psychfinal

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1
Feature Detectors
Nerve cells (simple and complex) in the visual cortex that respond to specific features. 4 of these are MALE (Movements, Angles, Lines, Edges)
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Parallel Processing
Essentially, the same as parallel processing of information but instead, it's related to neural stimuli.
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Depth perception
ability to see objects in three dimensions although images that strike the retina are two-dimensional
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Binocular cues
Cues of depth that depend on both eyes.
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Monocular cues
Cues of depth available to each eye separately.
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Perceptual Constancy
How we perceive objects as unchanging (having consistent shape, size, lightness and color) even as illumination and retinal images change.
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Iris
Colored muscle disk with a hole in the center. This is the part that determines the color of your eyes, and changes shape to let in more or less light as required
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Pupil
Hole in the iris
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Lens
Like the lens in a camera, it focuses light rays coming in onto the retina. Expands and contracts to focus on certain objects
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Bipolar cells
Interneurons found in the retina, help relay stimuli from photoreceptors to ganglion cells
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Ganglion cells
Neurons with axons that twine together to form the optic nerve
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Trichromatic theory of vision
In the retina, there are three types of cones (3 types, 1 type sensitive to each of the colors red, green, and blue) respond in varying degrees to different color stimuli.
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Opponent Process theory of vision
Colour is controlled by opponent systems: blue-yellow, red-green, white-black. E.g., some cells are stimulated by green and inhibited by red.
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Retina
Thin surface on the inner part of the eye, contains photoreceptors (rods and cones) and transducts light hitting them into nervous impulses
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Transduction
Converting neural stimuli into neural impulses
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Fovea
Center of the retina, Cone Container, and by extension contains the most amount of photoreceptors, missing this is going to be a problem.
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Cornea
A sort of proto-lens, this clear outer layer is transparent and serves to focus light into the pupil
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Optic disk
The eye's 'blind spot', there are no photoreceptors here. This is where the optic nerve is attached and subsequently relays information to the brain. The brain fills the resulting void in vision in subconciously
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Sensory Adaptation
Lowered sensitivity as a consequence of constant stimulation.
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Sensation
The immediate responses of sensory receptors (e.g., eyes) to basic stimuli (e.g., light).
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Perception
The process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events.
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Figure and Ground
Concept of perceptual organization that states that the first step of perceiving something is to separate an object from it's background
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Grouping
Concept of perceptual organization that state sthat the next step in perceiving something is to organize an object into a form that is meaningful.
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What is the McGurk Effect
Seing one thing (the mouth movement for “ga”) while hearing another (the sound “ba”) can result in the perception of a new sound “da”.
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John B. Watson
The asshole who ran the Little Albert experiment, his work showed that emotions and behaviors, though biologically influenced, are mainly conditioned responses. Little Albert also showed how specific fears might be conditioned.
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Edward Thorndike
This guy outlined the law of effect, which essentially states that behaviors followed by favorable consequences become more likely, and behaviors followed by unfavorable consequences become less likely.
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The violence-viewing effect
Desensitization to violence can occur after viewing violence repeatedly
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Bottom-up processing
Stimuli analysis begins with the sense receptors and works up to the level of the brain
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Signal Detection Theory
Predicts how and when we will detect a faint stimulus amid background noise. Both intensity and psychological factors can affect our threshold.
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Absolute Threshold
Minimum amount of stimulation required to detect a stimulus 50% of the time
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Difference Threshold
Also referred to as Just Noticeable Difference, or JND. Is the minimum difference a person can detect between any two stimuli 50% of time.
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Weber's Law
Weber’s law: To perceive a difference, two stimuli must differ by a constant minimum percentage (not constant amount).
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Subliminal stimuli
Messages presented below the level of conscious awareness.
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Embedded images
A type of subliminal persuasion that is essentially pictures or words that are hidden or flashed quickly.
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Sub-audible messages
Another type of subliminal persuasion, these are essentially sounds or words that are too faint to be heard.
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What do the methods of subliminal persuasion covered have in common?
They're complete and utter horseshit, reliant on the placebo effect.
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Subliminal priming
In this context, it's like priming from chapter 3, except with relationship to physical urges. As Strahan, Spencer, & Zanna demonstrated, in LABRATORY (i.e, controlled) CONDITIONS, subliminal priming works with an existing need or drive.
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Perceptual set
Mental tendencies and assumptions that affect (top-down) what we hear, taste, feel, and see.
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Context Effects on perception
A given stimulus may trigger different perceptions because of the immediate context.
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Light
The part of the electromagnetic spectrum that the human eye is capable of responding to.
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Rods
A type of photoreceptor, sensitive to dim light. Located outside the fovea, and responsible for monochrome vision.
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Cones
A type of photoreceptor sensitive to bright light. Located within the fovea and responsible for color vision.
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Processs of converting light into neural impulses
Transduction
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Wavelength
Distance from one peak to another
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Frequency
Distance from one peak of a wave to another
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Amplitude
Distance from the highest point of a wave to the lowest point (peak to trough). Refers to volume in sound and brightness in light
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Sound waves
Compressed and expanding air molecules.
