Week 9 and 10 PSYC Flashcards
Salience Bias
We will focus our attentions on things that are more present and come to mind faster
Confirmation Bias
A bias that that leads people to seek out information that confirms their existing belief and ignore information that will challenge it
Tversky and Kahneman
We base judgements/decisions on heuristics. Tested through an experiment which gave background info on a person (linda) and then asked participates to rate the likelihood of certain occurances.
When is confirmation bais strongest
Emotional issues
Heuristics
Rules of thumb about the world - Mental shortcuts that our brain uses in complex situations to arrive at a solution quickly
Two types of heuristics
Representativeness heuristic and the availability heuristics
Representativeness Heuristics
Judgeing something on how well it matches the prototype or sterotype
Availability Heuristics
Judging something based on how easily examples come to mind (salience bias)
Schemas
mental knowledge structures
Scripts
Common action routines
Important purpose of Heuristics
logical thought costs time and mental resources therefore automatic processes are the best way to approach the world
Dan Kahneman fast processes
Automatic, rapid, draws on concepts, routines and rules of thumb acquired through practice
Cost to Fast processes
Gaining expertise in a process for it to be a fast process comes with a cost of time and effort
What does conscious thought involve
requires effort, filtering out distractions, and is resource intensive
Iceberg concept
We have mental processes that reach your awareness but there is so much more cognitive processes beneath your awareness
Modes of thinking
Open ended (reflection)
Goal directed
What is the default mode network used for
- mind wandering
- integrating past and present
- imagination, creative thinking
- episodic future thinking (creating scenarios for future thinking)
Goal directed thinking
- must maintain information and work on it in some way
- requires mental effort, concentration
- engage a wide network of brain structures
What brain network does open ended thinking use
The default mode network
What brain network does goal directed thinking use
Executive control network
Hot Cognition
The mental processes involved in making judgements and decisions in situations involving strong emotion
Hot Cognition examples
- making choices based on preferences
- repsonding appropriatly to socially sensitive situations
- understanding how other people may feel in a situation
What happened to michael
Damaged frontal lobe in combat
He still is very intelligent but has poor judgment when emotions are involved
Damasio’s Somantic Marker Hypothesis
This brain region binds memories together with their emotional associations, we use these associations to guide our decisions
Cold cognition
decision making processes driven by reason and logic with minial emotional influence
Darley and Gross (1983) confirmation bias experiment
Experiment: Showed participants videos of oral tests and told group 1 the girl was from “middle class” and group 2 the girl was from “poor background”
Findings: Middle class group reported more examples of good answers while poor group reported more examples of bad answers
Conclusion: People look for confirmation based on preconceptions formed during the framing of a question
Real Life example of representativeness heuristic
Prototype of typical heart disease patient = 50 year old, man, overwight
Therefore women, who do not match this prototype have a lower classification rates for their heart attacks
Dan Kahneman slow processes
Effortful, slow, needed in unfamiliar situations, crucial in precision & creativity
Cost to expertise
Heuristics are rapid, the may confer overconfidence
Berner & Graber (2008)
Doctors were given case descriptions and some led to high disagreement amongst expert doctors. However, each individual doctor was confident they were correct.
= Development of rich and rapid automatic strategies (heuristics) for classification can have a dark side of overconfidence
Definition of thinking
The conscious experience of generating mental representations and operating on them in some way.
How to measure conscious thought?
fMRI measuring brain activity, when people are at rest in an fMRI scanner, a network of structures “talk” to each other and these structures are interconnected
Can you do both open ended and goal directed thinking at the same time
No, you shift between the two and for many tasks we need to switch between states
Hot cognition card gambling example
Players must choose between risky and safe decks. Skin Conductance Response (SCR) measures sweat rates, indicating emotional responses and sympathetic nervous system activation.
Healthy people show SCR when approaching high-risk decks and learn to avoid them. Emotional responses (like a “bad feeling”) guide them towards safer choices.
People with frontal damage (orbital region) don’t show this response and perform poorly in the task.
How does Damasio’s Somatic Marker Hypothesis guide our decisions
When faced with a decision, we recall emotions from previous similar actions/situations, bad associations deter us from that action, good associations encourage us
Hot cognition and social inference making
Patients with frontal damage can fail the faux pas task and find it difficult to identify and justify social blunders
What is learning
An experiential process resulting in a relatively permanent behavioural change that cannot be explained by temporary states, maturation, or innate tendency’s.
Learning requires a CHANGE in behaviour. This could be ….
- Development of new behaviours
- Modification of old behaviours (re-learn and adapt)
- A reduction in behaviour.
Why are genetically predetermined behaviours, and changes brought about by maturation not examples of learning
Learning is the result of experience - Therefore, many instances of behavioural change ARE NOT examples of learning, rather biological maturation or reflexes
3 features of the area of behavioural psychology research
- Emphasis on effect of environmental events on behaviour
- Typical subjects are individuals (as easier to detect subtleties in individuals) and many studies employ non-human animals as subjects
- An emphasis on external/observable phenomena (i.e. the only way we can infer that learning has occurred is by actually seeing an observable behaviour change)
Ivan Pavlov initial experiment
Noticed that if a dog was presented with food bowl, with no food in it, it would salivate (associated stimulus can elicit reflexive response)
Tested this theory - Took a neutral stimulus (tone) and paired it with meat powder - When tone was presented in isolation, it elicited the same response as the meat powder
Classical conditioning
A learning process in which a neutral stimulus becomes associated with a reflex-eliciting unconditioned stimulus, such that it can elicit a conditioned response when presented alone.
what is an UCS
unconditioned stimulus - the stimulus that elicits the response naturally (food for dogs salivating, loud noise for albert crying)
what is a CS
a Conditioned Stimulus that is associated with the CR such that it elicits a response
what is a CR
Conditioned response - the response elicited by a previously neutral stimulus that is now a CS
Pro and con of classical codnitioning
Pro
- Learn to avoid dangerous events
Con
- lead to the development of phobias
Aquisition
Increased no. of trials = stronger response. Although conditioning can be established in a single trial, typically a number of pairings of a CS with a UCS are required before a CR emerges as a response to the CS alone.
Variables that increase the degree of classical conditioning (using albert as example)
UCS more intense
(e.g. very loud noise)
Short delay between UCS & CS
(e.g. 1s between rat & noise)
UCS reliably follows CS
(e.g loud noise ONLY ever occurs in the presence of a rat
Variables that lower the degree of classical conditioning (using albert as example)
UCS less intense
(quiet noise)
Long delay between UCS & CS or UCS occurs before CS
UCS only sometimes follows CS (e.g. loud noise sometimes occurs in the absence of rat
Generalisation
allows learning to carry over to new situations/stimuli without requiring further learning