Secondary Reinforcement in AP Psychology

In AP Psychology, a secondary (conditioned) reinforcer is a stimulus like money, grades, or praise that has no built-in value. It becomes reinforcing because it has been paired with a primary reinforcer, such as food or water, that satisfies a biological need.

What is Secondary Reinforcement?

Secondary reinforcement happens when a stimulus strengthens a behavior only because it has been linked to something that is naturally rewarding. You don't need a dollar bill the way you need food. A dollar is just paper. But money has been paired over and over with things you do need, like food, shelter, and comfort, so now it reinforces behavior all on its own. That's why secondary reinforcers are also called conditioned reinforcers. Their power is learned.

The CED puts this right in the essential knowledge for operant conditioning: "Reinforcers can be primary or secondary." A primary reinforcer satisfies a biological need without any learning (food, water, warmth). A secondary reinforcer gets its value secondhand. Common examples on the exam include money, grades, gold stars, praise, tokens, and the click of a clicker in animal training. Think of it this way. A secondary reinforcer is an IOU for a primary reinforcer.

Why Secondary Reinforcement matters in AP® Psychology

Secondary reinforcement lives in Unit 3: Development and Learning, under Topic 3.8 Operant Conditioning. It directly supports learning objective AP Psych 3.8.A, "Explain how operant conditioning applies to behavior and mental processes." The essential knowledge names the primary vs. secondary distinction as a core piece of how reinforcement works, right alongside positive vs. negative reinforcement and the Law of Effect.

It matters because almost all human reinforcement in the real world is secondary. Paychecks, report cards, likes on a post, and a coach's "nice job" all shape behavior without feeding a single biological need. If an exam question asks you to apply operant conditioning to a classroom, workplace, or parenting scenario, you'll almost always be working with secondary reinforcers. For the full picture of operant conditioning, head up to the Topic 3.8 study guide.

How Secondary Reinforcement connects across the course

Primary Reinforcement (Unit 3)

Secondary reinforcers can't exist without primary ones. A secondary reinforcer borrows its power from a primary reinforcer through repeated pairing. If that link breaks, it can lose its value. A token that never buys anything eventually stops working.

Classical Conditioning (Unit 3)

Here's the neat twist. A secondary reinforcer gets its value through a classical conditioning process. A neutral stimulus (the clicker) is paired with food until it means something. Then it gets used in operant conditioning. So secondary reinforcement is where the two types of learning shake hands.

Instinctive Drift (Unit 3)

Breland and Breland trained raccoons to drop coins (a secondary reinforcer route to food) into a container. The raccoons started rubbing the coins together like they would wash food. Because the coins were linked to food, instinct took over. Learned reinforcement has biological limits.

Shaping and Reinforcement Schedules (Unit 3)

Trainers shape behavior through successive approximations, and a secondary reinforcer like a click lets them reward the exact right moment instantly. Secondary reinforcers also power schedules like fixed-ratio. A factory worker paid per 10 items finished is earning money, not food.

Is Secondary Reinforcement on the AP® Psychology exam?

On multiple-choice questions, you'll usually see a scenario and have to identify what type of reinforcer is at work. A teacher gives stickers, a parent hands out allowance, a dog trainer uses a clicker. Your job is to recognize that these have no built-in value and are secondary. You'll also see answer choices that try to trap you into mixing up "secondary" with "negative," so check whether the question is asking where the value comes from (primary vs. secondary) or whether something is added or removed (positive vs. negative).

Secondary reinforcement also shows up indirectly. A practice question on Breland and Breland's raccoons, who were trained to deposit coins but started rubbing them together, asks what this failure of conditioning shows. The answer is instinctive drift. You need to see that the coins were a learned reinforcer standing in for food, and that biology pulled the animals back toward food-handling behavior.

No released FRQ has used this term verbatim. Still, it fits naturally into FRQ prompts that ask you to apply operant conditioning to a realistic scenario. A strong answer names the reinforcer, labels it secondary, and explains why. For example, "the points are a secondary reinforcer because they gain value by being exchanged for prizes."

Secondary Reinforcement vs Primary Reinforcement

The difference is all about whether the value is learned. A primary reinforcer (food, water, warmth, relief from pain) is rewarding with no learning at all because it meets a biological need. A secondary reinforcer (money, grades, praise, tokens) is only rewarding because you've learned to link it to primary reinforcers. Quick test: would a newborn care about it? If yes, it's primary. If no, it's secondary.

Key things to remember about Secondary Reinforcement

• A secondary reinforcer is a stimulus that becomes rewarding only because it has been paired with a primary reinforcer.

• Secondary reinforcers are also called conditioned reinforcers, and common examples include money, grades, praise, tokens, and a trainer's clicker.

• Primary reinforcers satisfy biological needs without learning, while secondary reinforcers get their value through learning.

• Primary vs. secondary describes where a reinforcer's value comes from, which is a separate question from positive vs. negative, which describes whether something is added or removed.

• Secondary reinforcement connects the two kinds of learning because the reinforcer gains value through classical conditioning and is then used in operant conditioning.

• Breland and Breland's coin-rubbing raccoons show that learned reinforcement can be overridden by instinctive drift.

Frequently asked questions about Secondary Reinforcement

What is secondary reinforcement in AP Psychology?

Secondary reinforcement is when a stimulus with no built-in value, like money or a good grade, strengthens behavior because it has been paired with a primary reinforcer. It falls under Topic 3.8 Operant Conditioning and learning objective AP Psych 3.8.A.

How is secondary reinforcement different from primary reinforcement?

Primary reinforcers, like food and water, are naturally rewarding because they meet biological needs. Secondary reinforcers, like money or praise, are rewarding only because you've learned to associate them with primary reinforcers.

Is secondary reinforcement the same as negative reinforcement?

No. Secondary refers to a reinforcer whose value is learned, while negative refers to strengthening a behavior by removing something unpleasant. These are two different ways of classifying reinforcement, and a reinforcer can be described on both dimensions.

Is money a primary or secondary reinforcer?

Money is a secondary reinforcer, and it's the classic exam example. It has no biological value on its own, but it reinforces behavior because it can be exchanged for primary reinforcers like food and shelter.

What do Breland and Breland's raccoons have to do with secondary reinforcement?

The raccoons were trained to deposit coins for a food reward, but they began rubbing the coins together like they were washing food. This shows instinctive drift, where an animal's natural behaviors override learned behaviors tied to a reinforcer.