ABAT Reinforcement Systems and Token Economies 4

Question 1

A behavior technician implements a token economy for a client with ASD who earns tokens for on-task behavior. After several weeks, the client begins hoarding tokens and refusing to exchange them for backup reinforcers, even preferred ones. Which advanced concept best explains this phenomenon and what is the MOST appropriate first intervention?

Accepted Answer

Conditioned reinforcer rigidity; assess whether tokens have acquired aversive properties through pairing with demand contexts

Answer

When tokens themselves become aversive or lose their conditioned reinforcing value due to consistent pairing with high-demand contexts, clients may hoard rather than exchange. This is distinct from backup reinforcer satiation (the client refuses even preferred backups) or simple token satiation. The first step is to assess whether the token itself has acquired aversive properties — perhaps through coercive demand sequences — before manipulating schedules or backups.

Question 2

In a token economy, a practitioner wants to systematically shift stimulus control from the token board to naturally occurring reinforcement. Which schedule-thinning sequence correctly follows best practice for promoting generalization and maintenance?

Accepted Answer

Continuous reinforcement → fixed ratio → variable ratio → natural community of reinforcement

Answer

Proper fading of a token economy follows the same logic as schedule thinning: begin with dense/continuous reinforcement to establish the behavior, move to fixed ratio schedules, then variable ratio schedules (which are most resistant to extinction), and ultimately bridge to naturally occurring reinforcers in the environment. Skipping the CRF→FR→VR progression risks ratio strain and behavioral collapse.

Question 3

A client's token economy includes response cost — losing tokens for problem behavior. Data show that problem behavior has increased since response cost was introduced. The MOST likely behavioral explanation that is distinct from extinction burst is:

Accepted Answer

Negative reinforcement is maintaining problem behavior by allowing the client to escape the token board setup

Answer

When response cost is introduced and problem behavior increases, a common overlooked mechanism is that the token economy setup itself (the board, demands, contingencies) has become an aversive stimulus. Problem behavior is negatively reinforced when it results in removal from or escape from the token economy context. This is distinct from an extinction burst (which is transient) and requires a functional assessment of what maintains the increased problem behavior.

Question 4

A BCBA is designing a group token economy in a classroom setting. Two students in the group have competing motivational operations: Student A is in a state of deprivation for social praise, while Student B is satiated on social praise. The BCBA decides to use the same backup reinforcer menu for both students. According to MO theory, what is the most likely outcome?

Accepted Answer

Student A will respond more robustly; Student B's token-earning behavior may be weaker due to reduced value of praise-paired tokens

Answer

Motivating operations alter both the reinforcing effectiveness of a stimulus AND the frequency of behavior that has been reinforced by that stimulus. If tokens have been repeatedly paired with social praise (which functions as a backup reinforcer for Student A but not Student B), the conditioned reinforcing value of the tokens will differ between students. Student A, in a state of deprivation for praise, will find praise-paired tokens more valuable, resulting in stronger token-earning behavior. This illustrates that MOs affect conditioned reinforcers, not just unconditioned ones.

Question 5

During a token economy intervention, a practitioner observes that a client earns tokens appropriately but the target behavior only occurs during token economy sessions and has not generalized. A colleague suggests using an 'indiscriminable contingency.' What does this involve and why would it address the generalization failure?

Accepted Answer

Removing visible discriminative stimuli (token boards, timers) while maintaining the contingency covertly, then fading to natural reinforcement

Answer

An indiscriminable contingency specifically refers to making the reinforcement contingency difficult to discriminate — often by removing overt SDs (like the token board) that signal when the contingency is in effect, while the contingency is still operating. When clients can clearly detect the presence or absence of the token economy (via visible boards, timers, observers), they may only perform when those SDs are present. Fading the overt components of the system while maintaining reinforcement bridges to naturalistic contexts.

(ABAT) Applied Behavior Analysis Test Practice Test

(ABAT) Applied Behavior Analysis Test Practice Test

ABAT Reinforcement Systems and Token Economies 4