Quasi Experiment

Quasi-experiment

An experiment that lacks random allocation of participants to groups but is similar to a true experiment in most other ways.

Lack of random allocation

Refers to the inability to randomly assign participants to experimental groups, often due to the nature of the variable being studied.

Examples of quasi-experiments

Studies comparing groups such as those with different personality types or individuals with a psychological disorder versus those without.

True experiment

A study that allows for the researcher to have full control over variables and the ability to randomly allocate participants.

Key difference between quasi-experiments and lab experiments

While quasi-experiments lack random allocation, they can still take place in a controlled laboratory setting.