Definition
This variable reports why the NAPP variable father's location in the household (US50A407) linked the person to a probable father. The NAPP establishes father-child links according to five basic rules, and this variable reports the number of the rule for the link in question. If a link could be made according to more than one rule, the lowest-numbered rule was applied. See also father's location in the household (US50A407), probable step/adopted father (US50A408), and "Family Interrelationships" for more information.
The following codes are included in this variable:
0 = No father of this person present in household.
1 = Unambiguous relationship, based on imputed relationship (US50A423). This covers three basic cases:
a) a person listed as a son or daughter is linked to the person listed as the head or the spouse of the female head.b) a person listed as head, brother, or sister is linked to the person listed as father.c) a person listed as wife, brother-in-law, or sister-in-law is linked to a person listed as father-in-law.
2 = Persons listed as grandchildren are linked to the most proximate preceding (on the form) ever-married son, an unmarried son (if immediately followed by the grandchild), or son-in-law of the head, if the son/son-in-law is 15-79 years older than the grandchild. If no link is formed with a preceding male, the program looks for the most proximate subsequent male who satisfies these criteria.
3 = Other persons are linked to any preceding ever-married male who is 15-64 years older, so long as:
a) the two persons have imputed relationships to the head (US50A423) that, when compared with one another, make a child-father link plausible,b) there are no persons listed between the potential child and father, except the potential father's other children or wife, and
4 = Same as rule 3, but surname similarity overrides the second part of rule 3. If more than one potential father is found in this way, the most proximate preceding male is linked.
7 = If the child is already linked to a mother (see mother's location in the householdUS50A403 and rule or linking mother US50A405), and that mother has a husband present in the household who has not been linked to the child by another rule, the husband is linked to the child as a stepfather, regardless of the age gap between the child and the stepfather.
The NAPP performs the following consistency checks:
If the child was linked to a father and mother who were not married to one another, the NAPP unlinked the father. If a husband and wife were both linked to the same father, the NAPP chose the best parental link, based on detailed relationship, surname, and proximity within the household, as listed on the form.
If both parents were present but they were not married to each other, the NAPP unlinked the father if his surname did not match that of the child.
