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NASM CSNC: Behavior Change and Coaching Psychology

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Behavior Change and Coaching Psychology

What this domain tests

Behavior Change and Coaching Psychology tests your ability to move a client from intention to sustained action using evidence-based coaching: stages of change, motivational interviewing, self-determination theory, goal setting, self-monitoring, and relapse prevention. The exam favors collaboration over instruction.

Core rules

  • Stages of change: precontemplation, contemplation, preparation, action, maintenance. Match your intervention to the stage; a plan is premature in precontemplation.
  • Motivational interviewing: use OARS-open questions, affirmations, reflections, summaries-and elicit change talk. Avoid the righting reflex, or fixing too soon.
  • Self-determination theory: support autonomy, competence, and relatedness. Ask permission before advising; offer choices.
  • Goals: specific, measurable, achievable, relevant, time-bound; process goals such as preparing three lunches beat outcome-only goals.
  • Self-monitoring: food logs, hunger ratings, and habit trackers build awareness; review without judgment.
  • Relapse prevention: identify high-risk situations, plan coping responses, and normalize lapses as data.

Worked example

A client says, “I know I should eat better, but my schedule is chaos.” This is contemplation, not preparation. Rather than issuing a meal plan, reflect: “Your schedule makes consistent eating feel impossible right now.” Ask what has worked before and what a small, autonomous experiment might be. If the client proposes packing snacks, affirm and help make it specific. Reasoning: change talk from the client predicts behavior better than advice from the coach.

Traps

  • Confronting or lecturing, which increases resistance.
  • Giving a full plan before readiness.
  • Setting vague goals like “eat healthier.”
  • Treating a lapse as failure rather than a review point.