Task 3 Flashcards
Empirical approach
based solely on the observed, empirical links between the items and some variable that is assumed to be a good indicator of the trait
clear idea which trait should be measures
No obvious link to the trait counteracts fake self-enhancement bias because the participant does not understand what exactly is tested
Steps of empirical approach
Begins by writing many items that together describe a variety of actions, thoughts and feelings (accounts for various characteristics)
Obtains large sample, asks for other information as well to evaluate which questions are appropriate to asses the trait
Criticism on empirical approach
Collecting data from one sample does not guarantee same outcomes in another sample (collect already valid data or take different samples)
The variables are good indicators but it is hard to cover all influences that might be good indicators as well (just use more than one item)
Factor analytical approach
sorting correlated items together into categories (i.e. the same factor) while putting uncorrelated factors into different categories
Factor analytical approach steps
Starts by writing down large pool of questions, and administer it to a large sample
Try to find groups of related items, such that each group measures a different trait
• Variables identified by this technique should be thought of as dimensions along which people differ, and not as types of people
Try to find out which trait is measured by each of the resulting factors and which items clearly belong to each factor.
Criticism on factor analytical approach
Questionnaire inventory has to be large otherwise the outcome is too limited
Loadings (FAA)
when tasks have a large loading it indicates that they are clearly a part of one factor
Steps of Rational approach
Writes items specifically for the purpose of assessing each trait that has to be measured
Which items are the best ones, that are going to be in the final questionnaire
Items are choose on the basis of correlation between each other
• Exception are items that have low correlation but measuring a part of the trait that is not covered sufficient by others
Limitation Rational approach
Scale can only be as good as the set of items that the psychologist had written to measure the traits
The research aim might become too obvious for the participant because of the limited variation across the items
Lexical approach
o Used list: the set of personality descriptive adjectives that can be found in the dictionaries of any language
o Lexical hypothesis: states that people will want to talk about the personality traits that they view as important. So, there is probably a word that describes a certain trait
Do factor analyse and then you should get a full list of trait variables
MMIP
Criticises rational approach and is done by using empirical approach
• Test implemented by military services in several programs to select personnel for positions such as pilots and special services personnel.
• Use for personnel selection diminished in the 70s, because they lacked predictive validity for job-related criteria and discriminated against people.
The big five inventory
o Measure five broad personality characteristics
o Used in personality research
Lexical approach
NEO personality inventory revised and NEO 5factor inventory
o measure five major dimensions of personality
Neuroticism (N), Extraversion (E), Openness to Experience (O), Agreeableness (A), and Conscientiousness (C)
o Based on lexical research
HEXACO
o Measures 6 dimensions of personality
Honesty–Humility (H), Emotionality (E), Extraversion (X), Agreeableness (A), Conscientiousness (C), and Openness to Experience (O)
o Used in personality research
Social desirability scales
o measure a person’s tendency to give socially desirable responses—or socially undesirable responses—to self-report items
o half of the items are reverse coded when in the end they are not similar then the person might be biased