What is a major shortcoming in the field of behavioral genetics in terms of their studies on human personality traits?
◦ Behavioral geneticists are unable to conduct controlled research studies on human subjects.
◦ Behavioral geneticists are unable to scientifically validate anything.
◦ Behavioral geneticists are unable to conduct studies on animals, only on humans.
◦ Behavioral geneticists conduct their studies by looking at single individuals over a long period of time, thus slowing the rate at which they can gather data.