TABLE 4.
Variables From 1960 Project TALENT Assessment Used to Link Siblings and Identify Twins
| Variable name | Description or question wording |
|---|---|
| —a | Birth date, student’s last name, mother’s maiden name, father’s first name, address, New York City/Chicago sample flag, feeder school code, date of last contact (through 1977) |
| By_test grade | Class year in school |
| By_school | School code |
| By_SIB130b | Who is the breadwinner |
| By_SIB200 | Twin, triplet, or quadruplet |
| By_SIB215b | Age of father |
| By_SIB216b | Age of mother |
| By_SIB220 | Who is head of household |
| By_SIB221 | Total number of living children in family |
| By_SIB222b | Number of older brothers |
| By_SIB223b | Number of older sisters |
| By_SIB226 | Number of people living in the home |
Note:
a
These variables are not available in the archived dataset
b
Variable was only used when manually verifying twins.