Description of implementation and its issues Essay

Description of implementation and its issues - Essay Example Expert review is a way of testing usability, by bringing experienced experts who specialize in usability testing on board, in order to evaluate the usability of an interface.When one or more human factors experts are involved in evaluation of an interface, this is referred to as Heuristic evaluation of usability Audit. The experts who are included in the evaluation are charged with the responsibility of measuring the usability, effectiveness and efficiency of the interface founded on Jakob Nielsen definition (Heuristic Evaluation par 1). Nielsen’s Usability Heuristics, which have persistently developed in reply to new devices and user research, include consistency and standards; visibility of system status; error prevention; flexibility and efficiency of use; recognition rather than recall; help and documentation; user control and freedom, aesthetic and minimalist design; help users recognize, recover and diagnose from errors; and match between system and the real world. User- based evaluations User-based evaluation methods involve identification of representative tasks, representative users, and designing of a procedure for identifying the problems that users face while attempting to use a certain software product in their undertakings. During the development, testing, design stage of software development, the two types of users’ evaluations that are performed include formative evaluations (used to gather information for design) and summative evaluations (used to document efficiency, effectiveness, and user satisfaction of a product). Model-based evaluations A replica of the human information processor has been designed founded on information drawn from psychology research regarding human’s memory, perception and cognition system. This model has integrated capabilities of long-term and short-term memory, together with capabilities of human audio and visual processing. Also included are times for cognition motor processing and processing. Th is model allows interactions of human- computer researchers in order to evaluate user interfaces on the basis of the model’s performance. Tools for evaluating information systems Questionnaires For a long time, questionnaires have been used to evaluate user interfaces (Root and Draper 87). They can be used in paper form or electronically (for example surveymonkey.com). Different questions are designed to specifically evaluate components of reliability, validity, and usability of the User Interface (Tullis and Albert 317). Currently, there are multiples of online survey services that can be used for this purpose, including survey monkey, KeySurvey, WebSurveyor, QuestionPro, and Free Online Surveys. I will do further research to identify the best survey services to use. Choice of questionnaires is mainly motivated by their ease of grasping of many people and the power of showing many audiences. Checklist Although many checklists are designed for assessment of hardware, they can also be used for software assessment. The checklist that will be used in evaluation of user interface will be based on a simple concept. Each design principle will be featured as an individual entry in the list. To indicate weighing of importance, a space will be indicated after each entry, followed by a space to indicate approximation of compliance. The last space will include notes on whether remarks have been made to allude to definite design deficiencies or any other related information. The evaluation of checklist will be based on evaluation of User Systems Interface. There are six general functional areas of USI design that will be covered including data entry, design, data display, user guidance, sequence control, data transmission, and data protection. Report III: Final description of system issues and solutions Why is it important to understand who are the stakeholders and their interaction with the user interface? Understanding