PR2 Exercise 1

True experimental and _________ research are the two types of experimental research.

___________ selection of subjects happens in true experimental research;

____________ selection occurs in a quasi-experimental research.

If the study happens in a place surrounded by walls, it is a ________________ research,

but if it is outside, it is a ____________ research.

Actually, the only thing that makes the two types differ from each other is the __________ of selecting the subjects.

If the selection is randomized, it is definitely a research.

Data collected by the researcher himself is called ______________

Phone, e-mail, questionnaire are some of the data gathering _____________.

Secret identity of the subject is essential for the purpose of ______________.