Semantic scale, also known as semantic differential or Osgood scale (from the name of it creator - American psychologist Charlesa E. Osgood, 1916-1991) is commonly used for evaluation of attitudes, products or services.
Scale is made of few points usually 5 or 7. Points can be labeled with numbers and extreme points are described with two bipolar adjectives - antonyms (f.e. good - bad, easy - difficult, interesting - boring, cheap - expensive, ...)
Example 1, Semantic scale with labels
What is your opinion about product X?
Example 2, Semantic scale without labels
What is your opinion about product X?
