Learning Theory Flashcards
2 types of learning processes
Classical conditioning and operant conditioning
What is Classical conditioning
How our behaviour becomes associated with stimuli in the environment;
Stimuli response associations;
Dogs will naturally respond by salivating when given food;
Pavlovian conditioning (classical conditioning)
Dogs started to salivate in response to other stimuli presented just before their food (bell to signal feeding time);
Dogs don’t naturally salivate to the sound of bells - they had learned a new behaviour
3 stages of classical conditioning
1. Before learning Unconditioned stimulus (UCS) gives unconditioned response (UCR);
2. During learning Conditioned stimulus (CS) + UCS gives UCR;
- After learning
CS gives Conditioned response (CR)
Temporal contiguity
Relationship between CS and UCS - how closely in time the two are presented;
Close temporal contiguity is a critical factor for conditioning;
Variations in it affect strength of conditioning;
Generalisation in Classical conditioning
CR transfers to other stimuli similar to the original CS without further conditioning;
The more similar the novel stimuli to the original CS, the more likely it is for generalisation to occur;
Increasingly different CS will lead to discrimination;
Has adaptive (survival advantages);
Extinction (‘Unlearning”)
Learned behaviours become weaker until no longer produced;
Occurs when CS is repeatedly presented without UCS;
Application of classical conditioning
Behaviour therapy:
Understand how behaviours are learned;
Understand how behaviours are maintained;
Modify or change behaviours;
Understanding psychopathology and treating disordered/ maladaptive behaviour - conditioning of emotional reactions and physiological responses
Phobias
Classically conditioned fears to previously neutral stimuli;
Conditioned phobias and avoidance
Patients don’t put themselves in a position where behaviour will extinguish (as they will avoid exposure to their aversive stimuli);
Flooding
Based on extinction;
Placed in most feared situation;
Flooding is the least preferred option;
Counter conditioning
Extinguishing response to a particular stimulus by reinforcing a competing response;
Replaces maladaptive behaviours;
Understanding behaviour (classical conditioning)
Phobias;
Anticipatory nausea/ vomiting in cancer patients due to chemotherapy
Changing behaviour (Classical conditioning)
Counter-conditioning;
Flooding;
Systematic desensitisation;
Changing behaviour - systematic desensitisation
Construct hierarchy of events related to original stimulus which elicits maladaptive response; Eg. Nausea in chemotherapy patients; 1. Driving to clinic; 2. Entering treatment room 3. Seeing clinic nurse;
Train patients to associate alternate response with these events
Behaviour therapy applications
Virtual reality -
Graded exposure and habitualisation to vivid experience through artificially created env - no costs of real exposure;
Particularly effective in post-traumatic stress disorder; anxiety disorder (and phobias)
What is operant (Instrumental) conditioning?
Learning associations between behaviour and its consequences;
How consequences affect behaviour;
Learning a response by operating on env;
Example of operant conditioning
Skinner box -
Chamber with lever that an animal presses to release food or turn on/off electric shock;
A-B-C of operant conditioning
Antecedent stimulus - conditions/ situation in which the behaviour occurs;
B - behaviours (operants) - behavioural response;
Example: rat presses lever;
C- consequence - what happens as a result of operant behaviour;
Example: food is given;
Consequences of behaviour
Reinforcement and punishment
What is reinforcement? Types of reinforcement
Strengths behaviour - more likely to occur in future;
Positive - presentation of desirable stimulus - praising good behaviour;
Negative - removal of undesirable stimulus - toothache relieved by going to Dentist;
Punishment
Types of punishment
Weakens behaviour. Less likely to occur in future
Positive punishment - presentation of undesirable stimulus - smacking for bad behaviour;
Negative - removal of desirable stimulus - response cost - removal of TV for bad behaviour;
Temporal contiguity in operant behaviour
Important and makes it more effective
Generalisation in operant conditioning
Conditioned behaviour transfers to antecedent situations or stimuli that are similar to the original one;
Occurs without further conditioning after generalisation;