What are research methods?
Ways psychologists collect and analyse data.
What is an experiment?
A study where the IV is changed to measure the DV.
What are IV and DV?
IV: what is changed
DV: what is measured
Name the three types
Lab, field, and natural experiments.
What is a hypothesis and null hypothesis?
Hypothesis: testable prediction
Null: no effect or difference
What does operationalise mean?
Clearly saying how variables are measured or changed.
What is sampling? Name two types.
How participants are chosen; random or opportunity.
Name two ethical issues.
Informed consent and protection from harm (plus debriefing).
What do reliability and validity mean?
Reliability: consistent results
Validity: measures what it should
What is quantitative vs qualitative data?
Quantitative: numbers
Qualitative: descriptions
What is correlation?
A relationship between variables (not cause and effect).
Positive vs negative correlation?
Positive: both increase
Negative: one increases, one decreases
