PSU Psychology 100 Exam 2 (Crosby)
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Absolute Threshold | Least Energy for correct stimulus to detect 50% of the Time.
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Just Noticeable Difference | Smallest difference between two thing can be detected 50% of the time
-difference in two weight
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Top-down Processing | experience/expectations
-listening to your favorite song bc you know how you'll feel
-past experiences
-Perception
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Bottom-up Processing | Making new sense of new material
-hearing a new song for the first time
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Perception | Method which by sensations are interpreted and organized
-two types: Top-Down and Bottom-Up
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Sensation | Activation of receptors in various sense organs- allowing outside stimuli to become neural signals in the brain
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Habituation Adaptation | tendency for brain to stop realizing constant unchanging stimuli
-Ex; fans, clock ticking, sounds that will fade
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Sensory Adaptation | sensory receptors less responsive to constant stimuli
-Ex;being cold in a pool goes away after a little while
-getting used to smell of cigarette smoke after being in room
-touch/taste/smell
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Order That Light Travels in Eye | Cornea
Iris
Pupil
Lens
Retina
(CIP LR)
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Cornea | 1st stop of light
focus's on light coming in
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Iris | muscle that controls size of pupil
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Pupil | When light enters interior of the eye
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Lens | helps to focus light to the retina
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Visual Accommodation | When the lens change shape to focus in on something
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Retina | -Contains photo receptor cells
-light gets covered to electrical impulses
-3 Layers
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3 Layers of the Retina | 1) Light passes through ganglion and bipolar cells
2)reaches and stimulates rods and cones
3)Nerve impulses from rods and cones travel alone a nerve pathway to the brain
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How does light become a Impulse | Light
Sensory Impulse
Visual Cortex in occipital lobe
then decisions are made
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Dark Adaption | recovery of the eyes sensitivity to visual stimuli in darkness after exposure to light
(Light to Dark)
-Involved with Rods
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Light Adaptation | recovery of the eyes sensitivity to visual stimuli in light after exposure to darkness
(Dark to Light)
-happens really quickly within a matter of seconds
-Involved with Cones
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After image | visual sensations that persist after initial stimulus has been removed
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Thrichromatic Theory | Three colors- blue green red
firing rates of cones and color
based on how much of each of the colored cones are activated
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Opponent Process Theory | Four colors- yellow blue green red
red&green
blue&yellow
-more accepted today
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Color Blindness | -caused by defective cones in the retina of the eye
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Monochrome Blindness | -can only see black and white
-very rare
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Protanopia | most common
red/green color blindness
lack of functioning red cones
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Tritanopia | blue/yellow blindness
lack of functioning blue cones
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Why do more males suffer from color blindness? | -recessive trait is in X sex chromosome
-females need two but males only need one
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Touch | severe sensation originating in several different parts in the body
** happens in parental lobe ***
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Kinesthetic Sense | -location of body parts in relation to each other
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Vestibular Senses | movement/body position/balance
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Motion Sickness | Same disagreement with what our body feels and what our eyes see
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The Basics of Perception | how we organize and make sense of things
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Perceptual Constancy | Tendency to perceive things a certain way because previous experiences or expectations influence those perceptions
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Gestalt Principles | Figure Ground, proximity, Similarity, Closure, Continuity, Contiguity, Common Area
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Depth Perception | ability to perceive world in 3 dimensions
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Molecular cues | cues for perceiving depth based on one eye
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Binocular Cues | cues for perceiving depth based on two eyes
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Convergence | rotation of eyes to focus on one single subject
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Binocular disparity | eyes don't see same image bc of the distance they are from echother
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Illusions | Perception that does not respond to reality
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Learning | a relatively permament change in behavior or thought due to an experience and practice
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Pavlov's Classical Conditioning | Learning to make involuntary response to a stimulus normal- Pavlov's Dogs
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Basic Principles in Classical Conditioning | -conditioned stimulus must come before unconditioned (Bell Before food)
-has to occur in a timely manner
-must be repeated to be learned
-new conditioned stimulus must be unique
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Stimulus Generation | Tendency to respond with conditioned response to something that is only similar so the stimulus
(Dogs salvating to a similar tone)
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Stimulus Discrimination | Tendency to stop making this generalized response because the similar stimulus is NEVER paired with the real conditioned stimuli
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High-Order Conditioning | occurs when a strong stimulus is paired with a neutral stimulus causing the neutral stimulus to become a second conditioned stimulus
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Conditional Emotional Responses | emotional response that has become classically conditioned by stimuli
