Psychology Of Childhood Flashcards
Temperament
Individual differences in emotion activity level and attention that’s re exhibited across context and present from infancy
Between person approach:
Easy child, difficult child, slow to warm child
Within person approach:
Fear child, distress/anger child, attention span, activity level, smiling/laughter child
Biological families
Not possible to disentangle effects of genetics and environmental factors
Genetically informative research
Twin design: monozygotic vs dizygotic twins, twins reared apart vs twins reared together
Adoption design: biological and adoptive parents, adoptive vs non adoptive families
Adoption design
Biological families have “genetic plus environmental” parents
Biological parents share genes but not environment with child
Adoptive parents share environment but not genes with child
Parent s and child resemblance
variation due to nature
variation due to nurture
If trait variation entirely due to nurture
-correlation strong for non adoptive and adoptive but not adopted apart children
If trait variation entirely due to nature
-correlation strong for non adoptive, adopted apart but not adoptive children
Adoption study limitations
Adoptees not randomly placed into families, get chosen
Adoption studies not generalise to population at large
Prenatal influences not considered eg biological mother smoking
Adoption (especially at birth) is unusual event
Twin design
- comparing resemblance allows for rough estimate of separate genetic and environmental contributions to trait
- assessed with correlation between pair of twins, separate correlations for MZ and DZ twins
- MZ resemblance 100%
- DZ resemblance 50%
Child temperament traits and significant genetic influence
Consistently found MZ more similar than DZ variety of temperament dimensions:
- emotionality
- shyness
- sociability
- attention/persistence
- approach
- adaptability
- distress
- positive affect and negative affect
Iimitation of twin design
Equal environments assumption; assume similar for fraternal and identical twins, MZ share more similar environments
Twin studies not generalise to population at large; twins more susceptible to prenatal trauma leading to mental retardation
MZ twins not 100% genetically identical; various biological mechanisms lead to genetic differences between MZ
Heritability
- proportion of variance in population attributable to genetic differences between people
- Estimate only applies to particular population living in particular environment at particular time
Twin study of child temperament
Lemerey chalfant 2013
301 MZ twins, 263 DZ same sex, 243 DZ opposite sex
parent telephone interview and home visits
Finding 1: effortful control, negative affect and extraversion show high heritability; 54%, 79%, 49%
Finding 2: home environments under genetic influence affect personality
pediatric approach
definition of temperament
general term referring to ‘how’ of behaviour…differs from ability … and motivation… concerns the way in which an individual behaves
pediatric approach
constituents of temperament
a.r.a-w.a.r.ir.mq.d.as
activity level regularity approach-withdrawal adaptability threshold of responsiveness intensity of reaction quality of mood distractibility attention span
pediatric approach
typology of children
easy child: regular, positive mood etc
difficult child: irregular, high activity level
slow to warm: low activity level, low intensity of mood
personality tradition approach
definition of temperament
temperament is set of inherited personality traits that appear in early life
two defining characteristics: traits genetic in origin and appear in infancy
personality tradition
constituents
emotionality
activity
sociability
individual differences approach
temperament definition
constitutionally based individual differences in emotional, motor, attentional reactivity and self regulation
temperamental characteristics seen to demonstrate consistency across situations and stability over time
individual differences approach
constituents
fd.id.as-p.a.p.r.a/a
fearful distress/inhibition irritable distress attention span and persistence activity level positive affect/approach rhythmicity agreeableness/adaptability
commonalities of the temperament approaches
- temperament refers to individual differences not normative characteristics
- refers to set of traits
- reflect behavioural tendencies that are pervasive across situations and show stability
- emphasis on biological underpinnings
- emerges early in life
disagreements of the temperament approaches
- differing boundaries for temperament
- differing constituents (excluding activity level and emotionality)
- relationship between temperament and personality construed differently
heritabiltiy of temperament
EAS traits
- strongest evidence for EAS traits
- MZ twins: 0.63 emotionality, 0.62 activity, 0.53 sociability
- DZ twins: 0.12 emotionality, -0.13 activity, -0.03 sociability
- as whole temperament is moderately influenced by genetic factors, estimate is similar across ages
- stability in temperament is mediated by genetic factors , environmental factors account for age-to-age change
clinical application of temperament
- temperament is a departure from the ‘tabula rasa’ concept
- introduced the ‘goodness of fit’ concept
- advocate of interactionist, idiographic approach
goodness/poorness of fit
-when child capacities, motivations and temperament are either adequate or inadequate to master the expectations, demands and opportunities of environment, if inadequate can lead to maladaptive functioning and distorted development
temperament and subsequent adjustment
prior 1992
- relationships generally moderate strength; prediction from infancy is weak
- difficult and active babies at increased risk for colic, sleep problems, excessive crying and abdominal pain
- temperament difficulty associated with both internalising and externalising problems