demand characteristics + investigator effects

Question 1

what are demand characteristics?

Answer 1

act in a way think researcher wants

Question 2

how to reduce demand characteristics?

Answer 2

single blind procedure= p’s no idea which condition they are in

Question 3

what are investigator effects?

Answer 3

any effects of researchers behaviour that influences the research outcome

Question 4

examples of investigator effects

Answer 4

• gender
• age
• ethnicity/race
• tone
• location

Question 5

how to reduce investigator effects

Answer 5

double blind procedure= both p and investigator dont know which study in
this prevents investigator from inadvertently giving p’s clues

Question 6

what are pilot studies?

Answer 6

• small scale ‘practice’ investigation where check all aspects of investigation

Question 7

purpose of pilot studies

Answer 7

• allows to make changes to design, method, analysis
• p’s can suggest appropriate changes to be made
• improve quality and help avoid unnecessary work, saving time and effort