Application of Conditioning and Conditioning Models I

Why Do I Care About Pavlovian Conditioning Anyway?

• Drug tolerance & other homeostatic functions

• Conditioning of the immune system Ex: Solvason et al (1988); Buske-Kirschbaum et al

(1994) odor (camphor) interpheron trials

eventually, camphor produced ↑ immune response

• Behavioral Therapy Treatment of phobias = extinction

i.e., systematic desensitization, flooding

drug treatment extinction of conditioned craving

Clinical application of Pavlovian conditioning principles

• Systematic desensitization increasingly intense/natural/real stimuli

anxiety hierarchy thematic spatial-temporal

cue-controlled relaxation counterconditioning

Clinical application of Pavlovian conditioning principles

Clinical application of Pavlovian conditioning principles

Clinical application of Pavlovian conditioning principles

• Systematic desensitization increasingly intense/natural/real stimuli

anxiety hierarchy thematic spatial-temporal

cue-controlled relaxation counterconditioning

• Flooding intense, prolonged exposure

latent inhibition in chemotherapy

Why Do I Care About Pavlovian Conditioning Anyway?

• Important aspect of your everyday life Often not even conscious of process Strong component of emotional responses

e.g., letter from an old friend e.g., picture preference / odor conditioning

• Examples: Feel hungry when you expect food Fearful responses to prior painful situations Learning what pleases/upsets people in your life Learning tendencies of opponents (and

sequences of moves) in games/contests

Why Do I Care About Pavlovian Conditioning Anyway?

newspaper potty time

Why Do I Care About Pavlovian Conditioning Anyway?

Video

• Human conditioning

http://www.youtube.com/watch?v=lnL4fjMzsSU

Why Formal Models?

• Heuristic value Predicts new findings

• Veridical mental picture?

• Why analyze these models here? importance of R-W model skills learning

formal modeling & analytical thinking

Models of Conditioning

• Hull’s Habit Strength & Drive Theory Formal description (1943, 1952) Evaluation of the model

Excitatory learning curve Problems…

Models of Conditioning

Hull’s (1943) Change in “Habit Strength”(Habit Strength) SHR = 1 – 10–0.0305N

(Reaction Potential) SER = SHR * D

(Reactive Inhibition) IR

(Conditioned Inhibition) SIR = –1 + 10–0.0305N

(Effective Reaction SĒR = (SHR * D ) – (IR + SIR )

Potential)

strength of association / amount of learning

drive

fatigue

inhibitory associations

Models of Conditioning

Hull’s (1952) Revision

(Effective Reaction Potential)

SĒR = ( SHR * D * V * K ) – (IR + SIR )

(V = stimulus-intensity dynamism; K = incentive motivation)

Models of Conditioning

Hull’s (1952) Revision

SĒR = ( SHR * D * V * K ) – (IR + SIR )

Models of Conditioning

Models of Conditioning

Criticisms of Hull’s Theories

• Complicated… Application of excitatory and inhibitory

functions deemed “arbitrary”

• Does not handle: Blocking Overshadowing Latent Inhibition Etc…

Models of Conditioning

• What should you know about Hull’s theory?

Parts of model – yes! “habit strength” (associative weight) “drive” “reactive inhibition” (fatigue) “conditioned inhibition” (separate)

Equations no… except…

SHR = 1 – 10–0.0305N (Habit strength)

+ pros & cons!

Models of Conditioning

• Spence’s anticipatory goal response

classical conditioning of stimulus-reward leads to approach responses to that situation

orienting to the CS! Example:

Justin goes to movie theater, gets great popcorn

Friday Popcorn!Theater

Go to theater

Drool