PSYC3042 Lecture Notes - Lecture 9: Kilogram, Internal Validity, Observational Error
Document Summary
Lecture 9 ensuring sensitivity: control techniques to enhance and check a study"s sensitivity to find relationships between independent and dependent variables: only check external validity when the construct validity is okay and when internal validity is okay. Threats to external validity from last lecture. If many people drop out, it means the task is on the extreme spectrum of something and so its probably not applicable to the general population. Lecture 9 - detect and evaluate limitations of external validity. You can ask which group the researcher tests, and what is the discrepancy between that group and those in the general world. Have to identify why these results do not generalise to the real world. *critical in detecting spatial validity in the study. What treatment studies often do is have 2 levels and generalise, which is risky because you cannot characterise the functional relationship between the iv and dv.
