Realism and Adaptation in Designing Hypothetical travel Choice Concepts
For external validity, SP experiments need to present choices that are realistic for the respondents. The use of portable computers in interviewing has many advantages.
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A Possible Economic Basis for the Gravity Model
- R.A. Cochrane
- January 1975
- Vol. 9
- No. 1
- Page 34
A Possible Economic Basis for the Gravity Model
- R.A. Cochrane
- January 1975
- Vol. 9
- No. 1
- Page 34
In the hope of improving our understanding of the demand for travel, the author presents his derivation of the gravity model for trip distribution, and relates it to general economic theory.
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