Definition
This variable reports whether a person's mother, as identified by mother's location in the household (US50A403), was likely to have been the person's stepmother or adoptive mother.
Non-zero values explain why it is probable that the person's mother was a step- or adoptive mother. A value of 0 indicates no likely stepmother because (1) the mother identified in mother's location in the household (US50A403) was probably the biological mother or (2) there was no mother of this person present in the household. The NAPP assumes that the mother is the biological mother if she is (1) the householder and reported the child to be her son/daughter, or (2) the wife of the householder, who reported the child to be his son/daughter. For the 1850 U.S. sample, this variable is based on imputed relationship (US50A423), rather than on relationship to household head (US50A421).
The following codes are included in this variable: 0 = Biological mother or no mother of this person present in household. 1 = Age difference between mother and child was less than 12 or greater than 54 years. 2 = Link was established only because the mother was married to the father (according toUS50A411). The listed order of family members on the form was non-standard.
If a link could be made according to more than one rule, the lowest-numbered rule was applied.
