibit high colinearity among explanatory
variables in statistical models of choice behavior. Stated Preference (SP) choice data, in
contrast, is collected in hypothetical decision contexts, but under highly controlled
conditions as far as the independent variables are concerned. |
| Morikawa (1989) began a research stream into the means to combine multiple
choice data sources so as to exploit the strengths and mitigate the weaknesses of each. |
Research Publications
References
Morikawa, T. (1989) Incorporating Stated
Preference Data in Travel Demand Analysis, PhD Dissertation, Department of Civil
Engineering, M.I.T.
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