True Experimental Design Definition. This lesson explains the details of experimental design such as different types of. A true experimental design is one in which the researcher manipulates the Independent Variable or variables to observe its effect on some behavior or cognitive process the dependent variable while using random assignment of participants to groups in order to control external factors from influencing the results.
Thus true experiments have often been erroneously identified as laboratory studies. In quasi experimental research the researcher does not randomly assign subjects to treatment and control groups. A true experiment is also thought to be the only experimental design that can establish cause and effect relationships 3.
True Experimental Design True experimental design makes up for the shortcomings of the two designs previously discussed.
This is because a true experiment supports or refutes a hypothesis using statistical analysis. Thus true experiments have often been erroneously identified as laboratory studies. A type of experimental design where the researcher randomly assigns test units and treatments to the experimental groups. True experimental research relies on statistical analysis to prove or disprove a hypothesis making it the most accurate form of research.
