The Impact of Seemingly Minor Methodological Changes on Estimates of Travel and Correcting Bias

• Beaman, Jay ; Beaman, Jeff ; Oleary, Joseph T. ^[1] ; Smith, Stephen ^[2]
  1. [1] Purdue University

     Purdue University

     Township of Wabash, Estados Unidos

     
  2. [2] University of Waterloo

     University of Waterloo

     Canadá

     
• Localización: Tourism analysis, ISSN 1083-5423, Vol. 5, Nº. 2-4, 2000, págs. 91-96
• Idioma: inglés
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• Resumen

  • In 1998, evidence was developed suggesting that an observed 15 % decline in travel could be the result of methodological changes in the Canadian Travel Surveys (CTS) from 1994 to 1996 and 1997. Theory and a computational approach, applicable to large surveys where there is salience-based reporting of events, are introduced and used to correct the 1996 and 1997 CTS estimates for recall of low salience trips. Corrected estimates, rather than showing a decline in travel, show a near zero change in travel from 1994 to 1997, which corresponds to perceptions within the tourism industry.