Introduction to psychometrics Flashcards
define psychometrics
The measurement of various psychological constructs involving the use of standardized tests, questionnaires, and other assessment tools.
what does psychometrics aim to obtain?
numerical or qualitative data that can be used to evaluate and compare individuals or groups.
what does psychometrics include?
development, application, validation and interpretation of psychological tests.
what is a key goal of psychometrics?
develop reliable and valid measurement tools that can accurately asses psychological constructs of interest
What do psychometrics involve?
manipulation and interpretation of numbers, attention to the design and administration of tests, statistical analysis of resulting data.
what statistical techniques are used in psychometrics?
factor analysis, item response theory, and classical test theory.
what do psychometric statistical techniques aim to do?
asses the reliability and validity of the tests.
what is measurement?
the process of assigning numerical values or scores to objects and events according to rules - done in a systematic way to represent certain properties of the individual.
what is a test?
any measurement device or technique used to quantify behavior -
what do tests aim to do?
help understand and predict behavior
what do psychological tests aim to do?
operationally define and quantify the things it measures.
define ‘psychological measurement’
the measurement of human behavior
what is the term for behavior that is observable?
overt behavior
define covert behavior
mental, social or physical action that is not immediately observable
what is a psychological test?
a test/systematic procedure designed to provide quantitative analysis of a person’s mental capacities or traits, typically as shown by responses to a series of standardized questions or statements (test)
how do we quantify behavior?
through test items
what do test items aim to do?
quantify behavior.
what is a test item?
a specific stimulus to which a person responds overtly - such as test questions, tasks a person must perform, response to a statement etc.