Experiments Flashcards
(12 cards)
Lab experiments description
•Conducted in tightly controlled setting with controlled variables
•Conducted in an artificial setting
Advantages of lab experiments
•Controlled variables so higher validity
•experimenters can repeat the study due to controlled setting and so reliability increases
•Can show cause and effect as you know what has changed (IV) and so that would have effected result (DV)
disadvantages of lab experiments
•Controlled artificial setting so lacks ecological validity and can’t be generalised to real life
•Participants are aware they are in experiment so may show demand characteristics (guess aim on experiment) which lowers the reliability and validity of the experiment
Feild experiment description
•Research is conducted in real world in a natural setting
•IV is still controlled but extraneous variables can’t be controlled (outer not relevant sources)
Feild experiment advantages
•Conducted in real world so higher ecological validity so more reliable
•Can show cause and effect as IV is still controlled and directly changed
•Participants may not know they are in experiment so less demand characteristics are shown
Field experiment disadvantages
•as in natural setting researcher may not have full control over variables so less validity (extraneous or confounding variables)
•issues with consent if participants don’t know they are in an experiment lacks informed consent
Natural experiment description
•IV can’t be manipulated often for ethical reasons so researcher takes advantage of naturally occurring events ( eg exploring effects of trauma on remembering events, unethical to expose someone to trauma but if someone’s already going through trauma the researcher takes advantage of it)
Natural experiment advantages
•possible to study unethical topics
Natural experiment disadvantage
•event happens naturally hard to say if event caused outcome could be extraneous other variables which effected outcome
Quasi experiment description
•naturally occurring IV which already exists and is different between people such as gender age etc
Quasi experiment advantages
• controlled setting higher valididtily
Quasi experiment disadvantages
•hard to establish cause and effect as IV not directly manipulated
•may be confounding variables (eg areas participant lives in)