Please enable JavaScript.
Coggle requires JavaScript to display documents.
GENETICS OF BEHAVIOR - Coggle Diagram
GENETICS OF BEHAVIOR
What is heritability?
Heritability is a statistic that refers to the proportion of variance observed in a group of individuals.
Describe the degree to which genetic differences
between individuals cause differences in an observed property
Like height, extroversion or the search for sensations.
-
-
-
Like height, weight, or personality.
Genotypic variance refers to individual differences in the total collection of genes that each person possesses.
Marriage
-
-
First, the individual differences in the marriage of women.
-
Interestingly, the personality of husbands does not explain so much their own marital satisfaction or that of their wives.
Genes play a role in the quality of marriages, and even who divorces rather than staying married, in part through inherited personality characteristics.
The human genome
-
The human genome contains between
20,000 and 30,000 genes.
-
Each person inherits one
set of each pair of chromosomes from the mother and one set from the father.
-
-
-
-
Personality traits
-
-
Extraversion is a dimension that contains outgoing and communicative people at one extreme and
people who are quiet and withdrawn at the other extreme (introverted).
Neuroticism is a dimension with one
ending characterized by anxious,nervous and emotionally volatile people and, at the other extreme, calm and
emotionally stable.
-
-
Drinking and smoking
Drinking and smoking are often considered behavioral manifestations of personality dispositions, such as
sensation seeking.
-
Studies of the heritability of alcoholism, unlike everyday drinking habits, show even stronger heritabilities.
-