12.4 Group Contingencies: Independent, Interdependent, and Dependent Arrangements

12.4 Group Contingencies: Independent, Interdependent, and Dependent Arrangements

Blueprint Anchor: QABA lists "group contingencies" as sub-topic 7 of Domain F, Behavior Reduction Interventions. Expect items that require you to name the arrangement from a scenario description and to identify the ethical hazard specific to that arrangement.

A group contingency is an arrangement in which a common consequence is made available to a group of individuals based on the behavior of one member, some members, or all members. Group contingencies are efficient - a single supervisor can manage one contingency for 24 students instead of 24 individual plans - and they recruit peer-mediated reinforcement, which is often more powerful than anything an adult can deliver. They are also the reduction procedure most likely to produce a serious social side effect if designed carelessly.

Two questions define every arrangement:

1. Whose behavior is measured against the criterion?
2. Who receives the reinforcer when the criterion is met?

---

The Three Arrangements

Independent Group Contingency

The same criterion is announced to everyone, but each person's reinforcement depends only on their own performance.

Example: "Anyone who completes 15 of 20 math problems earns 10 minutes of free choice." Ten students earn it, six do not.

• Strengths: No peer pressure, no unearned reinforcement, no sabotage risk. Simple, fair, and ethically the safest.
• Limitations: Recruits no peer support at all, and does nothing for students for whom the criterion is out of reach.
• Use it when: you want efficiency without social side effects, or when the group includes members with widely varying skill levels.

Interdependent Group Contingency

The group must perform as a unit. The criterion may be that every member meets a standard, that a group total is reached, that the group average meets a standard, or that a randomly selected member's performance meets the standard.

Example: "When the class earns a combined 100 points of on-task time, we get an extra recess."

• Strengths: Strongest recruitment of peer prompting, encouragement, and cooperation. Builds group cohesion. This is where group contingencies earn their reputation.
• Limitations: A member who prefers the alternative to the reinforcer can deliberately sabotage the contingency and hold the group hostage. Low-performing members may face peer resentment.
• Randomizing components is the standard safeguard. Randomly selecting which behavior counts, which criterion applies, or whose data will be scored - without announcing it in advance - defeats sabotage, because no member knows whether their behavior will be the one that counts.

Dependent Group Contingency

Sometimes called the hero procedure. The entire group's reinforcement depends on the performance of one individual or a small subset.

Example: "If Marcus completes his assignment, the whole class earns 5 minutes of music."

• Strengths: Can convert a peer-rejected student into a source of group benefit and dramatically increase peer attention and encouragement toward that student.
• Limitations and hazards: This arrangement carries the highest risk of harm. If the target student fails, the group loses reinforcement because of them, and the predictable result is blame, resentment, teasing, or harassment. It also publicly identifies the student as different.
• Required safeguards before a QASP-S recommends it:
  1. Set a criterion the student can already meet. Start below current performance so early sessions are near-certain successes.
  2. Obtain informed consent from the student and family, and assent from the student, before making them the group's contingency.
  3. Consider keeping the identity of the target unknown by using an unannounced randomly selected student, which preserves peer encouragement while removing the singling-out.
  4. Monitor peer behavior as a dependent variable. Track teasing and blaming directly rather than assuming it is not happening.
  5. Pre-specify a discontinuation rule. If any peer harassment occurs, the arrangement stops.

---

The Good Behavior Game

The Good Behavior Game (GBG), introduced by Barrish, Saunders, and Wolf in 1969, is the most replicated interdependent group contingency in the literature. The class is divided into teams; each team receives a mark when any member emits a target disruptive behavior; teams finishing under a criterion number of marks win.

Its design is instructive. GBG uses multiple winning teams (all teams under criterion win, so teams do not compete against each other), an achievable criterion, and short intervals with frequent opportunities to succeed. Those three features convert a potentially adversarial structure into a cooperative one, and they are exactly the design decisions a QASP-S should replicate.

Exam framing: GBG is interdependent, not dependent. Each team's outcome depends on all its own members, and no single named individual controls the whole class's access.

---

Selecting an Arrangement

Is one student's behavior the specific target,
and would peer encouragement help them?
    |-- Yes --> Dependent -- ONLY with consent, achievable criterion,
    |                        harassment monitoring, and a stop rule.
    |                        Prefer an unannounced random target.
    |
    |-- No, the whole group needs to improve, and
    |   peer cooperation would help
    |        --> Interdependent (randomize components to block sabotage)
    |
    |-- No, and peer pressure would be harmful,
        or skill levels vary widely
             --> Independent

The Three Failure Modes to Recognize on the Exam

1. Unearned reinforcement. Under interdependent and dependent arrangements, members who did nothing still access the reinforcer. This is usually acceptable but becomes a problem if it maintains passivity; pair the contingency with individual accountability if so.
2. Sabotage. A member who values the alternative more than the reinforcer intentionally blocks the group. Randomization is the first-line fix; an individualized contingency for that member is the second.
3. Undue social pressure. Peer coercion, blaming, or harassment. This is an ethical stop condition, not a tolerable side effect. A QASP-S who observes it must halt the contingency and redesign, and should document the decision in the supervision record.

Finally, remember the standing rule that governs all of Domain F: group contingencies are consequence arrangements, and QABA's ethical considerations sub-topic requires that reinforcement-based, function-informed, least restrictive options be exhausted first. A group contingency layered onto an environment that has not addressed antecedents or taught replacement skills is a shortcut, not a plan.