experimental research designs Flashcards
1
Q
classic experimental design
A
- DV measured before and after intervention
- control group
2
Q
classic experimental design
positive
A
+ internal validity
3
Q
control group
A
- accounts for change in DV
- placebo affect
4
Q
control group composition
A
randomly assinged or matched on similar characteristics to have equivalence
5
Q
external validity
definition
A
extent results can be generalised to the general population
6
Q
problems with external validitiy
A
- randomisation can be difficult ot achieve
- volunteer bias
- ‘Hawthorne effect’ reactive being observed
7
Q
feild experiments positives
A
+ improves external validity
+ sample is repersentitve
+ greater mundane realism
8
Q
quasi- experiment
definition
A
naturally occuring IV e.g gender, age
