The Classical Experimental Design Involves. The classical experimental design has five components random assignment a control group an experimental group a pretest and posttest for each group. According to Babbie in both the natural and the social sciences the most conventional type of experiment involves three major pairs of components 1 independent and dependent variables.
The outcome measurements on the experimental units - the response variables. Randomized experimental designs provide the highest levels of causal validity. In abstract terms this means the relationship between a certain action X which alone creates the effect Y.
Quasiexperimental designs have a number of potential threats to their causal validity.
Sep 28 2016 Classical Experimental Design. The classical experimental design has five components random assignment a control group an experimental group a pretest and posttest for each group. Ebos3 Lynn Hlatky2 Philip Hahnfeldt2 1Inria Bordeaux Sud-Ouest Institut de Mathematiques de Bordeaux Bordeaux France 2Center of Cancer Systems Biology GRI Tufts University School of Medicine. The classical experiment is an artificial setting constructed so that subjects are randomly assigned to experimental and control conditions and all conditions are held constant except for one the experimental condition.
