ASTM Publishes Manual on Just-About-Right Scales
April 26, 2009 // Published as a news service by IHS
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ASTM International published Manual 63, Just-About-Right (JAR) Scales: Design, Usage, Benefits and Risks, which offers information on the use of JAR scales in consumer testing including their application, construction, analysis and interpretation.
Manual 63 also identifies the risks associated with the use of JAR scales and ways to reduce those risks.
JAR scales measure levels of a product's attribute relative to a respondent's theoretical ideal level.
These scales have an anchored midpoint of "just-about-right" or "just right," and endpoints anchored to represent intensity levels of the attributes that are higher and lower than ideal, according to ASTM.
The manual is useful for professionals who use JAR scales when conducting consumer research, said ASTM experts.
It also includes case studies for the analysis of JAR scale data and alternatives to JAR scales.
Source: ASTM International.