Across
- 3. consistent
- 5. reduce the individual differences
- 7. a different group of participants
- 10. increase or decrease
- 13. due to chance
- 15. repeated measures
- 16. ABBA
- 18. definition of variables
- 19. disguise the aim
Down
- 1. a testable statement
- 2. exactly the same
- 4. questions is fixed
- 6. two researchers
- 7. manipulated
- 8. confounding
- 9. an investigation looking for a causal relationship
- 11. a personal viewpoint
- 12. mundane realism
- 14. written form
- 17. apply