PSY230H5 Lecture Notes - Lecture 3: Convergent Validity
Document Summary
A and b are just things weve measured. The r says they are related and by how much the arrow (p1) from a to b says a causes b (and vice versa (p2)) C is an unobserved factor (wasn t measured) that can cause a (p3) or b (p4) Found a -. 23 correlation could be explained by a third variable like gender (just for example). So you should do an experiment to test for it. So we did a measure using a survey to fio how many guys and girls in the class. Found a correlation of . 4 to height and -. 6 to hair length thus it should add up to -. 24. which it did so for this class it is sufficient that gender was the explanation. If it measures what its meant to measure. (scale is valid measure of weight but not height)
