Intro (History, Information Processing View, Brain, Methods) Flashcards
What is cognition?
- The use of the mind
- Collection of domains that support different behaviours: memory, emotion, planning, attention, perception
- Cognitive function, our thoughts and actions, is regulated by brain activity
- Emerges from the connections of over 100 billion nerve cells in the brain
- Primarily concerned with understanding the processes that produce complex behaviours even though separate abilities are studied
- The sum of all such intelligent mental activities is cognition, the acquisition and processing of sensory information about the world in order to make behavioural decisions
What are the types of cognitive research?
- Basic research
- Applied research
What is basic research?
- Goal is to try to understand the world and its phenomena without regard to a specific end-use of this knowledge
- Understand how we perceive information, remember, reason and solve problems
- Understand who we humans are as a species and what makes us tick. Why do we do the things we do and how do we do them
What is applied research?
- Research with the end goal of developing a solution to a problem
- Understanding changes to the mind from diseases and disorders
What type of research is this?
Laboratory experiment on the neural overlap between different types of memory.
Basic
What type of research is this?
Testing the effects of nutritional interventions on cognition in un-housed communities.
Applied
What type of research is this?
Using intact forms of memory to develop tools to improve quality of life for someone with Alzheimer’s disease.
Applied
What type of research is this?
Determining the mechanism driving the link between gut health on brain activity.
Basic
What is hypothesis guided research?
- We have a theory
- From this theory, develop a hypothesis, a certain guess about the link between variables under study
- A hypothesis must be testable against evidence; allows us to use experiments to confirm hypothesis
What is phenomenon-based research?
When an “effect” is discovered, and follow-up research examines the nature of the effect
What is the placebo effect?
Fake treatments lead to improvements in people’s symptoms and functioning
What are the general approaches to study cognition?
- Cognitive psychology
- Neuroscience
- Computational modeling
What is cognitive psychology?
- Study of behaviour to understand the mind (mental processing)
- Studying intelligent behaviour itself
- Concerned with studying intelligence using behavioural experiments
What is neuroscience?
- Study of the brain and linking it to the mind
- What parts of the brain carry out functions we see behaviourally
- The study of the physical brain and related systems
What is computational modeling?
- Building and modelling the mind-brain connection
- Simulating brain processes or functions using computer-based models
- The goal of most research in artificial intelligence is to build machines that can imitate human cognition, not as a means of understanding human cognition itself
What is the cognitive psychology of emotion?
- Emotional enhancement effect: emotional stimuli are more easily attended to, remembered than neutral stimuli
- Behavioural experiments show focal memory enhancements for negative stimuli in an image
- We will have poorer memory for the face of someone pointing a gun than for the face of someone drinking because we can only focus on certain things at a time so we are attention is being pulled by the gun
What is the cognitive neuroscience of emotion?
- Amygdala activity predicts memory for emotional but not neutral images
- More activity means a better memory
What is the computational modelling of emotion?
- If we see computations lead to the same effect then it could help us get a stronger understanding of how emotion is processed in the brain and how it effects our behaviour
- AI (like an algorithm trained on human data to predict how we use language) is effective at mimicking human behaviour but it is not sentient
- It is a good predictive model
What type of would fit with the saying “If we really understand how something works, we should be able to build it”?
A. Neuroscience
B. Cognitive psychology
C. Computer modelling/AI
D. Applied research
C. Computer modelling/AI
What is the most sophisticated computing device in the (known) universe?
A. The human brain
B. The Google car
C. The calculator
D. Deep Blue (chess-playing computer)
A. The human brain
Which of these would not be considered part of cognition?
A. Memory
B. Language
C. Digestion
D. Perception
C. Digestion
Historically, artificial intelligence has been least successful at tasks that require what kind of capability?
A. Fast performance
B. Many calculations
C. Large memory
D. Flexible thinking
D. Flexible thinking
What is the primary driver of recent dramatic progress in artificial intelligence?
A. Much larger computer memory stores
B. Computer programs that can learn rather than being programmed
C. Better computer programmers
D. Much faster computers
B. Computer programs that can learn rather than being programmed
Is this an example of basic or applied research: A study that examines which of two teaching methods improves memory for content in University students studying cognition?
Applied
An experimenter wants to understand how perception is linked to memory, what approach should they use to reach this understanding?
A. Cognitive psychology
B. Neuroscience
C. Computer modelling
D. All of the above
D. All of the above
Which of the following does not describe cognition?
A. Remembering learned information
B. Orienting attention to a stimulus
C. Reflexes
D. Understanding speech
C. Reflexes
Studying the brain and cognitions with the primary goal of developing theories without any regard to how his knowledge can be used to address a problem is known as
Basic research
The research approach that studies intelligence by observing behaviours is known as:
A. Cognitive psychology
B. Behavioural neuroscience
C. Behavioural psychology
D. Artificial intelligence
A. Cognitive psychology
You were recently hired to use your knowledge of scientific findings in the field of psychology to help design and develop a new phone app. Which of the following best described your field of work:
A. Machine learning
B. Basic research
C. Computational modeling
D. Human factors
D. Human factors
Which is the following is a method that can be used to study cognition?
