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6. matching on variable e.g. age gender- guarantees ps in diff conditions have more or less same characteristics

  • matching ps
  • random allocation

7. sampling where ps recruited via word of mouth

  • random
  • snowball
  • quota
  • systematic

8. sampling where randomly recruit ps to sub categories

  • snowball
  • quota
  • stratified
  • random

9. experiment not manipulated by researcher in any way

  • naturalistic
  • quasi
  • lab
  • field

10. the variable manipulated/changed

  • extraneous
  • independent
  • dependent
  • confounding

11. any property/characteristic of event, object or person that may have diff values at diff times

  • dependent variable
  • variables
  • independent variable

12. natural setting, not well controlled, high ecological validity

  • lab
  • quasi
  • field
  • natrualistic

13. desgin which measures changes in ps over a period of time

  • longitudinal
  • sequential
  • cross sectional

14. data where can put scores in order of increasing magnitude

  • ratio
  • interval
  • nominal
  • ordinal

15. design that measures changes in ps over time and ps at different ages at the same time point

  • longitudinal
  • sequential
  • cross sectional

16. increases liklihood that ps in diff conditions have more or less same charactersitcis

  • random allocation
  • matching ps

17. specific types of extraneous variable related to the variable interested in

  • confounding
  • extraneous
  • dependent
  • independent

18. measures relationships between variables- cannot imply causation

  • quasi
  • correlation
  • field
  • lab

19. the variable measured

  • extraneous
  • confounding
  • dependent
  • independent

20. data on some sort of scale ie ratings

  • interval
  • ordinal
  • ratio
  • nominal