Types of Experiment:
Laboratory –
All/many variables are controlled, standard procedures
Pros: control of extraneous variables (so high external validity), replication
(other researchers can repeat, so finding should be highly reliable), can state
relationship between IV and DV (direct cause and effect)
Cons: experimenter bias, low external validity, demand characteristics
Field –
Conducted in a natural setting, IV is manipulated by researcher
Pros: higher ecological validity, findings more generalisable to real life
Cons: low control over extraneous variables
Natural –
Change in IV occurs naturally/not manipulated
Pros: very high external validity, no demand characteristics
Cons: no control over extraneous variables, not replicable
Quazi –
Change in the IV cannot be manipulated or randomly assigned ie. male/female
Pros: only way to study these variables
Cons: cannot control participant variables
Laboratory –
All/many variables are controlled, standard procedures
Pros: control of extraneous variables (so high external validity), replication
(other researchers can repeat, so finding should be highly reliable), can state
relationship between IV and DV (direct cause and effect)
Cons: experimenter bias, low external validity, demand characteristics
Field –
Conducted in a natural setting, IV is manipulated by researcher
Pros: higher ecological validity, findings more generalisable to real life
Cons: low control over extraneous variables
Natural –
Change in IV occurs naturally/not manipulated
Pros: very high external validity, no demand characteristics
Cons: no control over extraneous variables, not replicable
Quazi –
Change in the IV cannot be manipulated or randomly assigned ie. male/female
Pros: only way to study these variables
Cons: cannot control participant variables