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Range of human hearing
20-20 000 hz
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Frequency theory of hearing
The rate (frequency) of nerve impulses traveling up the auditory nerve matches the frequency of a tone, thus enabling its pitch to be sensed; explains low pitches (firing frequency of neurons cannot exceed 1000 times per sec)
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Place theory of hearing
Links the pitch heard with the place where the cochlea’s membrane is stimulated; explains high pitches (near the base of the cochlea).
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Composition of the sense of touch
4 separate senses (P2CH: Pain, Pressure, Cold, Heat)
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The gate-control theory of pain
The spinal cord contains neurological gates that either block pain or allow it to be sensed.
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What is taste?
When molecules of a substance dissolved in our saliva binds to specific taste receptors that are located on taste buds.
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Taste receptors on the tongue and what they denote
If something tastes sweet: Energy Source
If something tastes salty: Sodium essential to physiological processes
If something tastes sour: Potentially toxic acid (eg. Lemon)
If something tastes bitter: Potential poisons
Umami (If something tastes meaty):Proteins to grow and repair tissues
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Why does smell bring up powerful memories?
Olfactory bulbs (analyzing smells) is part of the limbic system, which consists of amygdala (emotional processing) and the hippocampus (memory).
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Smell as a sense
Molecules in the air interact with receptors in the nose
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Embodied Cognition
The effect of body experiences on J FAT (Judgements, Feelings, Attitudes, Thoughts)
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What is learning and how do we learn?
Learning is a relatively permanent change in behavior due to experience. We learn by making associations (conditioning).
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Classical conditioning
Linking two events that occur close together. Instinctive.
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Operant conditioning
Associating a response (our behavior) and its consequences. Voluntary.
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Classical Conditioning Terminology
• Unconditioned stimulus (US): a stimulus that unconditionally—naturally and automatically— triggers an unconditioned response.
• Unconditioned response (UR): naturally occurring response (salivation) to the unconditioned stimulus (meat).
• Conditioned stimulus (CS): an originally irrelevant neutral stimulus (tone) that, after association with an unconditioned stimulus (meat), comes to trigger a conditioned response (salivation to tone).
• Conditioned response (CR): a learned response (salivation to tone) to a previously neutral (but now conditioned) stimulus (tone).
• Neutral Stimulus (NS): A stimulus that has no relevancy to the subject
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Acquisition
The initial learning stage in classical conditioning in which an association between a neutral stimulus and an unconditioned stimulus takes place.
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Higher-order conditioning
A procedure in which the conditioned stimulus is paired with a new neutral stimulus, creating a second conditioned stimulus (CS2).
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Process of classical conditioning
1: Determine Unconditional Stimulus & Response (ex. food & salivation). 2: Determine Neutral Stimulus (ex. B E L L). 3: Pair the Neutral Stimulus with the Unconditional Stimulus (ring bell as food is delivered). 4: If all goes well, the Neutral Stimulus should now induce the Conditioned Response and has become the Conditioned Stimulus. 5 (Optional): Pair the Conditioned Stimulus with another Neutral Stimulus to turn the latter into another instance of the former.
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Extinction
Diminishing of a conditioned response when an unconditioned stimulus (US) does not follow a conditioned stimulus (CS).
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Spontaneous recovery
Reappearance, after a pause, of an extinguished conditioned response.
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Spontaneous recovery
Reappearance, after a pause, of an extinguished conditioned response.
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Generalization
The tendency to have conditioned responses triggered by related stimuli.
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Discrimination
The learned ability to only respond to a specific stimuli, preventing generalization.
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Operant Conditioning
Occurs when organisms associate actions with consequences. Notably, occurs of the organism's volition
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Counterconditioning
AKA systematic desensitization. A behavioral treatment that uses relaxation training and a fear hierarchy to help people with phobias react calmly to anxiety-inducing stimulus.
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Reinforcers
Events that strengthen a response
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Positive reinforcement
Adding a desirable stimulus
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Negative reinforcement
Removing an aversive stimulus
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Primary reinforcement
Innately reinforcing or satisfies a biological need
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Secondary (conditioned) reinforcement
Gaining reinforcing power through its association with a primary reinforcer. Ex, AK = 1 taps, 1 taps = dopamine
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Reinforcement schedules
Patterns that define how often desired responses will be reinforced.
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Continuous reinforcement
Involves reinforcing a response every time it occurs
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Partial (intermittent) reinforcement
Involves reinforcing a response only part of the time
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Ratio Schedules
Reinforcing after a number of responses
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Interval Schedules
Reinforcement arrives after a period of time
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Punishment
Any event that weakens the behavior it follows
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Preparedness
Biological constraints predispose organisms to learn associations that have survival value
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Latent learning
Learning that occurs but is not apparent until there is an incentive to demonstrate it.
