Proposed Design Principles of Malay Sign Language (MSL) Mobile Application for Hearing-Impaired Alpha Generation Based on Nielsen and Molich’s Design Guidelines: Validation through Expert Review Method

Malay Sign Language (MSL) mobile application is an application that was developed to support hearing-impaired (HI) learners in learning sign language interactively. Various MSL mobile applications have been designed and developed. However, the existing MSL mobile applications fail to evoke the cognitive ability among the HI learners, particularly the HI alpha generation, due to the lack of functionalities and usability issues that arise. Hence, it is crucial to evaluate the mobile applications to ensure they meet the users’ needs and expectations. Thus, previous researchers suggested hybridizing Nielsen and Molich’s Design Guidelines (NMDG) in evaluating the MSL mobile applications as it could evoke the cognitive ability among the learners. However, the existing NMDG does not consider the HI context. Thus, this study aims to propose a new set of design principles that consider the HI context based on the NMDG to evaluate the MSL mobile application for the HI alpha generation.