Psychometrics
Building and testing valid and reliable psychological measurements
Building and testing valid and reliable psychological measurements
Psychometrics is the science of psychological measurement.
Unlike height or blood pressure, psychological traits like anxiety, gratitude, motivation, and self-esteem cannot be directly observed. Work in psychometrics helps develop and evaluate questionnaires, tests, and other measurement tools that allow researchers to study these hidden psychological traits with confidence.
In the PREPARE Lab, we test whether existing psychological scales measure what they are intended to measure, and whether they work consistently across diverse populations of adolescents and young adults.
This page is currently being developed by our research assistants. Check back soon for a full overview.
Why it Matters!
Most psychological constructs cannot be measured directly
Researchers use observable responses and behaviors to understand traits that cannot be seen directly.
Surveys need testing
A questionnaire should be evaluated before researchers rely on the scores it produces.
Good measurement
Reliable and valid measures help researchers reach trustworthy conclusions.
Different populations
A measure may work differently across cultural, ethnic, or educational groups.
Psychometrics in the PREPARE lab
Before researchers use a psychological questionnaire, they need evidence that it measures the intended construct accurately and consistently. In the PREPARE Lab, we evaluate existing measures of constructs, such as gratitude and mindfulness, to determine whether they perform well with diverse CSU student populations.
A questinnaire that works well in one population may not work the same way in another. Our research examines whether commonly used psychological measures remain reliabel and valid for students from different cultural, ethnic, and educational backgrounds across the CSU system.
Every psychological study depends on the quality of its measurements. By improving the tools researchers use to measure psychological constructs, psychometric research strengthens future reserach into the field, through accuracy, fariness and reproducibility.
Key Concepts
Psychological traits such as anxiety, gratitude, or motivation cannot be observed directly. Instead, researchers carefully designed questionnaires and tests that estimate these hidden characteritics.
A reliable measure produces cosistent results. If a survey gives very different scores under the ame conditions, researchers cannot trust its results
Validity asks a simple but important question: Is this survey actually measuring what it claims to measure?
Before researchers use a questionnaire, they collect evidence to make sure it accurately measures the intende construct and works well with the population being studied.
Factor analysis helps researchers understand how survey questions group together, providing evidence about what a questionnaire is measuring.
This page is currently being developed by our research assistants. Check back soon for a full overview.