Semantic differential
Encyclopedia
Semantic differential is a type of a rating scale designed to measure the connotative meaning
Connotation
A connotation is a commonly understood subjective cultural or emotional association that some word or phrase carries, in addition to the word's or phrase's explicit or literal meaning, which is its denotation....

 of objects, events, and concepts. The connotations are used to derive the attitude
Attitude (psychology)
An attitude is a hypothetical construct that represents an individual's degree of like or dislike for something. Attitudes are generally positive or negative views of a person, place, thing, or event— this is often referred to as the attitude object...

 towards the given object, event or concept.

Semantic differential

Osgood's semantic differential was designed to measure the connotative meaning of concepts. The respondent is asked to choose where his or her position lies, on a scale between two bipolar adjectives (for example: "Adequate-Inadequate", "Good-Evil" or "Valuable-Worthless"). Semantic differentials can be used to describe not only persons, but also the connotative meaning of abstract concepts—a capacity used extensively in affect control theory
Affect control theory
In control theory affect control theory proposes that individuals maintain affective meanings through their actions and interpretations of events...

.

Nominalists and realists

Theoretical underpinnings of Charles E. Osgood
Charles E. Osgood
Charles Egerton Osgood was a distinguished American psychologist who developed a technique for measuring the connotative meaning of concepts, known as the semantic differential.-Career:...

's semantic differential have roots in the medieval controversy between the nominalists and realist
Philosophical realism
Contemporary philosophical realism is the belief that our reality, or some aspect of it, is ontologically independent of our conceptual schemes, linguistic practices, beliefs, etc....

s. Nominalists asserted that only real things are entities and that abstractions from these entities, called universals, are mere words. The realists held that universals have an independent objective existence either in a realm of their own or in the mind of God. Osgood’s theoretical work also bears affinity to linguistics
Linguistics
Linguistics is the scientific study of human language. Linguistics can be broadly broken into three categories or subfields of study: language form, language meaning, and language in context....

 and general semantics
General Semantics
General semantics is a program begun in the 1920's that seeks to regulate the evaluative operations performed in the human brain. After partial program launches under the trial names "human engineering" and "humanology," Polish-American originator Alfred Korzybski fully launched the program as...

 and relates to Korzybski's structural differential
Structural differential
The Structural differential is a physical chart or three-dimensional model illustrating the abstracting processes of the human nervous system. In one form, it looks like a pegboard with tags. Created by Alfred Korzybski, and awarded a U.S. patent on May 26, 1925, it is used as a training device in...

.

Use of adjectives

The development of this instrument provides an interesting insight into the border area between linguistics and psychology. People have been describing each other since they developed the ability to speak. Most adjectives can also be used as personality descriptors. The occurrence of thousands of adjectives in English is an attestation of the subtleties in descriptions of persons and their behavior available to speakers of English. Roget's Thesaurus
Roget's Thesaurus
Roget's Thesaurus is a widely-used English language thesaurus, created by Dr. Peter Mark Roget in 1805 and released to the public on 29 April 1852. The original edition had 15,000 words, and each new edition has been larger...

 is an early attempt to classify most adjectives into categories and was used within this context to reduce the number of adjectives to manageable subsets, suitable for factor analysis.

Evaluation, potency, and activity

Osgood and his colleagues performed a factor analysis
Factor analysis
Factor analysis is a statistical method used to describe variability among observed, correlated variables in terms of a potentially lower number of unobserved, uncorrelated variables called factors. In other words, it is possible, for example, that variations in three or four observed variables...

 of large collections of semantic differential scales and found three recurring attitudes that people use to evaluate words and phrases: evaluation, potency, and activity. Evaluation loads highest on the adjective pair 'good-bad'. The 'strong-weak' adjective pair defines the potency factor. Adjective pair 'active-passive' defines the activity factor. These three dimensions of affective meaning were found to be cross-cultural universals in a study of dozens of cultures.

This factorial structure makes intuitive sense. When our ancestors encountered a person, the initial perception had to be whether that person represents a danger. Is the person good or bad? Next, is the person strong or weak? Our reactions to a person markedly differ if perceived as good and strong, good and weak, bad and weak, or bad and strong. Subsequently, we might extend our initial classification to include cases of persons who actively threaten us or represent only a potential danger, and so on. The evaluation, potency and activity factors thus encompass a detailed descriptive system of personality. Osgood's semantic differential measures these three factors. It contains sets of adjective pairs such as warm-cold, bright-dark, beautiful-ugly, sweet-bitter, fair-unfair, brave-cowardly, meaningful-meaningless.

The studies of Osgood and his colleagues revealed that the evaluative factor accounted for most of the variance in scalings, and related this to the idea of attitudes
Attitude (psychology)
An attitude is a hypothetical construct that represents an individual's degree of like or dislike for something. Attitudes are generally positive or negative views of a person, place, thing, or event— this is often referred to as the attitude object...

 .

Usage

The semantic differential is today one of the most widely used scales used in the measurement of attitudes. One of the reasons is the versatility of the items. The bipolar adjective pairs can be used for a wide variety of subjects, and as such the scale is nicknamed "the ever ready battery" of the attitude researcher.

Statistical properties

Five items, or 5 bipolar pairs of adjectives, have been proven to yield reliable findings, which highly correlate with alternative measures of the same attitude

The biggest problem with this scale is that the properties of the level of measurement are unknown. The most statistically sound approach is to treat it as an ordinal scale, but it can be argued that the neutral response (ie the middle alternative on the scale) serves as an arbitrary zero point
Zero point
Zero point may refer to:* Zero Point , a point at the north side of Assistance Bay in Possession Bay, South Georgia. The name appears on a chart in the 1932 DI surveys at South Georgia, 1926-30* Zero point...

, and that the intervals between the scale values can be treated as equal, making it an interval scale.

A detailed presentation on the development of the semantic differential is provided in the monumental book, Cross-Cultural Universals of Affective Meaning. David R. Heise
David R. Heise
David Reuben Jerome Heise is a social psychologist who originated the idea that affectual processes control interpersonal behavior. Additionally he contributes to both quantitative and qualitative methodology in sociology...

's Surveying Cultures provides a contemporary update with special attention to measurement issues when using computerized graphic rating scale
Rating scale
A rating scale is a set of categories designed to elicit information about a quantitative or a qualitative attribute. In the social sciences, common examples are the Likert scale and 1-10 rating scales in which a person selects the number which is considered to reflect the perceived quality of a...

s.

See also

  • Thurstone scale
    Thurstone scale
    In psychology, the Thurstone scale was the first formal technique for measuring an attitude. It was developed by Louis Leon Thurstone in 1928, as a means of measuring attitudes towards religion. It is made up of statements about a particular issue, and each statement has a numerical value...

  • Likert scale
    Likert scale
    A Likert scale is a psychometric scale commonly involved in research that employs questionnaires. It is the most widely used approach to scaling responses in survey research, such that the term is often used interchangeably with rating scale, or more accurately the Likert-type scale, even though...

  • Structural Differential
    Structural differential
    The Structural differential is a physical chart or three-dimensional model illustrating the abstracting processes of the human nervous system. In one form, it looks like a pegboard with tags. Created by Alfred Korzybski, and awarded a U.S. patent on May 26, 1925, it is used as a training device in...


External links

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