EDKP 443 Lecture Notes - Lecture 9: External Validity, Internal Validity, Selection Bias

• School: McGill University
• Department: Kinesiology and Physical Ed
• Course: EDKP 443
• Professor: Lindsay Duncan

Document Summary

Fundamental towards understanding the difference between a good quality study and a bad quality study. Can identify with confidence if the results of the study are strong. Critical understanding of what makes a study valid. Having a sound basis in logic or fact. Validity of experiments, validity of measurements does this seem reasonable, is there sound logic behind this. Research in lab vs research in life vs somewhere in between. Basic research (in lab) researcher has ability to change a lot of the variables around them. Though it might not have ecological validity if you implement it in the real world. Preventing extraneous variables from affecting the reseach. Generalization and applicability in real world setting. Ge(cid:374)eraliza(cid:271)ility a(cid:374)d appli(cid:272)a(cid:271)ility i(cid:374) (cid:858)real world(cid:859) setti(cid:374)gs. How to ensure a study is valid. Progress from internal validity (large control) to external validity (small control) How strong is merit of external vs internal validity.