Differential Psychology Flashcards
What does it mean to measure something?
It means to quantify some characteristic of that thing
What are the three different things we measure in psychology?
physical - actual movement of perception
behavioural - how people react in a given situation
psychological -things going on in the head
What is the criteria of good measurement?
- want our measures to be free from bias
- all measurement has error associated with it
- error is evenly distributed
- measure should have the same meaning regardless of who or what we apply it to
What are traits?
Traits are:
- possessed by individuals
- what differentiate individuals
- stable over time
What are psychological traits often seen as?
Often seen as hypothetical constructs
What are physical traits measured on?
They are measured on a ratio scale where each unit meant the same thing.
What are the five things you can look at to determine how good your measure is?
1- criterion validity 2- internal consistency 3- retest reliability 4- freedom from bias 5- measurement invariance
What tests do we use to measure intelligence?
IQ tests, Aptitude tests, ability tests
What instruments do we use to measure intelligence?
Stanford-Binet Intelligence test, Wechsler’s Adult Intelligence scale, Wechsler Intelligence Scale for children, Army Alpha and Beta, Cattell’s Culture Fair Test, Raven’s Progressive Matrices, Scholastic Aptitude Test
What are the biases in IQ tests?
Some items are more easily answered by one group despite their being no IQ difference.
What is the difference between types versus traits?
Difference is whether people are classified as one thing versus another or whether you are looking at a continuum where someone is just higher or lower on some uniform dimension
There are three types of personality traits. What are they?
1- projective
2- objective
⤢ ⤡
empirical theoretical/factor analytic
How are objective tests designed?
They are empirically designed
What does the nomothetic approach do?
It provides a way to categorize using theory or observations and analyse data and see what happens
What are the three types of data analysis?
1- principal components analysis
2- factor analysis
3- cluster analysis
What is one issue for factor analysis?
There’s no way to tell for certain how many factors you have
What are the five factors in the Five Factor Model?
O, C, E, A and N
openness | conscientiousness | extraversion | agreeableness | neuroticism
What does the standard model of social science test for?
Typically tests for associations between some environmental exposure and behaviour (or outcome)
What is a problem with the standard model of social science test?
Often missing random assignments and control groups
What is meiosis the basis of? and what is it responsible for?
It is the basis of sexual reproduction and is responsible for genetic diversity