Respondent Conditioning

Chapter Eight: Respondent Conditioning

Introduction to Respondent Conditioning

• Distinction between operant and respondent conditioning:

  • Operant Conditioning: Involves behaviors controlled by their consequences. Key concepts: reinforcement, extinction, punishment, stimulus control.

  • Respondent Conditioning: Involves behaviors controlled (elicited) by antecedent stimuli. Here, the focus is on the manipulation of antecedent stimuli rather than consequences.

Examples of Respondent Conditioning

Case Study: Carla in the Toy Factory

• Background: Carla operated a machine molding plastic parts for children's toys.

• Sequence of Events:

  • Sound of clicking when plastic enters the machine.

  • Following the clicking, a short blast of air from a pneumatic hose hits Carla in the face, causing her to blink.

• **Conditioned Response Development:

  • Initially, the clicking sound was neutral (NS).

  • The blast of air (unconditioned stimulus - US) leads to blinking (unconditioned response - UR).

  • After pairing, Carla starts blinking in response to the clicking sound alone (now conditioned stimulus - CS).

  • After maintenance removed the air blast, she continued to blink in response to the clicking sound for a few days before the response diminished. Conclusion: Carla’s blinking is an example of respondent conditioning, as her response was conditioned to the sound of the machine clicking.

Case Study: Julio's Tunnel Experience

• Background: Julio takes a bus and walks through a dark tunnel to reach home.

• Incidents:

  • Experience of being startled by various events (large rat, threatening teenagers, an aggressive homeless person) leads to anxiety-related physiological responses (increased heart rate, muscle tension, rapid breathing).

  • Post incidents, proximity to the tunnel itself triggers these fear responses (now a conditioned response - CR) even when no immediate threat is present.

Defining Respondent Conditioning

• **Fundamental Concepts:

• Unconditioned Responses (URs):** Responses elicited by unconditioned stimuli (USs) without prior conditioning. Examples include:

  • Sucking reflex from nipple contact

  • Salivation upon food in mouth

  • Gagging and coughing from foreign objects

• Unconditioned Stimulus (US): A stimulus that naturally and automatically triggers a response (e.g., food causing salivation).

• Conditioned Stimulus (CS): A previously neutral stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response.

• Conditioned Response (CR): A learned response to a previously neutral stimulus that has become a conditioned stimulus.

Table of Unconditioned Responses (Table 8-1)

• Survival Value of URs:

  • Examples include: sucking for nutrition, salivation aiding digestion, gag reflex preventing choking, and autonomic responses preparing for danger.

Respondent Conditioning Process

• Respondent conditioning occurs when an NS is paired with a US, leading to a CR similar to the UR.

• Key Points:

  • Respondent conditioning is also referred to as classical conditioning or Pavlovian conditioning.

  • Example Case: Ivan Pavlov’s experiments demonstrate that a metronome (NS) paired with meat powder (US) eventually leads to the dog salivating (CR) in response to the metronome alone (now CS).

• Identifying Variables in Carla’s Example:

  • US: Blast of air

  • UR: Blinking

  • CS: Clicking sound

  • CR: Blinking when hearing the clicking sound

Timing of Stimulus Presentation

• Temporal relationships crucial for effective conditioning.

  • Ideal: US occurs immediately after the NS.

  • Types of Conditioning:

  • Trace Conditioning: NS precedes US; NS ends before US starts.

  • Delay Conditioning: NS presented, then US presented before NS ends.

  • Simultaneous Conditioning: NS and US presented at the same time.

  • Backward Conditioning: US presented before NS; less effective in producing a CR.

• Taste Aversion Example: Murphy drinking spoiled milk leads to nausea (US) and avoidance of milk taste (CS), showcasing latency in response but effective conditioning.

Higher-Order Conditioning

• Higher-order conditioning occurs when a NS pairs with an already-established CS leading to new CSs.

• Example: A light (NS) flashing with a clicking sound (CS), leading to blinking in response to the light even without the clicking sound present.

Conditioned Emotional Responses (CERs)

• CERs are conditioned emotional responses and can be positive or negative. Watson and Rayner (1920) demonstrated this through Little Albert:

  • Initially, Albert showed no fear towards a white rat (NS).

  • Pairing loud noise (US) with the rat (NS) led to fear response (CR).

  • Fear responses are examples of negative CERs, while emotions like happiness can be positive CERs.

Extinction of Conditioned Responses

• Respondent Extinction: Occurs when CS is repeatedly presented without the US, leading to diminished CR over time.

• Example: Pavlov's dog salivates less to the metronome if the meat powder is never presented after the sound.

• Implication for Julio: To extinguish his fear, he must encounter the tunnel (CS) without any frightening incidents (US) occurring.