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Social learning theory (AKA observational learning)
We learn behaviour (e.g., aggression) by observing others and imitating them.
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Modeling
A process in which one person engages in behavior that is mimicked by another person, aka, monke see monke doo
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Vicarious reinforcement
Tendency to strengthen behavior for which others are being rewarded.
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What are Mirror Neurons
When we watch others doing or feeling something, neurons fire in patterns that would fire if we were doing the action or having the feeling ourselves. These neurons are referred to as mirror neurons, and they fire only to reflect the actions or feelings of others.
89
What is a recall task?
Recalling information (AKA remembering)
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The feeling that one knows something but can't figure out what it is
The tip-of-the-tongue phenomenon
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Definition of memory
The persistence of learning over time via encoding, storage and retrieval of information.
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Role of the amygdala in memory formation
Forms memories related to emotions
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Roles of the cerebellum and basal ganglia in memory formation
Form implicit memories
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Roles of the frontal lobe and hippocampus
Form explicit memories
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Three stages of information processing (computer model)
Encoding (placing something into memory)
Storage (retention within short and long-term memory)
Retrieval (withdrawing knowledge from memory)
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What is automatic memory?
Much of the active processing occurs in short-term memory while some information goes straight to long-term memory w/o conscious attention. This memory is automatic memory
97
What is sensory memory?
In Atkinson and Shiffrin's model, sensory memory is the first stage in forming explicit memories, and is an immediate, very brief recording of sensory information in the memory system.
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What is short-term memory?
Activated memory portion that holds a few items briefly (e.g., a phone number while dialing) before the information is stored or forgotten.
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Working memory
Is essentially short-term memory, but now a lot more flexible. It's constantly in motion, processing and linking information, and can be affected by both genes and our environment.
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What is rehearsal in the context of memory?
Working memory's storage time is complete shit. It only lasts for around 15-20 seconds. Rehearsal is essentially the only way to get around working memory’s shitty storage times, and it’s the process of mentally repeating information to keep it in the person’s mind and short-term memory.
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What is effortful processing and encoding?
It's essentially studying.
102
The spacing effect
Spacing studying out makes it more effective
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Levels of processing:
Shallow processing: Structural. Example: Emphasize the physical structure of a word.
Intermediate processing: Phonemic. Example: Emphasize what words sound like
Deep Processing: SSR (Semantic, Self-Referential). Semantic example: Emphasize the meaning of the verbal input. Alternatively, Self-Referential: Emphasize relevance or usefulness to oneself.
104
What is the self-reference effect?
We remember best when we relate the material to ourselves.
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Implicit Memory System
Handles storage of memories that are generally considered to be more instinctive, i.e, created by classical conditioning.
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Explicit Memory System
This stores both semantic (fact-related & general knowledge) and episodic (experienced events) memories.
107
Flashbulb memories
Emotional arousal tends to produce stress hormones, which awaken the amygdala, which uses its stand to stimulate the memory formation area of the brain. This is why certain emotionally charged events tend to hang around for a long time.
108
What is the serial position effect?
The tendency to remember the first (primacy) and last (recency) items on a list.
109
What is the von Restorff effect?
The tendency to remember unique items in a list. Ex: (Long, Short, Cat, Arches, Dildo)
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Why do we forget things?
• Sometimes when you meet someone you are so focused on looking cool, you don’t even hear their name. -> Encoding Failure
• Sometimes we remember something initially, but we forget the next day – the memory trace ‘faded’. -> Storage Decay
• Sometimes we think we know something, yet can’t remember, and it magically pops into our mind later on. ->Retrieval Failure
• Sometimes we can’t remember our new password because all we can think of is the old one, or we can’t remember the old one because we just remember the new one. ->Interference (proactive and retroactive respectively)
• Sometimes we attempt to forget things (works for neutral, but not emotional information) ->Motivated Forgetting
111
What is echoic memory?
Ultra-short-term memory for things you hear.
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What is iconic memory?
Ultra-short-term memory for things you see.
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What is the misinformation effect?
The misinformation effect occurs when a memory has been corrupted by misleading information.
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What is source amnesia?
Also known as source misattribution, it involves faulty memory for how, when, or where information was learned or imagined.
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What is the imagination effect?
The imagination effect occurs when repeatedly imagining fake events can create false memories.
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What is memory retrieval?
Memory retrieval is retrieving memories held in storage via vast webs of associations. Retrieval cues are anchor points within the web that help retrieve information. (Remembering via mind map)
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What is the encoding specificity principle?
The encoding specificity principle suggests that retrieval will be best if the context at retrieval matches the context at encoding.
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What is mood-congruent memory?
The tendency to recall experiences that are consistent with one’s current good or bad mood.
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What is state-dependent memory?
The tendency to recall events consistent with one's current physical or mental state.
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Atkinson and Shiffrin model of memory
The Atkinson and Shiffrin model proposed that memory consisted of three stores: a sensory register (sensory memory), short-term memory (STM) and long-term memory (LTM).
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