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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