natural experiment

• natural experiment is similar to laboratory and field experiments and the researcher measures the effect of the independent variable on the dependent variable. The researcher has n o control over the independent variable so it can vary from person to person.
• natural experiment Strengths:

  Provided opportunities for research that may not be undertaken due to ethical reasons.

  Have high external validity.

  Limitations: 

  It may rarely ever happen, so lack of opportunities.

  Participants are unable to be randomly allocated due to unethical reasons.

  It can be conducted within a lab so it lacks realism