Concept-based Analysis of Surface and Structural Misfits (CASSM) Tutorial notes
Concept-based Analysis of Surface and Structural Misfits (CASSM) Tutorial notes
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基于概念的表面和结构失配分析 (CASSM) 教程笔记
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
T. Green
中科院分区：
文献类型：
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作者：
A. Blandford;I. Connell;T. Green
基于概念的表面和结构不匹配分析（CASSM）是一种新的可用性分析方法，专注于用户和系统概念之间的不匹配。我们认为，作为一种方法，它有几个可取的品质：o它侧重于概念，而不是任务或程序。因此，它补充了大多数现有的可用性评估方法。特别是，它分析了用户和系统之间的概念失配。o通过有意支持“粗略”分析，CASSM避免了困扰许多评估技术的“细节致命”。CASSM分析并不一定要完整或一致才有用--尽管一个彻底的分析当然可能具有这些属性。此外，CASSM分析通常非常简洁，与（例如）认知演练（Wharton et al，1994），启发式评估（Nielsen，1994）或GOMS分析（John & Kieras，1996）相比。作为一种符号，它在支撑心智模型工作的核心思想和设计问题之间提供了一座“桥梁”，因此可以使心智模型的先前工作更容易进入设计实践。[This应该被视为尚未被检验的假设。o CASSM符号为绿色的许多认知维度提供了一个相对正式的定义（例如，参见绿色，1989;绿色和Petre，1996; Blackwell和绿色，2003）。通过这种方式，它进一步支持从CD的角度对系统进行评估。这一点将在本文件末尾详细讨论。虽然名称（CASSM：基于概念的表面和结构不匹配分析）强调了不匹配的重要性，但您应该意识到，还有其他类型的用户-系统不匹配不在CASSM的范围内;例如，类似任务的程序中的不一致可以通过其他技术来解决，但在CASSM中不会直接解决。CASSM侧重于概念结构。
Concept-based Analysis of Surface and Structural Misfits (CASSM) in a novel approach to usability analysis that focuses attention on misfits between user and system concepts. We believe that as an approach it has several desirable qualities: o It focuses on concepts rather than tasks or procedures. Consequently, it complements the majority of existing approaches to usability evaluation. In particular, it analyses conceptual misfits between user and system. o By intentionally supporting ‘sketchy’ analysis, CASSM avoids the ‘death by detail’ that plagues many evaluation techniques. CASSM analyses do not have to be complete or consistent to be useful – though of course a thorough analysis is likely to have these properties. Also, CASSM analyses are often quite succinct, compared to (for example) a Cognitive Walkthrough (Wharton et al, 1994), Heuristic Evaluation (Nielsen, 1994) or GOMS analysis (John & Kieras, 1996). o As a notation, it provides a ‘bridge’ between the core ideas underpinning work on mental models and design issues, and may thus make prior work on mental models more readily accessible to design practice. [This should be regarded as a hypothesis that has not yet been tested.] o The CASSM notation provides a relatively formal definition of many of Green’s Cognitive Dimensions (see, for example, Green, 1989; Green & Petre, 1996; Blackwell & Green 2003). In this way, it further supports assessment of a system in terms of CDs. This is discussed in detail towards the end of this document. Although the name (CASSM: Concept-based Analysis of Surface and Structural Misfits) emphasises the importance of misfits, you should be aware that there are other kinds of user–system misfits that are outside the scope of CASSM; for example, inconsistencies in procedures for similar tasks would be picked up by other techniques but are not directly addressed within CASSM. CASSM focuses on conceptual structures.