By Gordon Rugg
Treating liking and disliking as opposite ends of the same scale looks so obvious that few people ever think about it. They’ve been viewed as opposites since at least Classical times, when Catullus wrote about the paradox of loving and hating the same person. However, this approach doesn’t actually work very well when you try applying it systematically in contexts like surveys or evaluation or market research. There are usually pros and cons that you’re asking the respondent to compress down into a single number, and respondents usually don’t look very happy about it.
So what happens if you instead try treating liking and disliking as two separate scales? The answer is that it gives you a lot of powerful new insights, because liking and disliking are often not opposites.