Resumen de The Impact of Seemingly Minor Methodological Changes on Estimates of Travel and Correcting Bias
Jay Beaman, Jeff Beaman, Joseph T. O'Leary, Stephen Smith
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.
