Another possible way that genetic information may prove useful is in helping differentiate the root cause of an individual’s symptoms. Many behavioral challenges cluster (Dick, Viken, Kaprio, Pulkkinen, & Rose, 2005; Kessler et al., 1997), so it can be challenging clinically to know the root cause of the underlying problems for which intervention is desired. For example, it may be unclear whether it is underlying anxiety or issues with self-control that are leading to a child’s disruptive behavior. In another example, it may be unclear whether underlying depression led to alcohol misuse, or whether an individual’s alcohol misuse led to depression. It is possible that genetic information will be able to assist with differential diagnosis, which may help guide decisions about intervention.
