Experimental Design

• What is the main characteristic of an independent groups design in experimental research?

  Participants only perform in one condition of the independent variable (IV).
• What is a strength of using an independent groups design?

  There are no order effects presented.
• How does an independent groups design help with demand characteristics?

  Participants are less likely to guess the aims of the study.
• What is a limitation of the independent groups design related to participant variables?

  There is no control over participant variables, which can cause changes to the dependent variable (DV).
• Why do independent groups designs require more participants than other designs?

  You need more participants to gather the same amount of data.
• How does random allocation address the limitation of participant variables in independent groups design?

  It ensures that each participant has the same chance of being in one condition of the IV as another.
• What are the strengths and limitations of independent groups design in experimental research?

  Strengths:

  • No order effects presented
  • Demand characteristics are eliminated

  
  

  Limitations:

  • No control over participant variables
  • Requires more participants than other designs