[Solved] A problem that consistently interferes with one's ability to complete the sexual response cycle is called A) an STI. B) erotic plasticity. C) a sexual disorder. D) a refractory period. Modality Principle: A guideline in multimedia learning suggesting that people learn better when information is presented in both verbal and visual formats rather than in verbal format alone. Multimedia Principle: The concept that people learn more effectively from words and pictures than from words alone. Customization Principle: The concept that training and educational content should be tailored to meet the specific needs and preferences of the learner. Computer-based Training: An educational or training process facilitated by the use of computers and software programs to provide interactive instruction in various subjects.