test

3. a statistical measure representing the strength and direction of a relationship
4. a research design that observes behaviour in a natural environment
8. a detailed set of instructions for how variables will be measured
9. a research method that involves manipulating variables in a controlled setting
12. bias introduced by participants attempting to guess the study’s purpose
14. a variable that is deliberately manipulated by the researcher
15. a prediction derived from a theory that can be tested

1. the consistency of a measurement or test
2. a small‑scale trial run conducted to test study procedures
5. a research method involving an intensive verbal exchange with participants
6. a research method in which neither participants nor researchers know the condition allocation
7. a research method focused on in‑depth examination of a single individual or group
10. the variable that is measured for change
11. the degree to which a test measures what it claims to measure
13. a sampling technique where every member of the population has an equal chance of selection