Abstract
In this research note, DeFries-Fulker (DF) regression analysis is reframed in model-fitting terms, where an individual's expected score is modeled as a function of their co-twin's proband status. This more flexible implementation of the DF model allows DZ-O twins to be incorporated in a sex-limitation model. Brief simulation results are presented along with the Mx scripts used.
Original language | English |
---|---|
Pages (from-to) | 271-278 |
Number of pages | 8 |
Journal | Behavior Genetics |
Volume | 33 |
Issue number | 3 |
DOIs | |
State | Published - May 2003 |
Externally published | Yes |
Keywords
- DeFries-Fulker analysis
- Maximum likelihood estimation
- Sex differences
- Twins