________________________________ Author info: Correspondence should be sent to: Dr. Imelu G. Mordeno, College of Education, Mindanao State University-Iligan Institute of Technology Tibanga, Iligan City, Philippines 9200 imelumordeno@gmail.com North American Journal of Psychology, 2024, Vol. 26, No. 3, 551-570.  NAJP What Keeps Students from Learning Physics? Development and Validation of the Physics Amotivation Scale Imelu G. Mordeno, Esmar N. Sedurifa, Sotero O. Malayao Jr., Mindanao State University-Iligan Institute of Technology, Philippines. Ma. Jenina N. Nalipay The Chinese University of Hong Kong Amotivation is usually conceptualized as a unidimensional construct and studied in a domain-general manner. However, this has limitations in capturing the nuances of the construct and domain-specific information. Hence, we developed and validated the Physics Amotivation Scale (PAS), which measures the taxonomy of reasons for the absence of motivation in physics among high school students. Two studies were conducted. In Study 1, we developed PAS and identified its factor structure using exploratory factor analysis (EFA). EFA revealed five factors: value placed on the task, negative emotions associated with learning Physics, teaching pedagogy, characteristics of the task/subject, and ability and effort beliefs. In Study 2, we confirmed the five-factor structure using confirmatory factor analysis (CFA). CFA showed that the model has good fit to the data. Criterion-related validity was demonstrated as PAS positively correlated with academic amotivation, and negatively, with learning strategies and school engagement. The findings support the multidimensionality of physics amotivation, and provided evidence regarding PAS’s sound psychometric properties. Keywords: amotivation, physics, Physics Amotivation Scale, scale development Science is crucial in the society’s state of affairs. Formulation of effective and appropriate government laws, policies, and regulations are highly dependent on relevant scientific and technological tools and information. For citizens to understand and be actively involved in tackling social issues and concerns, increased science literacy is imperative. Unfortunately, the most recent results in the Program for International Student Assessment (PISA; Organisation for Economic Co- operation and Development, 2019), showing the Philippines at the