Single and Double Blind Procedures

• What is a single-blind procedure in research?

  A research method where researchers do not inform participants about their treatment group.
• Why is a single-blind procedure used in research?

  To prevent participants from biasing results by acting according to their expectations.
• What is a double-blind procedure?

  A research method where neither participants nor experimenters know who receives the treatment.
• What is the purpose of a double-blind procedure?

  To prevent bias in research results from both participants and experimenters.
• How do double-blind studies help reduce bias?

  They prevent demand characteristics and the placebo effect from influencing results.
• What is the role of a control group in research?

  To set a baseline for comparing results from the experimental condition.
• How does a control group help researchers draw conclusions?

  It allows researchers to determine if changes in the experimental group are due to the independent variable.
• What can researchers conclude if there is a significantly greater change in the experimental group compared to the control group?

  The cause of the effect was likely the independent variable.
• What are demand characteristics in research?

  Participants' behaviors influenced by their expectations of the study.
• What is the placebo effect?

  The phenomenon where participants experience changes due to their expectations rather than the treatment itself.
• What are investigator effects?

  Unconscious cues given by the researcher that may influence participants' responses.