Personality Theory and Assessment Flashcards
Personality trait
Differences among individuals in a typical tendency to behave, think, or feel in some conceptually related ways, across a variety if relevant situations and across some fairly long period of time
Strategies for the construction of personality inventories
- Empirical strategy
- Factor-analytic strategy
- Rational strategy
Common personality inventories
- EPQ-R
- NEO-PI-R
- IPIP
Factor analysis
Allows the researcher to reduce many, specific traits into a few general factors
- correlation refers t replaceability
- factor loadings > correlations corrected for unreliability
Lexical hypothesis
The most important aspects of human personality are reflected in the language we use to describe ourselves and others
Lexical approach
Using the dictionary as a source of personality characteristics
Big Five
- Extraversion
- Agreeableness
- Conscientiousness
- Emotional stability
- Openness to experience
Personality Types
- Internalising type
- Externalising type
- Resilient type
Four humours
- Sanguineus (blood)
- Phlegmaticus (phlegm)
- Cholericus (yellow bile)
- Melancholicus (black bile)
Myers-Briggs Type Indicator (MBTI)
- 16 personality types
- 4 dichotomies
- extraversion vs introversion
- sensing vs intuition
- thinking vs feeling
- judging vs perceiving
HEXACO dimensions
H = honesty & humility
E = emotionality
X = extraversion
A = agreeableness
C = conscientiousness
O = openness to experience
Levels of analysis
- universal: entire population
- nomothetic: across groups (generations) and individuals (age)
- idiographic: individual trajectories
Birth cohort
People who are born in approximately the same period of time and share experiences in their formative years
Period effect
Effect of historical circumstances at/during a certain time period
Age effect
People may change as they get older
Issues with cross-sectional data
Age-related changes may be due to cohort effects
Issues with longitudinal data
Age-related changes may be due to period effects
Maturation principle
Personality changes due to changes in interpersonal and occupational functioning
Social Investment Theory
Maturation due to evolution of social role responsibilities
Four humours theory
Early theory on personality
the levels of ‘four humours’ in the body influenced personality:
- blood > sanguine (cheerful)
- black bile > melancholic (depressive)
- yellow bile > choleric (angry)
- phlegm > phlegmatic (calm)
Somatotypes theory
Theory that personality was based on physique
- endomorph (fat)
- mesomorph (muscular)
- ectomorph (thin)
Cloninger’s theory
Certain personality traits were based on the neurotransmitters in the Central Nervous System
- dopamine > novelty seeking
- serotonin > harm avoidance
- norepinephrine > reward dependence
Reinforcement Sensitivity Theory
By Jeffrey Alan Gray
theorised the BIS and BAS systems
BAS: behavioural activation system
- encourages pursuit of rewards
- high score: tendency to be impulsive and seek pleasure and excitement
BIS: behavioural inhibition system
- encourages avoidance of punishment
- high score: tendency to be anxious and avoid pain and danger
Zuckerman’s Model
- Activity
- Sociability
- Impulsive/sensation-seeking
- Aggression
- Neuroticism/anxiety
Single Nucleotide Polymorphism (SNP)
Most common type of genetic variation among people; represent differences in a single DNA building block, called a nucleotide
Heritability
The portion of the total variance of a trait that is explained by genetic differences
- is a population measure, not an individual characteristic
- often changes across age
Methods in behavioural genetic
- selective breeding (not viable in human studies)
- family studies
- adoption studies
- twin studies
Contrast
Answering in a way that emphasises differences
Assimilation
Answering in a way that emphasises similarities
GE correlation
Passive GE correlation: parents do not just pass on their (heritable) reading skills to their children, but also a well-stocked bookcase
Reactive GE correlation: parents use harsh parenting especially on those children that have a genetic disposition for disruptive behaviour
Active GE correlation: also known as ‘niche picking’, musical/sporty children receive more, and better, piano lessons/hockey training than other children
Mental ability: Spearman
- created the idea of a general (g) factor of mental ability/’intelligence’
- invented factor analysis and the correlation coefficient
- found that the tasks involving reasoning had the highest g-loadings
- created several ‘group factors’: verbal, spatial, perceptual, and memory abilities
Mental ability: Thurstone
- believed in the existence of several kinds of mental ability
Found 7 primary factors:
1. verbal fluency
2. verbal comprehension
3. numerical facility
4. spatial visualisation
5. memory
6. perceptual speed
7. reasoning
Flynn effect
Increase in IQ across new generations; in both fluid and crystallised intelligence
- average IQ increases by 3 point per decade
- larger effects in disadvantaged countries
Mental ability: Gardner
“Theory of Multiple Intelligences”
- believed that people had different kinds of intelligences
-critiqued the g factor
- linguistic intelligence
- logical-mathematical intelligence
- spatial intelligence
- musical intelligence
- bodily-kinaesthetic intelligence
- interpersonal intelligence
- intrapersonal intelligence
- naturalistic intelligence
Mental ability: Sternberg
“Triarchic Theory of Intelligence”
- analytic intelligence
- creative intelligence
- practical intelligence
Mental ability
Capacity to solve problems that demand thinking-related skills
Positive manifold
All mental ability tests are strongly correlated with each other, indicating a common latent dimension with a strong influence
International Cognitive Ability Resource
Used for educational and research purposes
Four subtests:
1. Verbal reasoning (VR)
2. Letter and numbers series (LN)
3. Matrix reasoning (MR)
4. 3D rotations (R3D)
Emotional intelligence
The ability to accurately reason about emotions and to adequately use emotions
Dispositional insight
Ability to reason based on personality traits
Encephalisation quotient
Ratio of brain size to body weight > significant, positive correlation between brain size and IQ
Heritability of mental ability
- somewhat lower heritability in less enriched environments
- some variance is non-additive
- womb environment and chorion type explain some variance
Until now, genome-wide complex trait analysis (GCTA) studies cannot account for more than 10% of the variance in mental ability scores