By Matt Harrington, BCBA · Behaviorist Book Club · Research-backed answers for behavior analysts
HRE is a framework coined by Dr. Greg Hanley that establishes the client's observable emotional and behavioral state as a priority in applied behavior analysis. 'Happy' refers to observable indicators of positive affect — smiling, laughing, positive vocalizations, approach behavior. 'Relaxed' refers to the absence of tension, anxiety indicators, and stress-related behaviors — open body posture, regular breathing, absence of rigid or guarded physical presentation. 'Engaged' refers to active, willing participation in activities — sustained attention, active responding, spontaneous communication, and willingness to attempt new tasks. HRE is not merely a philosophy — it is an operationally defined set of client states that can be measured, tracked, and used to guide clinical decisions. When a client is in an HRE state, the treatment environment is functioning as intended and instruction can proceed effectively. When any component of HRE is compromised, the priority shifts to restoring it.
HRE is a systematic, data-driven framework for creating optimal learning conditions — not a vague directive to be pleasant. The distinction lies in several key features. HRE requires operational definition: the specific observable behaviors that indicate happiness, relaxation, and engagement are defined for each individual client. HRE requires measurement: these indicators are tracked across sessions to evaluate whether the treatment environment is maintaining the desired state. HRE guides clinical decisions: when HRE indicators decline, the practitioner modifies the environment rather than pressing forward with instruction. Being 'nice' is a disposition. HRE is a treatment strategy grounded in the behavioral evidence that learning is optimized when clients are in positive states and that treatment environments that are experienced positively produce better generalization and maintenance of acquired skills.
Individualization is one of HRE's most critical features. What constitutes happiness for one learner may differ substantially from another. A socially motivated child may demonstrate happiness through interaction-seeking and shared laughter, while a sensory-motivated child may demonstrate happiness through calm exploration of preferred materials. A child with high anxiety may need significantly different conditions for relaxation than one with a generally calm baseline. Engagement looks different for a verbal learner who asks questions and comments on activities versus a non-verbal learner whose engagement is indicated by sustained visual attention and physical participation. The individualization process requires careful observation, caregiver input, and ongoing assessment. Clinicians should avoid assuming that their own indicators of happiness, relaxation, and engagement apply to their clients. The case studies in this course illustrate the diversity of HRE presentations and the clinical creativity required to identify and maintain these states across different learner profiles.
Common barriers include organizational pressure for high rates of discrete trial instruction that may conflict with the time needed to establish and maintain HRE, caregiver expectations for rapid skill acquisition that may lead to resistance when sessions begin with extended HRE establishment, environmental factors such as noise, unpredictable interruptions, or inadequate physical spaces that make it difficult to create calming conditions, difficulty defining HRE indicators for clients with atypical emotional expression or limited communication, and transitions between settings that disrupt established HRE states. The case studies in this course address these barriers directly, describing strategies such as building HRE time into session planning, educating caregivers about the relationship between client state and learning outcomes, modifying environments to support HRE, and developing transition strategies that maintain HRE across settings.
HRE and assent-based practice are closely aligned and mutually reinforcing. Assent refers to the client's ongoing willingness to participate in treatment activities, as indicated by approach behavior, absence of distress, and active engagement. When a client is in an HRE state, they are demonstrating assent through their observable behavior — they are approaching, engaging, and participating willingly. Conversely, when HRE indicators decline — when the client becomes tense, avoidant, or distressed — they are withdrawing assent. Assent-based practice requires responding to this withdrawal by modifying the treatment conditions, which is exactly what the HRE framework prescribes. In this sense, HRE provides the operational measurement framework for assent-based practice, giving clinicians specific, observable indicators to monitor rather than relying on subjective judgments about whether the client is 'willing' to participate.
Research across multiple disciplines consistently demonstrates that positive emotional states enhance learning. From a behavioral perspective, environments associated with positive affect function as conditioned reinforcers that increase approach behavior and engagement. From a neurobiological perspective, stress hormones such as cortisol impair hippocampal function and reduce the encoding of new memories, while positive emotional states promote neural plasticity and learning. Within behavior analysis specifically, research on reinforcer density, stimulus preference, and establishing operations supports the HRE framework. Clients who experience high rates of reinforcement in the treatment environment approach that environment and its associated stimuli, while clients who experience the environment as aversive develop avoidance repertoires. The practical implication is clear: investing in HRE conditions is not merely ethical — it directly improves the efficiency and effectiveness of behavioral instruction.
