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1 Psychology 305A Lecture 5 Part 1 Trait Taxonomies Personality Change and Stability
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Page 1: Psychology 305A Lecture 5 Part 1 Trait Taxonomies ...ubc-emotionlab.ca/wp-content/uploads/2013/08/Lecture-5-part-1-Eric… · 1 Psychology 305A Lecture 5 Part 1 Trait Taxonomies ...

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Psychology 305ALecture 5 Part 1

Trait TaxonomiesPersonality Change and Stability

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¨ Theoretical approach: Hans Eysenck¡ Personality taxonomy should be rooted in biology

¨ 3 major traits of interest: “PEN”¡ Psychoticism (related to testosterone level)¡ Extraversion (related to physiological arousal)¡ Neuroticism (related to fluctuations in

autonomic nervous system)

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3Circumplex taxonomy

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¨ Broad level factors are statistically independent¡ Your level on one factor does not have any relation

to your level on another factor¡ Possible to be high N + high E, high N + low E, low

N + low E, or low N + high E

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Gob Bluth: Low N, High ELow N: Not concerned about anythingHigh E: High energy, Charming and outgoing,

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¨ Broad level factors are statistically independent¡ Your level on one factor does not have any relation

to your level on another factor¡ Possible to be high N + high E, high N + low E, low

N + low E, or low N + high E

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Buster Bluth: High N, Low EHigh N: Anxious, Pessimistic, Low E: Does not have many friends, Only hangs out with his Mom

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¨ Not all-inclusive¡ Other empirical studies found more than 3 factors

¨ Other traits show heritability¡ e.g., conscientiousness

¨ Other taxonomies developed to address issues¡ Wiggins’ theory of interpersonal traits

ú Agency + Communion¡ Cattell’s 16¡ The Five Factor Model (FFM)

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¨ Openness ¡ Curious and unconventional

¨ Conscientiousness¡ Ordered and persistent

¨ Extraversion¡ Exuberant and sociable

¨ Agreeableness¡ Caring and considerate

¨ Neuroticism¡ Emotional and anxious

9Costa & McCrae, 1992; Goldberg, 1981

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¨ Lexical studies of the dictionary¡ Started with 17,953 trait terms (Allport & Odbert)

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ArtisticCuriousCulturedImaginativeRefinedConventionalCautiousIndustriousOrderlyResponsibleAssertiveEnthusiasticEnergetic

AltruisticCaringModestTenderTrustingAnxiousAngryDepressedSelf-ConsciousVulnerableGregariousWarm

OpennessConscientiousnessExtraversionAgreeablenessNeuroticism

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¨ Factor analysis repeatedly finds five factors¡ Cross-cultural replication¡ Genetic links¡ Cross-species replication

ú e.g., dogs, hyenas, monkeys

11Extraverted chimp Introverted chimp

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Openness

Fantasy Aesthetics Feelings Ideas

Actions Values

Open people remember dreams better, are more creative, and enjoy novel experiences

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Conscientiousness

Competence Order Dutifulness Achievement-striving

Self-Discipline Deliberation

Conscientious people are successful in school and work, and have more stable, committed romantic relationships

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Extraversion

Gregariousness Activity level Assertiveness Warmth

Excitement Seeking

Positive Emotions

Extraverts love social attention and leadership, and are happier

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Agreeableness

Trust Altruism Modesty Compliance

Straight-forwardness

Tender-mindedness

Agreeable people resolve conflicts, are generous, and are well-liked

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Neuroticism

Anxiety Depression Vulnerability Impulsiveness

Self-consciousness

AngryHostility

Neurotic people are highly emotional, have mood swings and instability in relationships, and are more fatigued

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¨ Physical attractiveness and promiscuity¨ Positive evaluation and negative evaluation

¡ “Big 7”¨ Honesty/humility

¡ HEXACO model¨ Religiosity/spirituality

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¨ Extraversion¡ PEN Extraversion

¨ Neuroticism¡ PEN Neuroticism

¨ Agreeableness¡ PEN Psychoticism (low)

¨ Conscientiousness¡ PEN Psychoticism (low)

¨ Openness to Experience¡ PEN?

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¨ By definition, traits are stable dispositions across: ¡ Situations¡ Time

¨ Traits are NOT completely “set like plaster”

211970 & 1980s---------------------------------------------2006

à

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¨ Mean-level change: In a population, people’s average level of a trait at different ages

¨ Are people on average more extraverted when they are younger or older?

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¨ Cross-sectional study¡ Sample of approximately 130,000 adults reported Big

5 personality traits¡ Representative of population in US and Canada¡ Childhood to old age

23Srivastava, John, Gosling, & Potter, 2003

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Lifespan Cross-Sectional Study

2.50

2.70

2.90

3.10

3.30

3.50

3.70

9 to 12 13 to 17 18 to 22 23 to 30 31 to 40 41 to 50 51 to 60 61 to 70 71 to 90

24

E

9-12 13-17 18-22 23-30 31-40 41-50 51-60 61-70 71-80

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Lifespan Cross-Sectional Study

2.50

2.70

2.90

3.10

3.30

3.50

3.70

3.90

4.10

9 to 12 13 to 17 18 to 22 23 to 30 31 to 40 41 to 50 51 to 60 61 to 70 71 to 90

25

E

A

9-12 13-17 18-22 23-30 31-40 41-50 51-60 61-70 71-80

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Lifespan Cross-Sectional Study

