Catégories : Tous - environment - genetics - temperament - differences

par Joerg Bauer Il y a 14 années

308

b1 ch5 narrative

The discussion explores the origins and development of personality traits, emphasizing genetic influences and their interaction with the environment. Studies on twins, particularly the Minnesota Twins correlation, highlight the significant role of genetics, although shared environments also contribute to similarities.

b1 ch5 narrative

b1 ch5 narrative

G. Temp and Development (how genes and environment interact)

Transactions
Sameroff: Transactions

influnencing behaviour of caregivers

Goodness of fit

Isabella: caregiver personality not corr with child attachment but interaction is.

Direct effects
self-selection of environments
Dunn & Kendrick

More stressed on arrival of sibling

Keogh: in School

Factors like attention or impulisivity

Scarr's PA 3 interations
evocative: child evokes response
active: self selection
passive: sharing char.

F. 4 Termp Theories

Dunn&Kendrick: jealousy
Importance of environment

siblings reaction to newborn not only related to temperament but quality and stability of interaction.

Bus and Plomin's EAS
EAS framwork

Emotinality/ Activiy / Sociability

Links well with Eysencks: EPI

Extroversion

Neuroticism

factor analysis

Kagen's inhibited child
Kagen found a type that shows strong behavioral inhibition i.e. to new things

change possible with concious effort

links this to arrousal level in the limbic system

75% stabilty

Linked with later problem behaviour

Thomas&Chess'9
But

Vaughan's Uterus

Mothers formed a view before child was born: Ratings of temperament related to mothers personality and attitudes on child rearing

Pauli&Potts: emotionality at 4 p

erceptios of emotionality at 4m predict measurement at 8

Bates& Bales: Mother problems

link of problem behav reported by mom at 2y with later 3-6y

Also 3 Types

easy child

slow to warm up

difficult child(increased risk of later behvour problems)

approach

rhythmicality

adaptabilty

mood

9 Dimesions

But: Some factors possibly overlapping

i.e distractibilty and attention span

E. Methods

face to face Interviews
social desirealbilty or problems with understanding
potentially more accurate
parental observations
But: Hagekull: Good corrlation between partents reporst and direct observation
good acces but biased

D. How stable is it

Long Term: clear relationship
Caspi et al: 1000 3y

cat in 5 Types

26

close friend

MPQ

self

Short Term: high stability
Hinde & Tobin

4 y

assessment at home and in play group

Gender: behvioural differneces

Shy

G. Less hostile w. peers

G: better rel. w. mother

"coherence of termperament" across contexts

Plomin: Colorado Adoption Project

But: based on parental ratings (sim to previous)

less stability

high stability from 1-4

emotionality

C. What'sthe cause?

MAOA(m) re-uptake
Caspi et al

Seronotine transporter: aggressive only with kids who been in abusive environment.

7r Dopamine Receptors
Schmidt's: Older Kids

Problem with attention, risk taking and aggressive behaviour

Auerbach: General:

Dopamine receptor assotiated with temperamental differnces

Genetic origin
Buss& Plomins: Minnesota Twins correlation

But: MZ often similar environm.

activity

sociability

B. What and when ?

variation accross time
continuity

similar characteristics accross time

stabilty

same behaviour over days or weeks

Important temperamental differences and time of emergence (contrad. to def)
But: Other genetic factors like intelligence also only experess themselves later
very late

effortful Control (i.e. Rothbart)

inhibition to persue a goal

very early

Inhibition (s. Kagan)

Agreement on 3 broad categories
Motor activity
attentional
emotional

A. Introduction

Temperament
Def.

(TempoSition) Disposition to act in particular ways accross time and situation not regarding the influence of cognition. Tought to be inherited.

Personality theories
Trait

Costa McCrae

Big 5

Eysencks EPI

people vary on certain dimesions

Type

MBTI

the four humours

People are qualitativly differnt