Experimental design refers to how participants are allocated to different groups in an experiment. Types of design include repeated measures, independent groups, and matched pairs designs.| Simply Psychology
External validity refers to the extent to which the results of a study can be generalized beyond the specific context of the study to other populations, settings, times, and variables.| Simply Psychology
Extraneous variables are factors other than the independent and dependent variables that may unintentionally influence the results of an experiment. They need to be controlled, minimized, or accounted for through careful experimental design and statistical analysis to avoid confounding the relationship between the independent and dependent variables.| Simply Psychology
The Hawthorne Effect is a psychological phenomenon where individuals improve or modify their behavior in response to their awareness of being observed. This concept is often relevant in research studies, affecting the validity of results due to changes in participants' behavior under observation.| Simply Psychology
The experimental method involves the manipulation of variables to establish cause-and-effect relationships. The key features are controlled methods and the random allocation of participants into controlled and experimental groups.| Simply Psychology