In a group contingency, one shared consequence (usually a reward) depends on the behavior of a group, or of people within it, instead of one learner at a time. It lets one teacher, coach, or staff member influence the behavior of a whole room.
Why it matters
Classrooms, group homes, day programs, and social skills groups often have one adult for many people, so individual plans for everyone are rarely practical. A well-designed group contingency lets you manage many people's behavior with one arrangement and can recruit peers as allies.
It can also backfire: a poor design can turn peers against one person or let one member block the reward for everyone. For this task, practice two decisions: name the type of group contingency in a described situation, and pick the safest design change when something goes wrong.
Key ideas
The type is defined by one question: whose behavior decides who gets the reinforcer?
- Independent. The same contingency and criterion apply to everyone, but each person earns (or misses) the reinforcer based on their own behavior. "Anyone who finishes the worksheet with 80% accuracy earns 10 minutes of free time." One person's result has no effect on anyone else's.
- Dependent. The whole group's access to the reinforcer depends on the behavior of one person or a small subset of the group. "If Malik turns in his homework every day this week, the class gets a game on Friday." This is sometimes called a hero procedure, because the target person earns the reward for everyone.
- Interdependent. Everyone's access depends on the performance of the group as a whole. Each member must meet the criterion, or the group must meet it collectively (for example, a class total or class average). It works as an all-or-none arrangement: the group earns the reward together or no one does.
Practical guidelines for any group contingency:
- Pick a strong reinforcer that works for most members. Letting the group choose from a menu helps.
- Define the target behavior clearly and think about related behavior that may change too, good or bad.
- Set a criterion every member can reach. Before you build a dependent or interdependent contingency, make sure the target behavior is something each relevant person can already do. If someone has a skill deficit, teach the skill first.
- Watch individual data, not just the group result. A group total can look great while one member never meets criterion.
- Choose the type that fits the goal. An independent arrangement suits members whose skills differ widely; an interdependent one can encourage peers to help each other.
- Combine with other procedures when needed, such as an individual plan for one learner alongside a classwide game.
Definitions
- Group contingency: an arrangement in which the same consequence, usually a reward, depends on the behavior of one member, some members, or all members of a group.
- Independent group contingency: one contingency is presented to all members, and each person's reinforcement depends only on their own performance.
- Dependent group contingency: the group's reinforcement depends on the performance of one person or a selected subset.
- Interdependent group contingency: every member's reinforcement depends on the group as a whole meeting the criterion.
- Good Behavior Game: a well-studied classroom procedure in which teams earn a reward if they stay at or below a set number of marks for rule violations; an interdependent arrangement at the team level.
Examples from a session
Same goal, three designs
- Independent (elementary school): Ms. Alvarez tells her second graders that anyone who reads for 20 minutes and logs it earns a sticker toward a book choice. Priya earns it; Sam does not. Sam's result has no effect on Priya.
- Dependent (middle school): Jonah, 13, rarely joins class discussions. He answers readily in small groups, so the skill is there. His teacher announces that if Jonah answers at least two questions today, the class gets five extra minutes of break. Classmates encourage him and cheer when he answers.
- Interdependent (adult day program): At a vocational program, staff tell a team of five adults that if the team packs 60 kits by noon, everyone picks the lunch music. Members start helping each other with packing steps.
- Good Behavior Game (third grade): The class is split into two teams. The teacher marks each rule violation on the board. Every team with four or fewer marks at the end of the lesson earns a short dance break. Both teams can win.
- Non-example (clinic): Aisha, 14, earns a preferred activity for finishing her own work, and no one else's access changes. This is an individual contingency, not a group contingency: no shared consequence depends on group behavior.
Common mistakes / exam traps
- Harmful peer pressure. When one person's behavior can cost everyone the reward, peers may tease, threaten, or blame that person. Monitor for this and adjust right away.
- Sabotage. Some members may find it reinforcing to keep the group from winning. In that case, a common fix is to take that person out of the group arrangement and give them an individual contingency, while the group arrangement continues for the rest.
- Unreachable criteria. Setting the criterion at the level of the best performer, or targeting a skill someone has not learned, makes the arrangement unfair and usually ineffective.
Independent vs. interdependent
"Everyone hears the same rule" does not make it interdependent. Ask whose behavior decides each person's reinforcer. If each person earns or misses based only on their own behavior, it is independent. If everyone's access rides on the group as a whole (every member meeting criterion, or a class total or average), it is interdependent.
Dependent vs. interdependent
In both, the whole group gets the reward, so who receives it does not tell them apart. Look at whose behavior decides it: one person or a selected few (dependent, the hero procedure) or the whole group (interdependent).
Quick check
A high school chemistry teacher tells her class that if the class average on Friday's quiz is 85% or higher, everyone gets to skip Monday's homework. What type of group contingency is this?