3 types of statistics:-
1.
Frequency:- no. of observations within the range of scores
2.
Central tendency: -
measure of central point of a distribution
3.
Variability: - scores are dispersed in distribution
Normal distribution:
- symmetrical distribution
Negatively skewed distribution: - curve with extended tail to left
Positively skewed distribution: - curve with extended tail to right
Central tendency
Variability
Hypothesis test: -statical method where diff among groups can have occurred due to chance
alone.
Statical significance: -mean is farther apart than expected
Null hypothesis: -diff btwn groups by chance
Experimental hypothesis: -diff due to variable
3.1
Behavioural genomics: - study of DNA to see which genes are related to behaviour
Behavioural genetics: - study of how genes and environment influence behaviour
Longitudinal studies: - studies that follows the same participants for years
Heritability: - static expressed from 0 to 1, how genetics is contributed. 0 meaning that genes
will have no effect on individual diff. and 1 states genes contribute to 100% individual
differences.
We cannot make definitive statements about the heritability of depression in Brazil based on
the results of a study conducted in Canada
why?
-
This is bcz heritability is affected by 2 things
1.
Amount of genetic variability in the groups studied
2.
Environment where these 2 groups were exposed
Epigenetics: -study of gene expression based on experience
Evolutionary species: -how human behaviours based on beneficial functions helped our
species develop
Hunter-gatherer theory: -diff roles done by males and females over evolution
Intrasexual selection:- members of the same sex compete to win the opposite sex
Intersexual selection:- one sex selects mating partner based on desirable traits
3.2
Neuron has 2 parts a cell body (aka soma) :- the part containing the nucleus and dendrites :-
branches.
