Experimental design

• What is the relationship between participant samples and independent variables in experimental design?

  They are used in combination to set up the experiment
• What is a repeated measures design?

  All participants complete both conditions of the experiment
• What is the data collected in a repeated measures design called?

  Related data
• What is a potential issue with independent groups design?

  Participant variables may influence the results
• How could participant variables affect a study on temperature and reaction times?

  If younger participants are assigned to one condition, it may skew results
• What is a repeated measures design's main advantage over independent groups design?

  It eliminates the influence of participant variables
• What are order effects in repeated measures design?

  Changes in performance due to practice or fatigue
• How can order effects be controlled in repeated measures design?

  By using counterbalancing
• What does counterbalancing involve?

  Half the participants do condition A then B, and the other half do B then A
• What is a disadvantage of independent groups design compared to repeated measures design?

  It requires more participants to produce the same amount of data
• What is a disadvantage of repeated measures design?

  Participants may guess the aims of the experiment and change their behavior
• How do the strengths of one experimental design often relate to the weaknesses of another?

  The strengths of repeated measures design counteract the weaknesses of independent groups design and vice versa
• What is a matched pairs design?

  Two separate groups are used, matched on a characteristic that may influence results
• What characteristic might researchers match participants on in a matched pairs design?

  IQ, age, or aggression levels
• How are participants assigned in a matched pairs design?

  Participants are ranked and then assigned to separate conditions
• What is the data comparison method in matched pairs design?

  Results of each pair in each condition are compared as related data
• What are the disadvantages of matched pairs design?

  It takes longer to set up and requires more participants
• What is the main purpose of the tutorial videos mentioned in the outro?

  To provide worked examples and exam tips for research methods
• Who can access the additional resources mentioned in the outro?

  Patrons at the neuron level and above
• What is the website mentioned for accessing more resources?

  psychboost.com
• What is the significance of the support from patrons mentioned in the outro?

  It allows the creator to teach part-time and produce content for everyone
• What is the final topic mentioned that will be covered in the next video?

  Variables