04:56duration 4 minutes 56 seconds
5.1 External validity threats | Quantitative…
5.1 External validity threats | Quantitative methods | Sampling | UvA
This video discusses different threats to…
05:03duration 5 minutes 3 seconds
2.7 Internal validity threats - artificiality |…
2.7 Internal validity threats - artificiality | Quantitative methods | The Scientific Method | UvA
In this video you learn about another category of…