The history of instructional design transitioned from a focus on skills development and knowledge acquisition in the 1950s-1960s based on behaviorism, to a more learner-centered approach influenced by constructivism in the 1990s-present. Contemporary trends integrate social media, cloud-based services, and data-driven personalization to improve the learner experience. Major developments included programmed instruction in the 1950s, models identifying learning domains in the 1960s, and the rise of computer-based learning and online learning from the 1970s-2000s.