Experimental methods strengths and weaknesses 0.0 / 5 ? PsychologyResearch methods and techniquesA2/A-levelOCR Created by: Emily P-BCreated on: 04-05-17 10:42 Laboratory experiments Strengths Good control of extraneous variables Causal relationships can be determined Strict procedures allow for replication Weaknesses The artificial setting could have low ecological validity Demand characteristics 1 of 3 Field experiments Strengths As participants are in their natural setting their behaviour is likely to be representative Participants could be unaware they're in an experiment reducing demand characteristics Weaknesses Control over extraneous variables is harder reducing reliability The researcher can't be sure the changes in the DV were caused by the IV Ethical issues if participants don't know they're in an experiment 2 of 3 Quasi-experiments Strengths If participants are in their normal setting their behaviour will be natural/representative If participants are unaware they're in a study this will reduce demand characteristics Allows research into things that would be impractical or unethical to manipulate Weaknesses Only possible where natural differences arise Control over extraneous variables can be hard Can't establish causal relationships as the IV is not directly manipulated Harder to replicate 3 of 3
Comments
No comments have yet been made