{"id":11700,"date":"2014-08-05T08:00:45","date_gmt":"2014-08-05T08:00:45","guid":{"rendered":"https:\/\/stagingweb.trainingindustry.com\/?post_type=wiki&p=11700"},"modified":"2026-03-17T16:46:59","modified_gmt":"2026-03-17T20:46:59","slug":"forgetting-curve","status":"publish","type":"wiki","link":"https:\/\/trainingindustry.com\/wiki\/content-development\/forgetting-curve\/","title":{"rendered":"Forgetting Curve"},"featured_media":11334,"template":"","tags":[1585,981,459],"class_list":["post-11700","wiki","type-wiki","status-publish","has-post-thumbnail","hentry","tag-forgetting-curve","tag-memory","tag-retention","global_topic_tax-content-development"],"acf":{"sponsored":false,"gated":false,"gated_content_type":"","file_attachment":null,"gated_content":"","form_instruction_header":"To access the full article, please fill out the form below:","pardot_html_embed":"","custom_dfp_keywords":"","wiki_date":null,"excerpt":"Training professionals have for many years, dealt with the challenge of improving the learners\u2019 retention after they leave the classroom or online training experience.","wiki_sections":[{"heading":"","content":"Training professionals have long faced the challenge of helping learners retain knowledge after they leave the classroom or online training experience. Traditionally, this challenge has been framed around the idea that learners forget information rapidly over time \u2014 a concept popularized by German psychologist Hermann Ebbinghaus in 1885.\r\n

The Origins of the Forgetting Curve<\/h2>\r\nEbbinghaus conducted experiments memorizing nonsense syllables such as \u201cWID\u201d and \u201cZOF,\u201d testing himself at varying intervals and recording how quickly the material was forgotten. His results led to the formulation of the \u201cforgetting curve,\u201d which depicts memory decay over time in the absence of reinforcement. A typical representation suggests that humans may lose roughly half of newly learned information within days or weeks if not actively reviewed.\r\n\r\n\"Forgetting\r\n

Context Matters<\/h2>\r\nWhile the forgetting curve is often cited in corporate training as a justification for repetition and reinforcement strategies, modern research<\/a> shows that memory decay is highly dependent on the type and relevance of information. Material that is meaningful, valuable or embedded in context tends to be retained much longer, even without reinforcement. In other words, context and relevance often matter more than repeated exposure alone.\r\n

Reinforcement and Memory Strength<\/h2>\r\nAlthough reinforcement is not the only factor influencing retention, it remains highly effective when aiming to improve learning outcomes and facilitate behavioral change. Techniques such as quizzes, spaced repetition, post-training coaching, knowledge checks and follow-up webinars can strengthen memory, particularly when applied after initial learning.\r\n\r\nMemory strength, or the durability of memory traces in the brain, also influences retention. Stronger memories persist longer and are more easily recalled. Factors affecting the speed of forgetting include the meaningfulness of material, representation methods, physiological states (stress, sleep), and mnemonic skill.\r\n

Increasing Memory Retention<\/h2>\r\nEvidence-based strategies to enhance memory retention include:\r\n