What type of research compares naturally formed or preexisting groups rather than employing random assignment to conditions?

A) quasi-experimental research
B) survey research
C) observational research
D) archival research

Quasi-experimental Research

A research method that seeks to establish a cause-and-effect relationship, without the full control or random assignment found in true experimental designs.

Preexisting Groups

Groups that have been formed before the implementation of a study, not generated by random assignment or manipulation by the researcher.

Random Assignment

A method of assigning individuals or units to different groups in an experiment using randomization to ensure every participant has an equal chance of being placed in any group.