A. Measuring neural activity as a participant is engaged in an experiment
B. Stimulating specific brain regions to observe effects on behaviours
C. Observing behaviours of individuals with brain damage
D. Using computers to stimulate the brain as a participant is engaged in an experiment
E. All of the above can be used to study cognition
E. All of the above can be used to study cognition
You are interested in the link between laptop usage and class participation. One day, you decide to count the number of times students participated in class and compare average participation rates between those who were using a laptop and those who were not. This is an example of
Naturalistic observation
Among the multiple fields that study cognition, _______________ is the field of research that examines the brain and the physiological processes that underly mental processes.
A. Cognitive psychology
B. Neuroscience
C. Computational modeling
B. Neuroscience
True or false? To date, we do not fully understand how the brain produces cognition.
True
What are the philosophical foundations of cognitive psychology?
- Ancient Greek philosophers considered the locus of the mind (sensation, memory) and basis of human personality
- Many took an analytical approach to understanding the human mind by breaking it down into parts to study
- Aristotle and Plato were two key figures who studied human knowledge
Who is Plato?
- First early philosopher to consider the human mind
- Rationalism
- Since internal thoughts and external observations interact, the world is a reflection of our reality
- Observation does not always lead to certainty
- There is an innate aspect to mental processes and reasoning
- “A good decision is based on knowledge and not just on numbers”
What is rationalism?
- Knowledge is the result of observation and prior reasoning
Who is Aristotle?
- Combined philosophical and scientific approaches to thinking
- Empiricism
- The basis of thought is forming associations based on observations
- The mind is nothing before forming associations
- Foundation of many cognitive theories that emphasize associations
- “The only true wisdom is knowing you know nothing”
What is empiricism?
- All knowledge comes from experience
- We know nothing before observation
What’s the link between studying philosophy and cognition?
- Studying Philosophy: asking questions about how and why we think
- Studying Cognition: gathering evidence to support the answers
- Philosophy from both Western and Eastern Countries are linked to Cognition
- Indian Buddhism : rejects the notion of a permanent self and suggests to study cognitive processes during an experience
What is structuralism?
- Identifying the basic building blocks of the complex thoughts or the conscious experience
- Emphasized systematic, controlled observation for understanding the structure of the mind
- Systematic observation of the elements of the mind
- Understanding these elements will help understand more complex cognitive processes, like perception, memory, and learning
- Introspection is self report
- People report their thoughts or observations
Which study uses self report to collect data?
a. a study examining pupil dilation in people when exposed to stress
b. a study collecting ratings of pleasure when people view food images
c. a study collecting response time to words presented on a screen
d. a study collecting brain imaging data
b
Who is Wilhelm Wundt?
- Founded the first formal laboratory for psychological research and practiced structuralism
- Goal: identify the simplest units of the mind that he thought followed certain laws to create complex thoughts
- Wanted to establish a mental periodic table of elements
- Asked what is the mind made of using introspection
What is Wundt’s empirical introspection?
- Experimental self report or observation about conscious experience
- Mental chronometry: estimating time for a participant to perceive something
What are the criticisms of structuralism?
- Simplistic approaches (focusing on simple sensory processes)
- Introspection considered too subjective
What were the theories in the early days of experimental psychology?
- Structuralism
- Functionalism
What is functionalism?
- Asks why the mind works
- Not interested in breaking down mental states to basic elements
- Cognition is about serving a function and so must adapt to current goals
- focuses on the usefulness of knowledge
- contributed an emphasis on the adaptive functions of our mind
- how we use cognitive processes based on setting
- context matters
- William James
Who is William James?
- Pragmatic
- Opposed searching for basic mental elements
- focused on practical approaches to problems
- believed that consciousness is personal
- it cannot be broken down into parts as it is constantly changing
- emphasized an eclectic methodological approach
- needed to study the usefulness and variability of accessing knowledge in the real world
What is a criticism of functionalism?
- difficult to study some of these ideas (consciousness, imagery) especially if cognition is always changing
What is behaviourism?
- shift from studying the mind to behaviour
- focused on what can be observed (input, output)
- did not consider mental processes
- focused on animal research
- assumed all species obey the same laws of behaviour
What are some theories of behaviourism?
- classical conditioning
- instrumental learning and operant conditioning
What is classical conditioning?
- Pavlov
- learning by making associations between cue, a stimuli and the natural response
What is instrumental learning and operant conditioning?
- Thorndike and Skinner
- Behaviour is contingent on a schedule of reinforcements, rewards and punishments
- rewards encourages behaviours
- punishment reduces behaviours
How is behaviourism limited?
a. it only focuses on internal processes
b. it is too complex as it accounts for internal and external responses
c. it is impossible to scientifically study behaviour
d. it does not account for internal processes and flexibility
d
What are the problems with behaviourism?
