Adult Learning Theories and their Role in Instructional Design, Curriculum Development and Educational Technology QURATULAIN Department of Education, Alhamd Islamic University, Islamabad, PAKISTAN. IFFAT BASIT Department of Education, Alhamd Islamic University, Islamabad, PAKISTAN. KHUDA BAKHSH Department of Education, Government College University, Faisalabad, PAKISTAN. MUHAMMAD HAFEEZ Research Scholar, Allama Iqbal Open University, Islamabad, PAKISTAN. Abstract: Modern lifelong learning, and especially when it involves technical issues, is absolutely necessary in any modern form of development and environmental protection. States and societies need to constantly focus on lifelong learning because it is the best investment that pays off in the short and long term. A critical stage was emergence of adult learning theories in learning process. Cognitivism, constructivism, Behaviorism and connectivism have been broadly applied in educational learning process to enhance the educational learning system according to the students capabilities and requirements. This study analyzed four adult learning theories namely constructivism, behaviorism, connectivism and cognitivism and their importance in lesson design, curriculum development and educational technology. The current review study's findings revealed that cognitivism, constructivism and behaviourism are foundations for syllabus development, instruction design and technology development. To incorporate technology into the learning process, the connectivism learning theory connects the learning theories of cognitivism, behaviourism and constructivism. The difficulties in putting learning theories into practice, as well as potential solutions, are addressed in this article. Key Words: Environment, Development, Challenges, Cognitive Skills, Instructors, Learning Strategies, Technological Tools Received: April 12, 2021. Revised: October 2, 2021. Accepted: October 22, 2021. Published: November 11, 2021. 1. Introduction Learning is a basic requirement of humankind and an important part for the development of educational system of a state [1]. Various adult learning theories have been presented in different studies to improve the teaching- learning and psychological process [2-3]. The purposes of presenting learning theories were to recognize and advance the educational learning process according to the learner’s skills and mental ability [4]. The learning theory considers that how an instructor or coach influences on the behaviour of learners in a learning process. The educators play a vital role in educational learning systems by generating the proper environment [5]. The researchers [6] counseled that running with the novices in numerous conditions, the teachers practice conceptual understanding to reap higher achievements. Yanchar et al [7] reported in a study that getting to know about adult learning theories are a method of verified educational strategies. Yilmaz [8] projected in a research study that getting to know about adult learning theories offer a fundamental WSEAS TRANSACTIONS on ENVIRONMENT and DEVELOPMENT DOI: 10.37394/232015.2021.17.106 Quratulain, Iffat Basit, Khuda Bakhsh, Muhammad Hafeez E-ISSN: 2224-3496 1149 Volume 17, 2021