Nature, Nurture, and Human Diversity Flashcards
Behavior Genetics
The study of the relative power and limits of genetic and environmental influences on behavior
Environment
Every nongenetic influence, from prenatal nutrition to the people and things around us
Chromosomes
Thread like structures made of DNA molecules that contain the genes
Genes
The biochemical units of heredity that makeup the chromosomes; a segment of DNA capable of synthesizing a protein
Genome
The complete instructions for making an organism, consisting of all the genetic material in that organism’s chromosomes
DNA
A complex molecule containing the genetic information that makes up chromosomes
Heritability
The proportion of variation among individuals that we can attribute to genes. The heritability of a trait may vary, depending on the range of populations and environments studied.
Enriched environmentsa
Rats in enriched environments, stimulated a natural environment, usually developed a heavier and thicker brain cortex
Nature and nurture
Sculpt our synapses
Lacking exposure to language early means…
A child will never learn language
Norms
An understood rule for accepted and expected behavior. Norms prescribe “proper behavior”
Individualism
Giving priority to one’s own goals over group goals and defining one’s identity in terms of personal attributes rather than group identifications
Collectivism
Giving priority to goals of one’s group (often one’s extended family or work group) and defining one’s identity accordingly
Social learning Theory
Proposes that we learn gender behavior like any other behavior - reinforcement, punishment, and observation
Gender Schema Theory
Suggests that we learn cultural ‘recipe’ of how to be a male or female, which influences our gender - based on our perceptions of behaviors
Nature
chromosomes containing DNA are situated in the nucleus of the cell. We inherit of one set of 23 chromosomes from each parent.
Origin of blue eyes
Happened about 6000 - 10 000 years ago when there was a genetic mutation. All blue eyed people have one common ancestor. the gene code is called OCA2
Temperament
Refers to a persons stable emotional reactivity and intensity. Identical twins express similar temperaments, suggesting hereditary predisposes temperament
Evolutionary psychology
Study why we as humans are alike. It studies the evolution of behavior and mind using natural selection and evolutionary advantage over the species
Biology of Sex
Biological sex is determined by the 23rd pair of chromosomes. If the pair is XX, a female is produced. If a pair is XY, a male child is produced.
Turners Syndrome
X only females webbed necks, etc…
Klinefelter’s Syndrome
XXY only female, tall, long arms, legs, and breasts. Sterile, mild intellectual Disability
Double Y Syndrome
YYX Male, very tall, low intelligence
Sexual Differentiation
The mother’s womb, the male fetus is exposed to testosterone (because of the y chromosome) which leads to the development of male genitalia.
If low levels of testosterone are released in the uterus, the result is female