The essential trait approach continued Flashcards
what does the ETA attempt to do?
reduce large numbers of traits to a few traits that are essential to understanding personality
what important Qs remain?
What traits are basic or essential to personality?
How many essential traits are there?
the debate continues
Underpinned by psychometric theory and factor analysis.
Further complicated because the labelling of traits is subjective.
- Similar traits have been given different labels by different theorists (e.g., neuroticism and emotional stability usually refer to the same trait).
- Therefore, we need to look for the meaning that underlies a trait, rather than simply looking at its name.
ETA - Raymond Cattell (1961)
16 source traits, including:
intelligence, stability and friendliness.
ETA - Eysenck (1947, 1986)
essential traits:
extraversion; neuroticism and psychoticism.
ETA - big 5 - Macrae and Costa (1987)
Openness, Conscientiousness, Extraversion, Agreeableness, Neuroticism (also called negative emotionality)
similarities between Eysenck and Cattell
Placing great importance on biological and genetic factors.
Both adopted a nomethetic approach and emphasised the scientific discovery and measurement of psychological traits rather than using clinical methodology.
Both used factor analysis to arrive at their theories but they used it in different ways
Cattell used oblique rotation and Eysenck used orthogonal rotation.
Both theorists were primarily concerned with explaining the personality of “normal” adults.
differences - Cattell
primary factors: source traits
data driven - inductive
oblique rotation - factors can be correlated with each other.
differences - Eysenck
second-order factors: ‘supertraits’ – does extra analysis.
theory driven - deductive
orthogonal rotation - factors are not correlated, they are independent of each other.
Eysenck (1916-1997)
Eysenck’s theory emphasises three second-order factors called supertraits - derived from intercorrelations between source traits.
Supertraits are genetically determined.
Focused on temperament (what we’re born with) - the emotional, motivational and non ability related cognitive aspects of behaviour.
Eysenck hierarchical model of personality
Hierarchical structure - super-traits are broad traits that subsume a large number of source or narrow traits.
Extraversion vs Introversion
high extroversion = low levels of cortical arousal
Neuroticism vs Emotional stability
high levels of neuroticism = excessive activity of the autonomic nervous system.
Psychoticism
A tendency towards psychotic/sociopathic behaviour
Eysenck and E
includes Cattell’s factors of social boldness and privateness
Introvert - shy, quiet, enjoys solitude.
Extravert – outgoing, loud, sociable, enjoys social gatherings.
Can be deceptive
what does E-I result from?
the balance of “inhibition” and “excitation” in the brain itself.
- Ascending Reticular Activating System (ARAS) structure in brainstem controls overall cortical arousal. ARAS acts as gate to arousal.
high E
believed to have low levels of cortical arousal.
- Extraverts: Lower levels of activity in the ARAS.
- The ARAS system of the extravert allows too little arousal in. Therefore, extraverts seek out contexts with high stimulation
high I
believed to have high levels of cortical arousal.
- Introverts: Higher levels of activity in the ARAS
- Introverts’ ARAS allows too much arousal in. Therefore, introverts seek out contexts with low stimulation