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ISO 4120 — Triangle tests are forced-choice difference tools with carryover limits
ISO 4120 — Triangle tests are forced-choice difference tools with carryover limits

ISO 4120 — Triangle tests are forced-choice difference tools with carryover limits

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Tags
Triangle TestTriangle TestCarryover ControlCarryover ControlSensory ValidationSensory ValidationSensory Method SelectionSensory Method Selection
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Legacy Single Excerpt
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Legacy Associated Permanent Note
Content
Citation(s) & Footnote(s)
Book(s)
One Literature Note synthesizes one Source. It should be understandable without reopening the source while remaining traceable to exact Excerpts.

Source argument

Summarize the author's central argument and relevant reasoning in your own words.

Evidence map

Connect the exact Excerpts that support this note. Do not place unlocated quotations only in the page body.

Researcher synthesis

Explain what the source contributes to the project, how it connects to other research, and where you agree, disagree, or remain uncertain.

Assessment

Record evidence quality, source limitations, and open questions. Separate the author's position from your interpretation.

Completion checklist

Exactly one canonical Source is related.
Every consequential assertion is backed by one or more Excerpts.
Core Summary is complete.
Author Argument and Researcher Synthesis are distinct.
Limitations and open questions are recorded.
Candidate durable ideas have been promoted to Zettels.
Note Status is Complete only after this checklist passes.
Date
August 29, 2026
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Contributors
International Organization for StandardizationInternational Organization for Standardization
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Source
No access
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Excerpts
ISO — Triangle testing is forced choice and does not reveal magnitude, direction, or causeISO — Triangle testing is forced choice and does not reveal magnitude, direction, or causeISO — Strong carryover can make triangle testing unsuitableISO — Strong carryover can make triangle testing unsuitable
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Zettels
Sensory questions require distinct test methodsSensory questions require distinct test methodsA triangle test detects difference without explaining itA triangle test detects difference without explaining itCarryover can invalidate an otherwise efficient discrimination testCarryover can invalidate an otherwise efficient discrimination testBlind and contextual tastings answer different questionsBlind and contextual tastings answer different questionsSmall sensory pilots support local decisions, not category lawsSmall sensory pilots support local decisions, not category lawsTasting literacy requires structure without answer-key thinkingTasting literacy requires structure without answer-key thinking
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Citations
Standardization — EXT-1348 — Abstract, 48, 51Standardization — EXT-1348 — Abstract, 48, 51Standardization — EXT-1347 — Abstract, 45, 61Standardization — EXT-1347 — Abstract, 45, 61
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