Psychology 281
Principles of Behaviour

Lecture 3 -- May 13, 1997

Respondent Conditioning

Lecture Objectives

Respondent Conditioning

Predicting Events

Learning the Environment

Unconditioned Terms

Conditioned Terms

The Basic Process

Graphical Representation

Respondent Conditioning

Real World Problems

Computational Problems

An Example

Problem and Solution

Experimental Paradigms

Eyeblink Conditioning

Eyeblink Apparatus

Typical Experimental Apparatus

Eyeblink Results

Conditioned Suppression

Suppression Ratio

CS response

CS response + pre-CS response

Skin Conductance Response

Taste Aversion

Taste Aversion Experiments

Practical Taste Aversion

Respondent Acquisition

Is the CR equal to the UR?

Law of Intensity Magnitude

US-UR Relationship

CS-CR Relationship

Law of Latency

US-UR Relationship

CS-CR Relationship

Law of Threshold

Law of Temporal Summation

Law of Reflex Fatigue

S-R or S-S Connections?

S-S Connections

Temporal Relations

Simultaneous Conditioning

Short-Delay Conditioning

Long-Delay Conditioning

Trace Conditioning

Backwards Conditioning

Respondent Extinction

Spontaneous Recovery

Inhibition and Disinhibition

Rapid Reacquisition

Conditioned Inhibition

Summation Test: After initial conditioning of the CS+ (tone) and the CS- (light), a third CS is developed into an excitatory CS (say mechanical stimulation). If we then pair the light with the mechanical stimulation and the light causes reduction of the CR, then the light is a conditioned inhibitor.

Retardation Test: We can also measure how long it takes to turn a CS- into a CS+. For example, after initial conditioning of the CS+ (tone) and the CS- (light), we then train the light to be an excitatory conditioned stimulus. If it takes longer for the light CS- to be trained to a CS+ than it takes for a control group that did not have the initial pairing of light and tone, the we can be sure that the light in the first case was a CS-.

Respondent Generalization

Respondent Discrimination



A control group that does not have the initial tone-shock pairing, but that does have the compound tone-light-shock pairing, will show a CER to the light alone.

Sensory Preconditioning

Second-Order Conditioning

Lecture Objectives