Cognition & Consciousness Flashcards
Cognition
How our brains react to the information received from the outside world
Which lobe is disproportionately large in humans
Frontal
4 pillars of the Information Processing Model
- Thinking requires sensation, encoding, and storage of stimuli
- Stimuli must be analyzed by the brain to be used in decision making
- Decisions made in one situation can be applied to others (situational modification)
- Problem solving is dependent not only on the person’s cognitive level but also the complexity and the context
Cognitive development
Development of one’s ability to solve problems
Piaget’s stages of cognitive development
- Sensorimotor
- Preoperational
- Concrete operational
- Formal operational
Piaget: infants learn through ____ interactions with the environment?
Instinctual
Schema
Organized patterns of behaviour/concepts/sequences of events
-ex: what is a dog? what happens when someone calls you name? What do you do at a restaurant ?
Adaptation
The process of adding new information to different schemata’s
-either occurs by assimilation or accomodation
Assimilation
Process of classifying new information into an existing schemata
Accomodation
Process in which existing schemata are modified to encompass new information
Sensorimotor stage: time & features
From birth until about 2 years
Child learns to manipulate environment to get needs
2 different types of circular reactions (primary and secondary)
*Key milestone that ends this period: developing object permanence = objects continue to exist when they are out of sight
Primary circular reactions
Repetition of body movements that originally occurred by chance
-ex: thumb sucking
Secondary circular reactions
Repeated actions (manipulation) that is focused on the environment, not the body
- tend to be repeated if a child gets a response
- ex: throwing toys
Representational though
Marked by the development of object permanence
-child begins to create mental representations of external objects and events
Preoperational stage
From ~ age 2-7
Characterized by:
- symbolic thinking= play make believe/imagination
- egocentrism= inability to think how others may feel
- centration= focus only on one aspect of a phenomenon
- unable to understand conservation (has to do with centration)
- ex: cant tell that a piece of cake cut in half is still the same size
Concrete Operational stage
From ~age 7-11
Children can understand conservation and consider the perspectives of others
Can engage in logical thought about concrete objects and ideas
*can’t think abstractly yet
Formal Operational stage
From ~11+
Able to think logically and abstractly about ideas
Reason with abstract concepts and problem solve
*Piaget’s pendulum experiment - only those in FOS could manipulate the equations to see which variables affected length
Lev Vygotsky - ideas of cognitive development
Thought that the force driving cognitive development in kids was their own internalization of their culture
Fluid intelligence
Problem solving skills
- peaks in early adulthood
- declines with age
Crystallized intelligence
Related to the use of learned skills and knowledge
- peaks in middle adulthood
- declines with age
Activities of daily living
Eating, bathing, toileting, dressing, ambulation
-the longer a person is able to retain function in these areas the less likely they are to experience intellectual decline
Dementia
Begins with impaired memory but progresses to impaired judgement and confusion
-personality changes can also occur
2 common causes of dementia
- Alzheimer’s
2. Vascular (multi-infact) dementia caused by high BP and repeated micro clots in the brain
Delirium
Rapid fluctuation in cognitive functional that is reversible and caused by medical causes
- pH or electrolyte imbalances
- malnutrition
- pain
- alcohol withdrawal
- -etc.
Mental set
Tendency to approach similar problems in the same way
Functional fixedness
Inability to consider how an object can be used in a non-traditional manner
Trial and error
Less sophisticated means of problem solving
-try various ways until one works
Algorithms
Formula or procedure for solving a certain type of problem
Deductive reasoning
Top down reasoning
-starts with a general set of rules and draws conclusions from the information given
Inductive reasoning
Bottom up reasoning
- create a theory via generalizations
- starts with a specific instance and then draws a conclusion from it
Heuristics
Simplified principles used to make decisions
-“rules of thumb”
Availability Heuristic
Used to try and decide how likely something is
-make decisions based on how easily similar instances can be imagined
Representativeness Heuristic
Used to categorize items on the basis of wether they fit the representative image of a category
Base rate fallacy
When you use prototypical or stereotypical factors while ignoring actual numerical information
Disconfirmation principle
Evidence obtained from testing proves the solution doesn’t work => therefore solution should be discarded
Confirmation bias
Tendency to focus on information that fits an individual’s beliefs, while rejecting opposing information
Overconfidence
Tendency to erroneously interpret one’s own knowledge and beliefs as infallible
-confirmation bias supports this
Belief perseverance
Inability to reject a particular belief despite clear evidence to the contrary
Intuition
Ability to act on perceptions that may not be supported by evidence
*recognition primed decision model = brain uses past experience to create patterns and apply them to situations without awareness
Emotion
Subjective experience that a person has in a given situation
- often influences how they think and make choices
- also include the emotion the person expects to feel from a particular decision
Gardner’s Theory of Multiple Intelligences - 7 types
- Linguistic
- Logical-mathematical
- Musical
- Visual-spatial
- Bodily-Kinesthetic
- Interpersonal
- Intrapersonal
Intelligence quotient (IQ)
Standardized way of measuring intelligence
-largely pioneered by Alfred Binet
Stanford-Binet IQ test
From Binet’s work and a professor at Harvard
IQ = (Mental age / chronological age) x 100
Consciousness
Level of awareness of both the world and one’s own existence in the world
Alertness
State of consciousness in which we are awake and able to think
- experience physiological arousal
- cortisol levels tend to be higher
Maintained by neurological circuits in the prefrontal cortex
-communicate with the reticular formation in the brainstem keeps the cortex awake and alert
Electroencephalography (EEG)
Records the average of the electrical patterns within different portions of the brain
Beta waves
High frequency and occur when a person is alert or concentrating on a mental task
-neurons are randomly firing