-advertisement of things that make you happy so you are happy when u watch it
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Vicarious Conditioning | watching something happen but creating a conditioned response from it even though it isn't happening to you
-Seeing kids crying getting a shot and you start crying before you get your shot
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Conditioned Taste Aversion | development of nausea in response to a specific taste since the taste was one followed by a bad experience
-(Oreo Fudge)
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Biological Preparedness | Tendency of animals to learn certain associates with only one or a few pairings due to the survival value of learning
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Pavlov beleived classical conditioning worked because.. | stimulus substitution
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Rods | Greys, blacks, whites, dim vision
-Dark Adaptation
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Expectancy | When a dog heres a bell..... It expects food..... so dog salivates
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Operant Conditioning | Voluntary behavior learned through consequences
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Thorndikes Law of Effect | response followed by pleasurable consequences are repeated
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BF Skinner | Operant Conditioning
studied observable measurable behavior
learning depends on the consequences
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Reinforcement | ANY consequence that make a response more likely is called reinforcement
-causes INCREASE in behavior
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Positive Reinforcement | ADDing or giving for a good thing
(giving money if you get good grades)
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Negative Reinforcement | Taking away for a good thing
(taking away chores if you get a good grade)
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Partial Reinforcement | reinforcement after some but not all correct responses
-stronger response
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Continuous Reinforcement | constant reinforcement after every good behavior is preformed
-good for learning new responses
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Partial Reinforcement Ratio | how many times you respond
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Partial Reinforcement Interval | how much time in-between responses
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Fixed Ratio Reinforcement | same response--> same reinforcement
for every 5 toys made, 20$ recieved
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Variable Ratio Reinforcement | # of responses until reinforcements varies
participant rapid rate without pauses
(SLOT MACHINES- you don't know when they will pay out)
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Fixed Interval | Always same time before reinforcement opportunity
-long pauses after reinforcement
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Variable Interval | Reinforcement possibilities after varying amounts of time
-slower steady rates w/ out pauses
(Fishing)
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Punishment | Any consequence that make a response less likely to occur
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Positive Punishment | Adding unpleasant stimulus
(Adding Chores, Spanking, Speeding Ticket)
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Negative Punishment | -taking away pleasant stimulus
(Taking away phone, car keys, or things you like)
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Punishment Problems/Drawbacks | -Fear/Anxiety
-Lying
-Avoidance
-Modeling of Aggression
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Shaping | reinforcement of simple steps, leading to a desired, more complex behavior
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Discrimination | understanding why punishment is different in things
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Generalization | Apply things that work in one thing to other things
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Cognitive Learning Theory | early days of learning- focused on behavior
1950's and 1960's- increase mental events
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Tolmans Latent Learning | Learning that is hidden until its application becomes reinforced
-tolmans rats :latent learning
-difference groups with different reinforcement so different outcomes
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Insight Learning | -Kohler
-Sudeen perception of relationship among various parts of the problem allowing solution of problem to come quickly
-worked with chimpanzees
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Learned Helplessness | Tendency to fail to act to escape from a situation because of repeated failures
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Restorative Theory | Make us feel good and better
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Memory Consolidation | figures out what we retain while we sleep
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Dreams | Provide access to the unconscious. Include manifest and latent content.
-Happens during REM sleep
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Manifest Content | The actual content of the dream
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Latent Content | The hidden meaning of the dream
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Narcolepsy | person falls immediately into REM sleep during the day without warning
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Insomnia | Inability to fall asleep, stay asleep, or get good quality sleep
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Nightmares | Bad dreams arousing feelings of horror, helplessness, extreme sorrow, etc. (occurs during REM sleep-Second Half of The Night)
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REM Behavior Disorder | Mechanism that typically blocks the movement of voluntary muscles fails, allowing the person to thrash around and get up and act out nightmares
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Sleep Apnea | Person stops breathing for short periods of sleep
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REM SLEEP | Eyes move under eyelids, increase in body functions, 90% of dreaming, REM paralysis
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REM sleep | Eyes move under eyelids, increase in body functions, 90% of dreaming, REM paralysis
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Stage 1 Rem Sleep | Light sleep, hypnic jerk, hypnagogic images
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Stage 2 Rem Sleep | Temperature, breathing, and heart rate decrease, sleep spindles
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Stage 3 Rem Sleep | Growth hormones released, hard to wake up
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Night Terrors | Attacks of extreme fear that the victim has while sound asleep. (Non-REM- First third of the night)
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Sleep Walking | Occurs during deep sleep (stage 3). Moving around or walking in ones sleep @
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