- overestimated the scope of their explanations
- cannot account for complex human behaviour
- the assumption that learning is the same for all individuals and across species is false
- latent learning: learning in the absence of conditioning
What is an example of latent learning?
- Children learn to apply language rules to new situations
- pluralize objects by adding an s even if they have never heard or seen the word
- we need to refer to mental processes to explain this behaviour
What is the cognitive revolution?
- 1950s
- accepted that there are internal mental states
- accepted the scientific method to study these states, like behaviourism and other fields
- driven by technology
- the computer is the mascot for this movement
- led to the view of the mind as a processor of information
What is the information processing view?
- the mind and the brain is like a computer
- information processing in humans resembles that in computers
- information from environment is processed by a series of processing systems
- these processing systems change information in systematic ways
- cognitive research aims to understand the processes and structures that underlie cognitive tasks (attention, memory, etc)
What is the box and arrow flowchart?
- stimulus
- primary memory
- rehearsal or forgotten
- secondary memory
- how information flows through memory
- illustrates that processing occurs in stages
- Waugh and Norman’s model of memory
What are the limits to information processing?
- the number of words remembered decreases as the distractor task increases in length
- you cannot rehearse information and in that time, information is not processed
- limit of the system
Why do we process information?
- we process information to reduce uncertainty
- the more uncertain something is, the longer it will take it to process
- the amount of information processed is inversely related to how much we expect that information to occur
- if we don’t know what to expect, we must process more
What is the link between information processing and uncertainty?
- Humans are stressed out by uncertainty
- Uncertainty of getting a shock was associated with more stress than certain shock
- Greater stress response when shock delivered 50% than 100% of the time due to uncertainty
Which ___ word requires more processing?
a. the zebra has black and white ___
b. the zebra ran through the ____
b
What was William Hick’s experiment on information prcessing?
- 1952
- research question: what is the relationship between choice reaction time, a proxy for processing, and the amount of information within an event?
- conducted a behavioural experiment measuring reaction time to detect light
- participants saw a display of 10 lamps
- a lamp lit up every few seconds
- participants were asked to press a button when a lamp lit up
- some trials: one of the ten lamps would light up (high certainty)
- some trials: any of the ten lamps could light up (low certainty)
- people were slower (higher reaction time) to detect a light if any lamp could light up than when only one could
- reaction time to press the button increased with the number of possibilities
What is Hick’s Law?
- the more information to process, the longer it takes to make a response to that information
What are the information processing limits?
- choice overload bias
- decision fatigue
What is choice overload bias?
- the greater the number of choices (or uncertainty of choice) taxes information processes
- reduced satisfaction, lower confidence and more regret
What is decision fatigue?
- we have a limited amount of cognitive processing
- making decisions uses cognitive processing
- thus, decisions become harder to make - and worse - throughout the day, as we fatigue our system
- to reduce decision fatigue: make big decisions in the morning, develop daily routines
What is ecological validity?
- the extent to which the findings of a research study can be generalized to real life naturalistic settings
Which school of thought or thinker is most responsible for promoting the use of controlled experiments for cognition research?
a. functionalism
b. structuralism
c. behaviourism
d. Plato
e. all of the above
c
What are the assumptions of cognitive research?
- Mental processes exist
- Mental processes can be studied scientifically
- We are active information processors
- we are agents that manipulate information to produce behaviours
- we do not only passively respond to information (behaviourism) - The basis of mental processes is the brain
What is the mind-body problem?
- how are mental events related to the body (brain)?
- dualism
monism
What is dualism?
- the mind and brain are separate entities that are equally important
- both the mind and body exist separately
- interactionism
- epiphenomenalism
What is interactionism?
- a form of dualism
- the mind and brain interact to induce events in each other
- mind can affect body (thinking alters brain activity)
- body can affect mind (hormones affect cognition)
- subscribes to the idea we have a soul
- Rene Descartes (early 1600s)
- the pineal gland is this “principal seat of the soul”
- where the interaction between entities occurs
What is epiphenomenalism?
- mental thoughts (mind) are cause by physical events (brain), but thoughts do not affect physical events
- one way interaction
- mental events are like steam coming off a train (Thomas Huxley)
- the steam (mind) does not affect how the train (brain) works, even if it is a separate entity
What is monism?
- the mind and brain are the same, only one entity exists
- there is one basic entity that presents as both mental and physical responses
- idealism
- neutral monism
- materialism
What is idealism?
- all reality is a mental construct, physical and mental
- without having mental processes, there’s no physical representation
- only the mind exists
What is neutral monism?
- the underlying nature is not mental or physical but something else, something neutral
- the mind and body are the same thing
What is materialism?
- all reality is the result of physical processes
- only physical matter exists, all perceptions and thoughts are the result of physical processes
- physicalism?
- only the body exists
Only physical processes in the world determine what we do. Which theory best fits with this statement?
a. dualism
b. idealism
c. interactionism
d. materialism
d
What are the terms for the directions of the brain?
- dorsal
- caudal/posterior
- rostral/frontal/anterior
- ventral
What is the dorsal direction of the brain?
Top of the brain