Findings support the notion that suicidal behavior is unlikely to be resulting solely from any given psychiatric illness, although perhaps it shares a common genetic liability
with some of them.
Neurocognitive performance may be able to serve as a potential trait marker for SZ and BD and can suggest the degree of genetic liability
with their first-degree relatives.
Gerald Raymond suggested that one-year-old Jose be tested for the same genetic liability
as his older brother.
Figure 1 shows five groups differing in level of genetic liability
for a particular trait Y (e.
By studying both monozygotic (MZ) and dizygotic (DZ) twin pairs, we were able to control for childhood environment and partially for genetic liability
as MZ co-twins share all and DZ co-twins on average half of their segregating genes.