4. Psychometrics, traits and types

Question 1

define psychometrics

Answer 1

the field of study concerned with the theory and technique of psychological measurement

Question 2

what is classical test theory

Answer 2

assumes that each person has a true score, T, that would be obtained if there were no errors in measurement
:. although error is an inherent part of measurement

Question 3

what can be responsible for error

Answer 3

misunderstandings, distractions, moods, time pressure

Question 4

define reliability

Answer 4

how consistent and dependable the measure is

Question 5

what is test-retest reliability

Answer 5

does the same measurement give us the same result each ime

Question 6

what is internal consistency

Answer 6

are these different measures reflecting the same underlying thing

Question 7

what is inter-rater reliability

Answer 7

is there agreement in measurement

Question 8

define validity

Answer 8

does this actually measure what its supposed to measure

Question 9

name three types of validity

Answer 9

face validity. ecological validity. predictive validity

Question 10

describe face validity

Answer 10

how much does it appear to be a legitimate measure at face value

Question 11

what is the great trait debate

Answer 11

should personality best be understood as types or dimensions

Question 12

how would u describe the types aspect of the great trait debate

Answer 12

person centred- the person is “either/or” there is no middleground

Question 13

how would u describe dimensional personality traits

Answer 13

traits are on a continuous spectrum, for example levels of extraversion

Question 14

what do studies find in the great trait debate

Answer 14

dimensional personality traits are more accurate- greater stability and better at predicting outcomes, defining a person by a few extremes is not always useful