Final answer:
The described procedure is known as backward chaining, a teaching method where the last step of a task is taught first, commonly used in behavioral psychology.
Step-by-step explanation:
The procedure described where the trainer completes all initial steps except the last is known as backward chaining. In this approach, used commonly in behavioral psychology and learning, the individual learns a complex skill by first mastering the final step and then gradually learning each preceding step. It's a part of applied behavior analysis and often used in various learning and training environments.
The Preparatory Phase involves setting up the necessary materials and conditions for the task. Following this, the Implementation and Learning Phase takes place where the actual teaching of the last step occurs. Once mastered, preceding steps are introduced in reverse order. The Program Evaluation Phase involves assessing if the individual can perform the final step and subsequently all other steps independently. Finally, the Development of Lessons Learned is where any adjustments to the teaching process are made based on the outcomes of the procedure.
Each step in this procedure is crucial, and with each step learned, the previous steps are reinforced, leading to a comprehensive understanding and ability to perform the entire task.