Measurement of both usability and accessibility is an important concern in software development today. However, while a great amount of attention has been paid to product-based measurement, little attention has been paid to the process-based one. Our research is based on the following concerns: on the one hand, we detect a lack of previous work focusing on usability and accessibility together in order to evaluate process quality. On the other hand, it is possible to propose a model for evaluating the capability maturity considering usability and accessibility practices. Starting with the motivation and problem description, we have proposed conceptual hypotheses to conduct our research. This way, this paper describes the conception of a capability maturity model named MODECUA, which provides a framework to evaluate development processes centered on usability and accessibility. Together with a detailed description of MODECUA, we provide a study case to validate our approach. MODECUA includes seven improved processes that we have contributed with eight new activities, 11 adapted activities and processes, and 9 renamed activities. In addition, we have integrated 127 new work products. In addition, an evaluation accomplished in a real company has provided relevant results concerning the application of our approach. Our approach helps to determine the capability maturity of a development process focused on usability and accessibility. It ensures that software products are usable and accessible, increasing user satisfaction and psychological wellness. Besides, it promotes a user-centered approach in the organization, facilitating audits and minimizing costs, time and effort.

可用性和可访问性的度量是当今软件开发中的一个重要问题。然而，尽管已经非常关注基于产品的测量，但是很少关注基于过程的测量。我们的研究基于以下关注点：一方面，我们发现缺乏以前的工作来集中评估可用性和可访问性，以评估过程质量。另一方面，考虑到可用性和可访问性实践，可以提出一个评估能力成熟度的模型。从动机和问题描述开始，我们提出了概念上的假设来进行研究。这样，本文描述了名为MODECUA的能力成熟度模型的概念，它提供了一个框架来评估以可用性和可访问性为中心的开发过程。连同MODECUA的详细说明，我们提供了一个研究案例来验证我们的方法。MODECUA包括七个改进的流程，我们贡献了八个新活动，11个改编的活动和流程以及9个重命名的活动。此外，我们还集成了127种新的工作产品。此外，在真实公司中完成的评估还提供了有关我们方法应用的相关结果。我们的方法有助于确定以可用性和可访问性为重点的开发过程的能力成熟度。它确保软件产品可用和可访问，从而提高用户满意度和心理健康度。此外，它促进了组织中以用户为中心的方法，