Methods of Enquiry in Psychology — Psychology STD 11 Humanities — Question

Quasi experiments are conducted under completely natural settings when the event has already taken place but its consequences still persist.
Here the independent variable is selected rather than varied or manipulated.
Experimental and control group naturally occur rather created.
For example: After the Tsunami tragedy many psychologists went to study the after-effects of this disaster on the people living there.
Advantages:

• It is conducted where variables cannot be manipulated.
• External validity is high.

Limitations:

• They lack the high degree of control over extraneous variables.
• Random assignment is not possible.
• Weak cause-effect relationship.