Types of experiments

• What do lab experiments involve?

  Artificially controlled environments with staged conditions
• What is the purpose of manipulating variables in lab experiments?

  To discover cause and effect relationships
• What is meant by internal validity in lab experiments?

  It indicates the experiment's scientific soundness
• What are the drawbacks of lab experiments?

  They can be reductionist and have demand characteristics
• Where are field experiments conducted?

  In a natural environment
• What is a key advantage of field experiments?

  They promote natural behavior
• What are the limitations of field experiments?

  Not all extraneous variables can be controlled
• What ethical issue may arise in field experiments?

  Lack of informed consent
• What characterizes natural experiments?

  They occur in a natural environment without manipulation
• What are the limitations of natural experiments?

  Difficulty in randomly assigning participants
• How do natural experiments differ from lab experiments?

  Natural experiments lack manipulation of variables
• What is a common challenge in natural experiments?

  Controlling extraneous variables is difficult