designs

Question 1

strength of independent

Answer 1

• no demand characteristics as conditions can’t be compared as participants take part in only 1 condition and less likely to guess aim of study
• order effects like boredom, practice avoided as participants take part in only 1 condition

Question 2

weakness of independent

Answer 2

• ppt variables can become confounding variables as different people used in every condition and can reduce reliability.
• you need to gather twice as many people, making the process time consuming and uneconomical

Question 3

matched pairs

Answer 3

matching every subject in one to a similar person in another group

Question 4

strengths of matched

Answer 4

• ppt variables controlled as they are paired on similar traits
• no demand characteristics as ppt take part in only 1 condition so aim not likely to be guessed

Question 5

weakness of matched

Answer 5

• if 1 person drops out their pair needs to do too and can be expensive if they need to b replaced so less economical
• matching subjects are time consuming as close matches hard to find so less effective

Question 6

strengths of counterbalancing

Answer 6

• reduced participant variables and becomes a control as same participants used in both conditions
• fewer participants make it economical as ppt in both conditions

Question 7

weakness of counterbalancing

Answer 7

• order effects present as ppt do both conditions
• demand characteristics happen as the person can guess the aim of the study and there can be social desirability