2.50

2.70

2.90

3.10

3.30

3.50

3.70

3.90

4.10

9 to 12 13 to 17 18 to 22 23 to 30 31 to 40 41 to 50 51 to 60 61 to 70 71 to 90

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E

A

C

9-12 13-17 18-22 23-30 31-40 41-50 51-60 61-70 71-80

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Lifespan Cross-Sectional Study

2.50

2.70

2.90

3.10

3.30

3.50

3.70

3.90

4.10

9 to 12 13 to 17 18 to 22 23 to 30 31 to 40 41 to 50 51 to 60 61 to 70 71 to 90

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E

A

C

N

9-12 13-17 18-22 23-30 31-40 41-50 51-60 61-70 71-80

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Lifespan Cross-Sectional Study

2.50

2.70

2.90

3.10

3.30

3.50

3.70

3.90

4.10

9 to 12 13 to 17 18 to 22 23 to 30 31 to 40 41 to 50 51 to 60 61 to 70 71 to 90

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E

A

OC

N

9-12 13-17 18-22 23-30 31-40 41-50 51-60 61-70 71-80

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¨ Study compared personality scores at beginning and end of university among 270 students

Two Assessments¡ Year 1 (beginning of first year)¡ Year 4 (end of senior year)

¨ Which traits do you think increased? Decreased?

29Robins, Fraley, Roberts, & Trzesniewski, 2001

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Big Five Dimension Change during universityExtraversion 0Agreeableness +Conscientiousness +Openness +Neuroticism -

Maturity principle: People tend to increase on traits that promote optimal behavior in adult social roles, and decrease on less socially desirable traits

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¨ Mean-level change¨ Rank-order stability

¡ Consistency of individual differences on traits¡ Is the most extraverted child still the most

extraverted adult?¡ Is the least agreeable college student still the least

agreeable 40 year-old?

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¨ Imagine we assess three individuals, A, B, and C, at two times and get the following results:

¨ Has the mean-level changed? Has the rank-order changed?

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Individual Extraversion Level at Time 1

Extraversion Level at Time 2

A 2 3B 3 4C 4 5

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¨ Meta-analysis¡ Compiled results from all studies ever done on

personality change and development¡ Compared “personality consistency” across ages

ú At which ages was the correlation between personality at T1 and personality at T2 highest?

ú Correlation: Same group of people measured at two ages­ e.g., 3 & 4, 23 & 29, 55 & 72­ High correlation implies high personality consistency

33Roberts & DelVecchio, 2000

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0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0-3 3-6 6-12 12-18 18-22 22-29 30-39 40-49 50-59 60-73

Cor

rela

tion

Age Range

Personality Consistency at Different Ages

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Personality is somewhat inconsistent in childhood and young adulthoodPersonality becomes increasingly stable throughout middle agePersonality is extremely stable in old age

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¨ Mean-level¨ Rank-order

¨ Why does personality change or stay stable?

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¨ Person-environment transactions¡ People select situations based on their personalities

ú e.g., a conscientious individual enrolls in an honor’s class¡ Situations in turn influence people’s personalities

ú e.g., an honors student becomes more conscientious

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à à

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¨ How many of you have studied abroad?¨ Why? Was it because of your personality?¨ How did it change who you were?

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¨ 1,134 students tracked across school year¡ Half study abroad, half at home

¨ Who studies abroad?¡ Extraverts

38Zimmerman & Neyer, 2013

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¨ 1,134 students tracked across school year¡ Half study abroad, half at home

¨ How does studying abroad change personality?¡ Increases in openness and agreeableness

39Zimmerman & Neyer, 2013

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Trait High levels of trait leads to

Low levels of trait leads to

O Becoming unemployed

C Getting divorced

E Moving in with partner

A Getting divorced

N Living at homeGetting divorced

Getting married

Sample of ~ 15,000 German adults, followed over four years

Specht, Egloff, & Schmuckle, 2011; 2012

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Trait Events lead to increases in the trait

Events lead to decreases in the trait

O Getting divorced Getting married

C Starting first job Retiring

E Getting married

A Having a baby

N Moving out of parent’s home

Sample of ~ 15,000 German adults, followed over four years

Specht, Egloff, & Schmuckle, 2011; 2012

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¨ Borghuis et al. (Oct. 2017) “Big Five Personality Stability, Change, and Codevelopment Across Adolescence and Early Adulthood. ¡ N = 2230 Dutch adolescents, followed from ~age 12

to 22. ¡ Participants interviewed annually in their homes

about personality and relationship quality. ¡ What kind of design is this? What is the IV? What is

the DV?

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¨ Findings¡ 1 year rank-order stability of Big 5 traits increases up

to mid-adolescence and then level out. ¡ Mean-level changes moderated by gender

ú Males:+O, U shaped curve for C, stable E, +A, stable Nú Females: -O, +C, U shaped curve for E and N, +A

¡ Big individual differences in individual-trait change for E, C, and N.

¡ Individual personality changes unrelated to friends and siblings.

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¨ Personality changes across the lifespan¡ Mean-level shifts

¨ Personality is consistent across the lifespan¡ Different levels of consistency emerge in childhood,

adulthood, and old age¨ Change and consistency is dictated in part by

person-environment transactions¡ Who we are leads us to take on certain roles¡ Our roles in turn shape who we are

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¨ Trait approach (wrap-up)¨ Genetics (begin)

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