Cerasa et al. (2017) were interested in comparing chefs and non-chefs. Which type of research design did they use and why? Experimental Design; they were able to randomly assign their participants. Experimental Design; they were unable to randomly assign their participants. O Correlational or Quasi-Experimental Design; they were able to randomly assign their participants. Correlational or Quasi-Experimental Design; they were unable to randomly assign their participants.