Defining Concepts

ordin al o varia bl e is m e a s ur e d wit h r a n

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Unformatted text preview: n s, TV vi ewin g, e t c. - Ordin al o Varia bl e is m e a s ur e d wit h r a n k or d er e d c a t e g o ri e s Ex a m pl e: r a n k t o p fiv e fav orit e TV s h o w s or r a nk Am eric a n Idol c o n t e s t a n t s , Oly m pic m e d al win n e r s (gold, silv er, bro n z e) - Int e rv al o Varia bl e is m e a s ur e d wit h s u c c e s siv e p oin t s o n a s c al e wit h e q u al i nt e rv als in b e t w e e n t h e m o Int e rv al m e a s ur e s a r e “co n tin u o u s ” v a ri a bl e s Ex a m pl e: m e a s ur e o n im mi gr a tio n p olicy o pinio n; s tr o n gly o p p o s e , s tro n gly favor - Ratio o Int e rv al m e a s ur e m e n t wit h a tr u e, m e a ni n gful z ero p oin t o Ratio measures are “ con tinuous ” variables Example: ti me in seconds, weigh t in lbs, etc. • Measures should: - Capture ariation v ! o Use continuous variables where possible - Address the specific variables in the hypothesis/research question - Minimize order effects - Minimize poten tial o “Social desirability ” effects (especially for self-report measures) o Make yourself look bet ter...
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