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ISO 9241-11 사용성 정의

1998
  • International Organization for Standardization (ISO)
사용자들이 인간-컴퓨터 상호작용 분야에서 소프트웨어 애플리케이션을 평가하는 사용성 테스트 연구실.

(설명을 위한 생성된 이미지입니다)

The international standard ISO 9241-11 defines usability as the “extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use.” This definition provides a framework for measuring usability by breaking it down into three distinct, quantifiable components, moving beyond purely subjective assessments.

The ISO 9241-11 standard, part of the broader ISO 9241 series on “인간 공학 of human-system interaction,” provided a crucial, formal definition that helped mature the field of usability engineering. Prior to its establishment, “usability” was often used loosely. This standard operationalized the concept into three measurable dimensions. ‘Effectiveness’ refers to the accuracy and completeness with which users achieve specified goals. For example, can a user successfully complete a purchase on an e-commerce site? ‘Efficiency’ relates to the resources expended in relation to the accuracy and completeness with which users achieve goals. This is often measured in terms of time taken or clicks required. ‘Satisfaction’ is the user’s subjective response—their freedom from discomfort and positive attitudes towards the use of the product. It is typically measured using post-test questionnaires. The definition also emphasizes the “specified context of use,” acknowledging that usability is not an absolute, intrinsic quality of a product but is dependent on the specific users, their goals, and the environment (physical, social, technical) in which they operate. This contextual element is critical, as a product highly usable for an expert in a controlled office environment might be unusable for a novice in a distracting, mobile setting. The standard’s framework guides practitioners in setting clear, testable usability goals and evaluating designs against them.

UNESCO Nomenclature: 1203
컴퓨터 과학

유형

추상 시스템

분열

상당한

용법

널리 사용됨

전구체

  • The field of ergonomics and human factors, which studied human capabilities and limitations in relation to work environments and tools.
  • Early work in software 심리학 and human-computer interaction from the 1970s and 1980s.
  • Brian Shackel’s 1986 definition of usability, which included effectiveness, learnability, flexibility, and attitude.
  • The quality management movement (e.g., ISO 9000), which emphasized standardized, measurable definitions of quality.

응용 프로그램

  • development of usability testing metrics
  • standardized reporting in product evaluations
  • legal and contractual requirements for software procurement
  • integration into 사용자 중심 design processes
  • certification of product quality

특허:

NA

잠재적 혁신 아이디어

  • ai-driven usability auditors that automatically assess interfaces against ISO 9241-11 metrics
  • context-aware interfaces that dynamically adjust to improve effectiveness and efficiency based on user location and task
  • personalized satisfaction prediction models for digital products
  • gamified training modules that teach developers the principles of the ISO standard
  • a blockchain-based system for certifying and tracking product usability compliance
  • 의복 sensors that measure physiological correlates of satisfaction (e.g., stress levels) during usability tests
  • a universal usability score generator for websites based on automated analysis
  • virtual reality simulations for testing usability in high-stakes environments (e.g., cockpits, surgical tools)
  • crowdsourced platforms for evaluating product usability across diverse global contexts
  • automated tools for generating usability reports compliant with ISO 9241-11
Related to: usability, ISO 9241-11, effectiveness, efficiency, satisfaction, human-computer interaction, user-centered design, ergonomics, standard, context of use.

역사적 맥락

ISO 9241-11 사용성 정의

1990
1990
1993
1998
2010
2016
1988-06-01
1990
1993
1997-04-23
2001
2010
2020

(날짜를 알 수 없거나 관련이 없는 경우, 예를 들어 "유체역학"의 경우, 주목할 만한 등장 시기를 대략적으로 추정하여 제공합니다.)

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