When Mr. Roberts verbalizes how to hand crank his blood pump in an emergency, it exemplifies which adult learning principle?

The scenario in which Mr. Roberts verbalizes how to hand crank his blood pump during an emergency exemplifies the cognitive learning principle. This principle involves understanding, memorizing, and applying knowledge. Mr. Roberts demonstrates his cognitive ability by recalling the information he has learned about operating the blood pump and expressing it verbally, which indicates that he has processed the information at a cognitive level.

Cognitive learning is fundamental to understanding concepts and processes in medical situations such as hemodialysis. It involves higher-order thinking skills, including analysis, evaluation, and creation of knowledge.

In this context, while the other principles—affective, motor skill, and psychomotor—relate to feelings, physical skill acquisition, and practical application respectively, the focus on Mr. Roberts' ability to articulate the procedure highlights his cognitive understanding and retention of necessary information regarding emergency actions with the blood pump.