5.1 External validity threats | Quantitative methods | Sampling | UvA

This video discusses different threats to external validity: history threat, setting threat (pretesting and reactivity) and selection threat. You also learn what you can do to reduce these threats to external validity.


This course consists of six modules and each module has several videos. To find the right module, go to our account ‪@researchmethodsandstatisti2134‬ and click on Playlists, or view them below.

MODULE 5: Sampling
5.1 External validity threats:    • 5.1 External validity threats | Quant...  
5.2 Sampling concepts:    • 5.2 Sampling concepts | Quantitative ...  
5.3 Probability sampling:    • 5.3 Probability sampling | Quantitati...  
5.4 Probability sampling - simple random and systematic:    • 5.4 Probability sampling - simple ran...  
5.5 Probability sampling - complex types:    • 5.5 Probability sampling - complex ty...  
5.6 Non-probability sampling:    • 5.6 Non-probability sampling | Quanti...  
5.7 Sampling error:    • 5.7 Sampling error | Quantitative met...  
5.8 Non-sampling error:    • 5.8 Non-sampling error | Quantitative...  
5.9 Sample size:    • 5.9 Sample size | Quantitative method...  


QUANTITATIVE METHODS: MODULES
1. Origins of Science:    • 1.1 Non-scientific methods | Quantita...  
2. The Scientific Method:    • 2.1 The empirical cycle | Quantitativ...  
3. Research Designs:    • Quantitative Methods: Week 3  
4. Measurement:    • Quantitative Methods: Week 4  
5. Sampling:    • Quantitative Methods: Week 5  
6. Practice, Ethics and Integrity:    • Quantitative Methods: Week 6  

Follow our account ‪@researchmethodsandstatisti2134‬ for more modules and courses!