Spontaneous Recovery

• Definition: After extinction, if the CS is presented later, the CR may reoccur, though at a diminished level.

• Example: Pavlov’s dog salivated again when the metronome was presented after a period of extinction.

Conclusion

• Understanding respondent conditioning is essential in both theoretical and practical applications, showcasing the nuances of learned behavior through pairing stimuli. ---

Introduction to Respondent Conditioning

Respondent conditioning, distinct from operant conditioning, involves behaviors that are controlled by antecedent stimuli rather than consequences. While operant conditioning emphasizes reinforcement, extinction, punishment, and stimulus control, respondent conditioning focuses on the manipulation of antecedent stimuli.

Examples of Respondent Conditioning

A case study of Carla in a toy factory illustrates respondent conditioning. Carla operated a machine molding plastic parts for children's toys. The sequence of events began with a clicking sound when plastic entered the machine. Following this sound, a blast of air from a pneumatic hose hit Carla in the face, causing her to blink. Initially, the clicking sound was a neutral stimulus (NS), and the blast of air served as an unconditioned stimulus (US) that elicited an unconditioned response (UR) of blinking. After several pairings, Carla began to blink in response to the clicking sound alone, which subsequently became a conditioned stimulus (CS). Even after the air blast was removed, she continued to blink in response to the clicking sound for a few days before the response diminished, demonstrating her blinking as a conditioned response.

Another example involves Julio's tunnel experience. Julio would take a bus and walk through a dark tunnel to reach home, during which he experienced startling incidents, which led to anxiety-related physiological responses such as increased heart rate. Consequently, the proximity to the tunnel itself became a conditioned response (CR), eliciting fear even in the absence of an immediate threat.

Defining Respondent Conditioning

Fundamental concepts of respondent conditioning include unconditioned responses (URs), which are responses triggered by unconditioned stimuli (USs) without previous conditioning. Examples are the sucking reflex from nipple contact and salivation when food is placed in the mouth. A US is a stimulus that automatically elicits a response, whereas a conditioned stimulus (CS) is a previously neutral stimulus that, following association with a US, triggers a conditioned response (CR). A CR is thus a learned response to a CS. The survival value of URs is significant, such as sucking for nutrition and salivation aiding digestion.

Respondent Conditioning Process

Respondent conditioning happens when an NS is paired with a US, resulting in a CR similar to the UR. Notably, respondent conditioning is also referred to as classical conditioning or Pavlovian conditioning. Ivan Pavlov’s experiments provide an example, where a metronome (NS) paired with meat powder (US) eventually led to dogs salivating (CR) in response to the metronome alone (now CS). In Carla’s case, the variables can be identified as follows: US is the blast of air, UR is blinking, CS is the clicking sound, and CR is blinking in response to the clicking sound.

Timing of Stimulus Presentation

The temporal relationships between stimuli are critical for effective conditioning. Ideally, the US should occur immediately after the NS. Various types of conditioning exist: trace conditioning (NS precedes US), delay conditioning (NS is presented and US comes before NS ends), simultaneous conditioning (NS and US are presented together), and backward conditioning (US precedes NS, often less effective). For example, Murphy may develop a taste aversion to milk after experiencing nausea as a US from spoiled milk, which illustrates conditioning despite a latency in response.

Higher-Order Conditioning

Higher-order conditioning occurs when a NS pairs with an already-established CS, resulting in new CSs. For instance, if a light (NS) flashes alongside a clicking sound (CS), blinking can occur in response to the light even without the clicking sound present.

Conditioned Emotional Responses (CERs)

Conditioned emotional responses (CERs) can be both positive and negative. Watson and Rayner’s 1920 experiment with Little Albert showcased this; Albert initially showed no fear towards a white rat (NS), but after pairing it with a loud noise (US), he developed a fear response (CR). Thus, fear responses demonstrate negative CERs, while positive emotions, such as happiness, represent positive CERs.

Extinction of Conditioned Responses

Respondent extinction occurs when the CS is repeatedly presented without the US, leading to a diminished CR over time. For example, Pavlov’s dog would salivate less to the metronome if the meat powder was never presented after the sound. In Julio’s case, to extinguish his fear, he would need to encounter the tunnel (CS) without any frightening incidents (US) occurring.

Spontaneous Recovery

Spontaneous recovery, defined as the reoccurrence of a CR after a period of extinction, can occur when the CS is presented again, though typically at a diminished level. For example, Pavlov’s dog salivated again when the metronome was presented after extinction.

Conclusion

In summary, understanding respondent conditioning is vital for both theoretical frameworks and practical applications, highlighting the complexities of learned behaviors through the pairing of stimuli.