Likert scale

Borg scale – Scale of perceived exertion

Bogardus social distance scale – Scale measuring a person's willingness to engage with various types of people

Diamond of opposites – Plot used in psychodrama groups

Discan scale – Scale and method in clinical psychology

K-factor – Standardized psychometric measure of psychopathology and personality

Guttman scale – Single, ordinal psychometric scale, allowing original observations to be reproduced.

Ipsative – Attribute of a survey scoring scale

Phrase completion scales – Psychometric scale used in questionnaires

Questionnaire – Series of questions for gathering information

Questionnaire construction – Design of a questionnaire to gather statistically useful information about a given topic

Rating scale – Type of informational measurement scale

Rating sites – Websites allowing users to rate people, content, or other things.

Rosenberg self-esteem scale – Self-report questionnaire

Satisficing – Cognitive heuristic of searching for an acceptable decision

Semantic differential – Empirical method used in Linguistics

Thurstone scale – First formal technique to measure an attitude

Voting system – Method by which voters make a choice between options