What Is the Logic Behind Family Studies

Multiple Choice

What is the logic behind family studies?

A) Families share a culture and customs and hence are likely to be behaviorally similar with respect to disorders.
B) Some siblings in a family have stronger emotional relationships with one another which will lead these individuals to be more similar in their development and expression of disorders.
C) If the disorder is partially determined by genetics, biologically related individuals will be affected by the same psychological disorder at a higher rate.
D) If the disorder is partially determined by genetics, siblings will be more likely to share the disorder than parents and their children will.