What is a reverse$-$scored variable, AND what purpose does it serve? $($See textbook for answer; hint: what types of scales do we reverse scale endpoints $("$reverse$-$score"$)$ a variable for and why? What is a "halo effect"? The index is a great resource in your textbook.$)$

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When you recode a variable using the "into the same variable" option, what happens to the original data values? What purpose do you think the "into different variable recode" option serves?