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Psychometrics

A test on Psychometrics for psychology
Quiz by CurtisLA
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Last updated: May 31, 2022
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First submittedMay 31, 2022
Times taken2
Average score34.5%
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Question
Answer
What is psychometrics?
The measurement or study of psychological measurement
What is Overt behaviour
Observable behaviour
What is covert behaviour
mental or social action that is not immediately observable
Example of an Individual test
IQ test
Example of a group test
Class test
Three types of Ability tests
Achievement tests, Aptitude tests and Intelligence tests
What does a personality test measure?
Measure typical behaviour and a persons individuality
Who is the Father of Psychology?
Wilhelm Wundt
Who is the Father of modern psychometrics?
Francis Gallon
What book did he write?
Hereditary Genius
Name 3 of Cattells mental tests:
strength of hand, rate of hand movement and weight differentiation
What was Alfred Binnets aim?
Classification
What did he measure
Practical judgement
What does the overall goal provide?
a systematic framework for the project
What is the aim of Content Definition?
to operationally define the construct being measured
Question
Answer
What is Reliability?
consistency in measurement
When is a test reliable?
if it's able to give similar accurate measurements repeatedly
What is a true score?
by taking the average of all an individuals observed scores
What does SEM stand for?
Standard error of measurement
What are the four assumptions of classical test theory?
Each person has a true score, There is always measurement error, the true score of an individual does not change with repeated applications and the distribution of random errors will be the same for everyone.
How is SEM calculated?
How much an observed score differs from the true score, on average
When is a test more reliable?
When there is a larger sample size
What are the four types of Reliability?
Test-retest, Parallel forms, internal consistency and inter-rater
What is test-retest reliability?
when a person completes the same test at two different points in time
What is parallel forms reliability?
When two forms of the same test are administered
What is Internal consistency reliability
When different items in the same test all measure the same thing to the same extent
What does Inter-rater reliability measure?
how consistently 2 or more raters agree on rating someone
What is a satisfactory agreement?
0.4 to 0.75
What are the factors influencing reliability?
Number of items in the test, variability of the sample and extraneous variables
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