Data collection on HRE can be integrated into existing session data systems with minimal additional burden. A simple interval-based recording system — rating the client's state at regular intervals (e.g., every five minutes) as HRE, partially HRE, or not HRE — provides a continuous measure of the treatment environment's quality. More detailed systems might track individual indicators of happiness, relaxation, and engagement separately. The data serve multiple purposes. Trending HRE data across sessions reveals whether the treatment environment is improving, stable, or deteriorating over time. Correlating HRE data with skill acquisition data demonstrates the relationship between client state and learning outcomes. Session-by-session HRE data identify specific activities, transitions, or demand levels that consistently disrupt the HRE state, enabling targeted environmental modification.
Maintaining HRE during challenging activities requires graduated demand introduction, high-density reinforcement, and close monitoring of the client's state. Specific strategies include pairing non-preferred activities with preferred stimuli, breaking complex tasks into smaller steps that maintain a high success rate, embedding choice within required activities, using Premack-style contingencies that follow challenging activities with preferred ones, and monitoring for early indicators of distress so that modifications can be made before the HRE state is lost. The key principle is that HRE and instructional demands are not mutually exclusive. Clients can be happy, relaxed, and engaged while working on challenging goals — but this requires thoughtful programming that maintains the reinforcing properties of the treatment context throughout the session. The case studies in this course illustrate how practitioners have achieved this balance across diverse learner profiles.
Training caregivers and teachers in HRE implementation follows the same behavioral skills training model used for any skill: instruction (explaining the concept and its rationale), modeling (demonstrating HRE assessment and response strategies), rehearsal (providing opportunities for practice with feedback), and ongoing coaching. The training should include how to identify the specific HRE indicators for the individual learner, how to create environmental conditions that support HRE, how to recognize when HRE is being lost and what to do in response, and how to balance HRE with the demands of daily routines and schedules. Caregiver buy-in is critical and often requires education about the relationship between client state and outcomes. Many caregivers have been told that ABA should look structured and demanding, and may interpret HRE as 'not working' or 'just playing.' Presenting data showing that skill acquisition is faster and more durable when HRE is maintained can shift this perception.
HRE directly addresses several of the most common criticisms of ABA. The concern that ABA prioritizes compliance over wellbeing is addressed by HRE's establishment of client emotional state as a treatment priority. The concern that ABA is experienced as aversive by clients is addressed by the framework's requirement that treatment environments maintain positive client states. The concern that ABA does not respect individual differences is addressed by HRE's insistence on individualization — defining happiness, relaxation, and engagement based on each client's unique profile rather than applying neurotypical standards. HRE does not require abandoning the scientific rigor of behavior analysis. It requires applying that rigor to a broader set of outcomes — measuring not only whether skills are being acquired but whether the client's experience of treatment is positive. This integration of effectiveness and experiential quality represents the field's most constructive response to legitimate criticisms while maintaining its commitment to evidence-based practice.
The ABA Clubhouse has 60+ on-demand CEUs including ethics, supervision, and clinical topics like this one. Plus a new live CEU every Wednesday.
Ready to go deeper? This course covers this topic with structured learning objectives and CEU credit.
You Down With HRE?: Case Studies In Making ABA More Joyful For All — Cassidy Myers · 1 BACB Ethics CEUs · $10
Take This Course →1 BACB Ethics CEUs · $10 · BehaviorLive
Research-backed educational guide with practice recommendations
Side-by-side comparison with clinical decision framework
All behavior-analytic intervention is individualized. The information on this page is for educational purposes and does not constitute clinical advice. Treatment decisions should be informed by the best available published research, individualized assessment, and obtained with the informed consent of the client or their legal guardian. Behavior analysts are responsible for practicing within the boundaries of their competence and adhering to the BACB Ethics Code for Behavior Analysts.