A research experiment is a scientific investigation that involves manipulating an independent variable to observe its effect on a dependent variable, while controlling for other variables. It aims to establish cause-and-effect relationships between variables.
A control group is the group in an experiment that does not receive the experimental treatment or manipulation. It serves as a baseline for comparison with the experimental group.
The dependent variable is the outcome or response that is measured in an experiment and is expected to be influenced by changes in the independent variable.