Answer:
Many aspects of human characteristics (such as height and eye color) are largely genetically determined. Psychology researchers, however, tend to be interested in dimensions that are relatively less determined by genetics traits that subject more to environmental influences, such as how a person feels, acts, and thinks.
Explanation:
For example, Javier has two biological daughters who share the same biological mother. Both are tall, well mannered, and musically inclined. Despite these similarities, the older child appears socially reserved and quiet, while the younger one, who was born into the same family environment, seems more outgoing. In addition, one of his children has been diagnosed with a learning disability while the other seems exceptionally well-functioning cognitively. How can these similarities and differences between the two children be explained? One may think, "Well, Javier is tall and he is also a talented musician himself, so these girls must have gotten these 'good genes' from Javier. And he is quite strict when it comes to disciplining his children, so that explains their good manners. But why is the younger one so sociable—and what about her learning disability? Maybe she hasn't been read to as much as the older one has." In essence, hereditary influences and various environmental factors in these children's lives are being weighed and analyzed in explaining the characteristics of these children.
