Psychometric tests

Question 1

Charles Darwin

Answer 1

despite similarities, marked individual differences are normal

Question 2

why are individual differences normal

Answer 2

some of the individual differences are more adaptive than others
- over time the differences lead to more complex, intelligent organisms

Question 3

psychometrics

Answer 3

the field of study concerned with the theory and practice of psychological measurements (intelligence and personality)

Question 4

psuedosciene

Answer 4

according to karl popper- tries to explain the differences in personality
e.g. the shape of someones face giving detail on personality

Question 5

personality

Answer 5

• underpinned traits

- changes over lifespan- very slowly

Question 6

concepts of psychometric tests

Answer 6

• reliability

- validity

Question 7

reliability

Answer 7

the degree to which a test or measure process the same scores when applied in the same circumstances (Nelson, 1997)

Question 8

tests that are accurate would be

Answer 8

measured the same by a different person

Question 9

traits usually change very slowly over time

Answer 9

used to measure personlity

Question 10

types of reliability

Answer 10

internal and external

Question 11

internal

Answer 11

extent to which a measure is consistent within itself

Question 12

external

Answer 12

the extent to which a measure varies from one use to another

Question 13

internal: split half method

Answer 13

measure the extent to which all parts of the test contribute equally to what is being measured

Question 14

external: (2)

Answer 14

test re-test and inner-rater

Question 15

external: test re-test

Answer 15

measures the stability of a test over time

- however some dependent variables are in their nature highly variable

Question 16

external: inter-rater

Answer 16

to the degree to which different rater give consistent estimates of the same behaviour
- two different people using the same scale should get the same answer

Question 17

Validity

Answer 17

degree to which a test of instrument measures what it purports to measure (Thomas and Nelson, 1996)

-does it really measure what you think it measure?

Question 18

Types of validity (2)

Answer 18

• content-related

- criterion-relation

Question 19

validity: content-related

Answer 19

appropriate content

Question 20

validity; criterion-related

Answer 20

relationship to other measures

Question 21

Content related : face validity

Answer 21

does the test appear to test what it aims to test

Question 22

Content related: construct validity

Answer 22

does the test rate to underlying theoretical concepts

Question 23

criterion-related: concurrent validity

Answer 23

does the measure relate to an existing similar measure

Question 24

criterion-related: predictive validity

Answer 24

does the test predict later performance on a related criterion

Question 25

on a dart board if all the darts landed in the same area but not on bulls eye

Answer 25

reliable

not valid

Question 26

on a dart board if all the darts landed all over the board

Answer 26

low reliability

low validity

Question 27

if all the darts land on bulls eye

Answer 27

both reliable and valid