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Non contingent reinforcement (NCR) is planned access to a reinforcer based on time passing rather than on a learner response. The planned item, activity, attention, or break is delivered under a time-based rule instead of being earned through behavior.
How Non Contingent Reinforcement Works#
NCR is one of the procedures named under D.2. A planned antecedent interventions guide will place it alongside the other interventions named in that task.
The RBT Test Content Outline (3rd ed.) identifies NCR within D.2, which states that RBTs implement antecedent interventions. In a written NCR procedure, the key feature is that delivery is based on time rather than on correct performance, work completion, requesting, compliance, or an interval without behavior.
For example, a fictional written plan might direct staff to provide brief attention at time-based intervals whether the learner is working, talking, requesting, or engaging in the behavior being addressed. The learner does not need to meet a response requirement before the scheduled delivery.
A written NCR procedure may identify several practical details:
- What to provide. The plan may name attention, a break, music, an activity, or another planned reinforcer.
- When to provide it. The plan may use a fixed or variable time-based interval.
- How long access lasts. The procedure may state how long the learner receives the planned item or activity.
- What to record. The plan may direct the RBT to record timing, behavior, implementation information, or other session details.
- What delivery rule applies. The rule should state whether elapsed time alone determines access.
These are fictional study examples. For real clients, follow your supervising BCBA’s written plan and seek direction before changing the procedure. This aligns with RBT Ethics Code 2.0, section 2.02.
Visit ABA terms to compare NCR with other ABA vocabulary.
Fixed-Time and Variable-Time NCR#
A fixed-time NCR schedule delivers the planned reinforcer after the same amount of elapsed time each time. In a fictional plan, staff might provide one minute of attention every five minutes during independent work. The interval remains the same throughout that example.
A variable-time NCR schedule also delivers the planned reinforcer based on time, but the intervals vary. One interval may be shorter than the next. The defining feature remains unchanged: the learner does not have to perform a particular response to receive the planned reinforcer.
When deciding whether an arrangement is NCR, ask: What must occur before the planned reinforcer is delivered? If the answer is that time passes or a timer signals, the arrangement may be NCR. If the answer is that the learner complies, requests, completes work, answers correctly, or avoids behavior, access is contingent on behavior.
Examples and Non-Examples#
In these fictional examples, assume the written plan identifies the listed items or activities as planned reinforcers.
| Situation | NCR? | Why |
|---|---|---|
| Staff offer a short conversation whenever a timer signals, regardless of calling out. | Yes | Elapsed time controls delivery. |
| A learner receives a break after completing assigned work. | No | Work completion is required. |
| Staff give music after an interval with no yelling and restart after yelling. | No | The absence of yelling controls access. |
| A timer signals at changing intervals and staff provide drawing materials without a request. | Yes | Time controls delivery despite varying intervals. |
| An RBT gives praise after each correct answer. | No | Correct responding produces the consequence. |
A timer is a tool that can be used in more than one procedure. It may be part of NCR, interval DRO, a work period, a delay, or another written routine. Focus on the rule for delivering the planned reinforcer rather than on the presence of a timer.
NCR Versus DRO#
NCR and differential reinforcement of other behavior can look similar because both may involve timed intervals and planned reinforcers. Their delivery rules are different.
| Procedure | Delivery rule | Role of target behavior |
|---|---|---|
| NCR | Deliver the planned reinforcer when time arrives. | Target behavior does not determine access. |
| Interval DRO | Deliver after an interval without the target behavior. | Target behavior affects whether access occurs. |
Consider two fictional music-access rules:
- NCR rule: “Offer music for two minutes every six minutes, independent of calling out.”
- Interval-DRO rule: “Offer music after six minutes without calling out; restart timing if calling out occurs.”
Under the NCR rule, calling out shortly before the interval ends does not alter the planned delivery. Under the interval-DRO rule, calling out changes whether the learner met the condition for music. Both procedures use time, but only the second makes access dependent on the absence of target behavior.
Go to differential reinforcement and FCT to compare behavior-dependent reinforcement procedures. Read schedules of reinforcement when you need help distinguishing schedule labels.
Worked Implementation Scenario#
A fictional supervisor plan identifies puzzle access as the planned reinforcer during independent work and labels the intervention NCR. The RBT uses the plan’s time-based delivery rule. The learner hums shortly before the next delivery time.
Because the procedure is NCR, humming does not become a new condition for access. The RBT follows the written timing and delivery directions, then completes any documentation required by the plan. Delaying access until quiet behavior occurs would create a different delivery condition.
Now consider a different fictional rule: “Offer puzzle access after five minutes without humming; restart the interval if humming occurs.” This is not NCR because puzzle access depends on an interval without humming. The learner’s behavior affects whether the planned reinforcer is delivered.
Study Checks for a Written Plan#
Use these questions to identify the procedure described in a fictional plan:
- Is delivery based on elapsed time or learner behavior?
- Does the plan direct staff to restart timing after target behavior?
- Must the learner comply, request, complete work, respond correctly, or avoid behavior?
- What planned reinforcer and duration does the plan specify?
- What data and reporting directions does the plan include?
NCR does not mean unrestricted access to every preferred item. A procedure may specify brief access at planned times. The defining feature is the time-based delivery condition, not unlimited access.
Practice Questions#
1. In a fictional supervisor-planned session, an RBT is setting up NCR with staff attention as the planned reinforcer. Sam is beginning a work activity. Which arrangement best implements NCR?
A Completed work makes attention dependent on behavior.
B Quiet time becomes a condition for attention.
C Correct. The timer signal determines delivery rather than a response from Sam.
D A request makes access dependent on Sam’s behavior.
2. A fictional supervisor plan names NCR as the antecedent intervention and identifies a brief break as the planned reinforcer. During work, the learner refuses a task. Which action best implements the NCR arrangement?
A Restarting after refusal makes the next break depend on the learner’s behavior.
B Correct. The break is delivered according to time rather than refusal.
C Quiet behavior would add a condition for receiving the break.
D Worksheet completion would make the break response-dependent.
3. In a fictional NCR plan, music is the planned reinforcer during an art activity. The learner yells before the next timer signal. Which action would fail to implement the NCR delivery rule?
A Correct. Restarting after yelling makes behavior affect access to music.
B Keeping the interval unchanged does not add a behavior condition.
C Recording the signal does not change the delivery condition.
D Preparing music does not make access behavior-dependent.
4. A fictional written NCR plan identifies puzzle access as the planned reinforcer during work. The learner hums shortly before the timer signals. Which action best implements the stated procedure?
A Quiet work would become a condition for puzzle access.
B Restarting the timer would make humming affect access.
C A spoken request would make access response-dependent.
D Correct. The timer signal determines delivery under the stated NCR procedure.
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FAQ
What is noncontingent reinforcement in simple terms?
Noncontingent reinforcement is planned access to a reinforcer because time has passed, rather than because the learner performed a specified response. The written plan identifies what staff provide and when they provide it.
Is NCR the same as free access to an item?
Not necessarily. NCR may involve brief access at planned times rather than continuous access. The defining feature is that delivery of the planned reinforcer is not dependent on a target behavior.
How is NCR different from contingent reinforcement?
Contingent reinforcement makes access dependent on a learner response or behavior criterion. NCR provides planned access according to time. Requiring compliance, a request, work completion, correct responding, or a specified absence of behavior makes access behavior-dependent.
Why is NCR an antecedent intervention?
The RBT Test Content Outline (3rd ed.) lists NCR as an example under D.2, “Implement antecedent interventions.” NCR arranges planned access according to time instead of waiting for a target response to occur.