hey! how are you? my name is maria, 19 years old. yesterday broke up with a guy, looking for casual sex.
write me here and i will give you my phone number - **
my nickname - lovely
experimental research this is an experiment where the researcher manipulates one variable, and control/randomizes the rest of the variables. it has a control group, the subjects have been randomly assigned between the groups, and the researcher only tests one effect at a time.