Nature, Nurture, and Human Diversity – what causes our striking diversity in
psychological functioning, and also our shared identity?
Peoplediffer in many aspects of psychological functioning. For example, some
people possess a “type A” personality and are aggressive, ambitious, and
controlling, whereas others possess a “type B” personality and are passive and
easy – going.
Yet, we are als smilar in some aspects of our psychological functioning. For
example, whether we live in the Arctic or tropics, we divide the color spectrum
into similar colors.
The study of effects of environmental and genetic factors, and their interplay,
on differences in psychological traits
GENES : our codes for lyyyfeeee.
- Every cell in your body contains chromosomes – 23 from mama and
23 from papa.
- Each chromosome is made up of two DNA strands connected in a
- GENES are small segments of DNA molecules.
Twin and Adoption Studies
Identical Twins develop from a single fertilized egg and are genetically
identical, whereas Fraternal Twins develop from separate fertilized eggs
and share half their genes, just like siblings.
Correlation Between IQ’s of Family Members
Identical twins reared together .86
Fraternal twins reared together