But what is internal validity in scientific terms? The internal validity definition indicates a trustworthy cause-and-effect relationship between the variables within a study.

Internal Validity Definition in Psychology In psychological research, validity is the extent to which a researcher is able to measure a specific idea or concept.

Explore the differences between internal vs. external validity. Learn how the requirements are important to scientific study and how replication works in research.

In research, the strength of the relationship between the dependent and independent variables can be affected by threats to internal validity. Explore threats such as maturation, which can be ...

When conducting research to show the effectiveness of a treatment, threats to internal validity can weaken the experiment's conclusions. Understand three of these threats -- history, subject ...

Learn the definition, importance, and examples of internal validity in research in just 5 minutes. Watch now and test your knowledge by taking an optional quiz.

Clarify the difference between internal and external validity in research. Our engaging 5-minute video includes examples and a quiz to test your understanding.

Internal validity, which is the assertion that the independent variable is what truly caused the observed effect, is paramount to conclusive research. Explore the concept of both internal and ...

Master what internal validity is in psychology with this video. See why Study.com has hundreds of 5-star reviews after learning about its examples and threats.

Validity: In research, validity describes how accurately something is measured. Validity is necessary to ensure that the results of a study are accurate and that the results can be generalized to the greater …