re-interview (MxFLS-2), the current number of respondents in MxFLS-3 is approximately 38,000. Attempts to track down all panel respondents who have not yet been located continue. MxFLS-3 participants include individuals who never left Mexico, those who migrated to the United States before MxFLS-2 and are still in the United States, those who migrated to the United States after MxFLS-2, and those who migrated to the United States sometime between MxFLS-1 and MxFLS-3 but have since decided to return to Mexico.
A unique aspect of the MxFLS is that it gathers the same type of social-demographic information (including health, reproductive decisions, education, and other data) on Mexicans who have stayed in Mexico and those who have decided to migrate. To date, about 1,179 panel respondents have been re-interviewed in the United States. It is estimated that they constitute about 80 percent of the panel respondents who migrated and still reside in the United States. Approximately half of the panel respondents who were in the United States at the time of MxFLS-2 had returned to Mexico by MxFLS-3.
Every panel respondent is asked several questions that attempt to capture migration history at the personal level. Respondents are asked about their place of birth and about their place of residence at age 12. After age 12, respondents are asked to provide more detailed information about moves within Mexico and between Mexico and other countries. For each move that lasts more than 1 year, respondents are asked for the migration date, destination (locality, municipality, state, and country), reason for leaving, people moving with the respondent, and source of funds. If the respondent moved to the United States, the type of documentation (none, visa, green card, citizenship) carried by the respondent is also recorded. For the 2-year period preceding a survey wave, respondents are asked to report the same information, but only for moves that last a month or longer. Finally, respondents are also asked prospective questions about their intentions to move. If they plan on moving sometime in the future, the likely destination, reason for the move, and the existing networks in their destination are recorded.
MEXICAN MIGRATION PROJECT
The MMP is a binational research effort that is codirected by Jorge Durand (Professor of Social Anthropology at the University of Guadalajara) and Douglas S. Massey (Professor of Sociology and Public Affairs at Princeton University).26 Since its creation in 1982, the MMP has focused
26 The description of MMP that follows is based largely on information from the public website http://mmp.opr.princeton.edu/research/design-en.aspx.