1. Explain how lack of inter-observer/inter-rater reliability can lower the internal validity of a study. 2. In the following list, identify which factors can be used only as a quasi-independent...

1. Explain how lack of inter-observer/inter-rater reliability can lower the internal validity of a study.

2. In the following list, identify which factors can be used only as a quasi-independent variable (not a true independent variable) in a study:

·         age of subject

·         subject’s mood

·         subject’s height

·         time to complete a task.