Question 8 2 pts When is errorless learning accomplished? O By using constant artificial prompt conditions along with a long delay before introducing the natural SD O When the trainer knows the exact moment that the S' takes over control allowing the trainer to avoid presenting unnecessary prompts When instructional methods specifically designed to prevent or substantially minimize any learner errors are used to teach particular discriminations By the introduction of response delays, adding irrelevant stimuli as well as highlighting critical elements of the natural stimulus