9.6 Intervention Planning, Adaptation, and Informed Consent

Building an intervention plan that can be defended

A treatment plan is a decision document, not a formality. It should show how the psychologist understands the problem, what change is being targeted, what method will be used, why that method fits, and how progress will be evaluated. On EPPP Part 2-Skills, intervention questions often turn on whether the candidate can connect evidence, assessment findings, client context, and professional limits into a coherent next step.

The plan begins with case formulation. Diagnosis may be part of the formulation, but it is not the whole plan. The psychologist also considers maintaining factors, strengths, culture, family and system context, readiness for change, risk, medical or substance factors, and prior treatment response. A strong plan names the intervention target in observable terms, such as panic avoidance, trauma reminders, parent-child coercive cycles, insomnia behavior, compulsions, or medication adherence barriers.

Adaptation is often tested because real clients do not look like textbook examples. A psychologist may adapt language level, metaphors, family involvement, session length, homework format, telehealth procedures, or accessibility supports. The key is to preserve the intervention's active elements. If exposure therapy becomes only reassurance, or behavioral activation becomes only supportive conversation, the adaptation may no longer deliver the intended mechanism.

Informed consent must be active and understandable. Clients should know the nature and purpose of services, expected benefits, foreseeable risks, alternatives, confidentiality limits, fees when relevant, and roles. In assessment-linked intervention, the psychologist should also explain how results will be used. For minors, mandated clients, couples, families, and organizations, consent and assent issues can become more complex, so the exam expects role clarity before services begin.

Intervention planning checklist:

• Confirm the referral question, diagnosis or formulation, and current risk level.
• Define measurable treatment goals with the client when possible.
• Select an evidence-informed method that fits the target and setting.
• Discuss benefits, risks, alternatives, confidentiality limits, and roles.
• Coordinate care when medical, school, family, or system factors affect treatment.
• Identify progress measures and decision points for revising the plan.

Part 2 may ask when to refer. Referral is appropriate when the client's needs exceed the psychologist's competence, the required service is outside the role, a conflict prevents objectivity, the setting cannot provide adequate care, or the client needs a higher level of care. Referral should be handled responsibly, with continuity planning and attention to safety. It should not be used to avoid a difficult but appropriate case solely because the psychologist feels uncomfortable.

Coordination can be part of intervention. A client with serious depression may need collaboration with a prescriber. A child with school impairment may need consent-based communication with caregivers and school personnel. A client with chronic pain may need integrated behavioral and medical planning. Coordination should be limited to relevant information and consistent with confidentiality rules.

The best Part 2 intervention answer is usually neither passive nor impulsive. It takes the available assessment data seriously, explains the plan, monitors outcomes, and changes course when the client is not improving. That is what makes intervention a skill rather than a list of treatment names.