research methods (types of experiments)

Question 1

Lab experiment

Answer 1

Many variables are controlled
pros: High internal validity , replication , states relationship between iv and dv

cons:experimental bias
low external validity
demand characteristics

Question 2

Field experiments

Answer 2

Controlled in a natural setting

i. e school/hospital
- Iv is manipulated by the researcher
pros: Higher ecological validity
cons: Low extraneous variables

Question 3

Natural experiment

Answer 3

change in iv occurs
naturally/not manipulated 
pros:high external validity 
pros:no demand characteristics
 cons:no control over extraneous variables
cons :not replicable

Question 4

quasi experiment

Answer 4

change in the iv cannot be manipulated or randomly assigned i.e male/female , old/young

pros: only way to study these variables
cons: can’t control participant variables