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What is an 'aim' during an experiment?
What should an aim be able to outline?
What is a 'hypothesis' and the two types?
Define what a 'directional hypothesis' is.
Define what a 'non-directional' hypothesis.
What are the different variables?
What are co-variables?
What are extraneous variables?
What is operationalisation?
What are the three types of hypothesis the exam board may mention?
What is a confounding variable?
Name four different methods of controlling the effects of extraneous variables.
What is random allocation?
Define the purpose of counter balancing.
What is randomisation?
What is standardisation?
What are investigator effects?
What are demand characteristics?
Define what a pilot study is.
How do researchers control unwanted effects?
What is a single blind study?
Define what a double blind study is?
What could an investigator be tempted to do without a double blind trial?
Why may an investigator be tempted to make a participant aware of the condition they're in?
What is 'population' and how does it relate to a 'sample'?
What is the RANDOM sampling technique?
Evaluate the RANDOM sampling technique.
What is the SYSTEMATIC sampling technique?
Evaluate the SYSTEMATIC sampling technique.
Define the STRATIFIED sampling technique.
Evaluate the STRATIFIED sampling technique.
Define the OPPORTUNITY sampling technique.
Evaluate the OPPORTUNITY sampling technique.
What is the VOLUNTEER sampling technique?
Evaluate the VOLUNTEER sampling technique.
What are the two types of data?
What is quantitative data?
Positively evaluate quantitative data.
List the weaknesses of quantitative data.
What is qualitative data?
List positive evaluations for qualitative data.
List negative evaluations for qualitative data.
Define primary data.
Evaluate primary data (3).
What is secondary data?
Evaluate secondary data.
