Task: Text Categorization
Input (English): Question: What is the characteristic of the quasi-experimental research strategy that differentiates it from the experimental strategy ?: 
 Options:  <0> Single or very small cases are studied. <1> The study is carried out in simulated contexts. <2> There is no random assignment of participants to the different study conditions. <3> Several dependent variables are used. <4> It is done with samples of participants obtained by probabilistic sampling.
Output (English): psychology