In behavior support, the least dangerous assumption encourages starting with which type of approach?

• A. Most restrictive interventions
• B. Unproven methods
• C. Least intrusive, evidence-based approaches
• D. Ignoring data and relying on hunches

Answer: (C)

The idea being tested is to begin with the least dangerous assumption in behavior support: start with the least intrusive, evidence-based approaches. This means using proactive, nonpunitive strategies that are grounded in data—teaching replacement skills, establishing clear expectations, providing predictable routines, and adjusting the environment to support positive behavior. These approaches minimize risk to the learner while giving you a solid, measurable way to see what works, and you can escalate only if needed based on progress data.

Starting with the least intrusive, evidence-based methods is preferred because it focuses on safe, effective practices that respect the learner’s rights and dignity. In contrast, using the most restrictive interventions can increase risk and harm, relying on unproven methods carries uncertainty and potential misconduct, and ignoring data or acting on hunches ignores actual patterns and may lead to ineffective or unsafe decisions.