Environment Interaction Flashcards
Organisms Interact with Environment
1) Take in information (sensation) and deciding deciding what information is important while filtering out the rest (attention)
2) Making complex decisions about that information (cognition), sometimes in a split second
3) Reacting (behavior)
Selective Attention
Process by which one input is attended to and the rest are tuned out
Necessary due to limited attention capacity
Dichotic Listening Setup
Person listens to info in one ear (attended channel) and ignore input to the other ear (unattended channel)
People remember some of attended channel but almost nothing from unattended
Broadbent Filter Model of Selective Attention
Donald Broadbent
Model states: Inputs from environment first enter a sensory buffer. One input is selected and filtered based on physical characterstics of input. This prevents sensory overload
Other sensory info stays in buffer briefly, but quickly decays
At this point info is still raw data and hasn’t been transformed.
Next info enters short term memory and is processed for working memory
Model doesn’t account for cocktail party effect
Cocktail Party Effect
Occurs when we immediately detect words of importance originating from unattended stimuli
Anne Treisman’s Attentuation Model
Accounts for cocktail effect
Mind has an attenuator which ‘turns down’ the unattended sensory input rather than eliminating it
Selective Priming
Suggests people can be selectively primed to observe something either by frequent encounter or expectation
Divided Attention
Occurs when and if we are able to perform multiple tasks simultaneously
Depends on characteristics of activities one is trying to multitask
Resource Model of Attention
We have a limited pool of resources on which to draw when performing tasks
In general, if resources required to perform multiple tasks simultaneously excedd the available resources then the tasks cannot be accomplished at the same time
Factors: Task similarity, task difficulty, task practice
Information-Processing Models
Assume information is taken in from environment and processed through steps including attention, perception, and storage into memory
As it goes, info is transformed
Alan Baddeley’s Model
Working Memory consists of:
1) Phonological loop - allows us to repeat verbal info to help remember
2) Visuospatial Sketchpad - allows us to use mental images to help remember
3) Episodic Buffer - Info in working memory can interact w/ info in long term memory
4) Central Executive - Overseer of entire process. Orchestrates by shifting and dividing attention
Piaget’s Schema’s
Believed we either assimilate experiences by conforming them into our existing schemas
or Accommodate them by adjusting our schema’s to take into account new experiences
Piaget’s Stages of Cognitive Development
1) Sensorimotor Stage (0-2): Infants experience world through senses/movement; object permanence marks transition
2) Preoperational Stage (2-7): Children learn that symbols represent things, but lack logical reasoning; children are egocentric
3) Concrete Operational Stage (7-12): Children think logically about concrete events, learn math concepts, obtain principle of conservation
4) Formal Operational Stage (12-adult): Ability to think about abstract concepts, gain logical thought, deductive reasoning, systemic planning
Trial and Error
Employ repeated varied attempts until a problem is solved
Algorithm
Employ a step-by-step procedure to solve a problem
Heuristics
Employ mental shortcuts to solve a problem
Insight
Experience sudden flash of inspiration to help us solve a problem
Fixation
Unable to see a problem from a fresh perspective
Mental Set
Fixate on solutions that worked on the past though they might not apply to the current problem
Functional Fixedness
Tendency to perceive the functions of objects as fixed and unchanging
Belief Bias
Tendency to judge arguments based on what we believe about their conclusions rather than on whether they use sound logic
Confirmation Bias
Tend to only seek info that confirms what we believe, ignore info that refutes our belief
Belief Perseverence
Tendency to cling to beliefs depsite the presence of contrary evidence
Overconfidence
We overestimate the accuracy of our knowledge and judgements
Consciousness
Awareness that we have of our internal states, the environment, and ourselves
Alertness and Arousal
Ability to remain attentive to what is going on; controlled by the reticular formation (in brainstem)
Stages of Sleep
Stage 1: EEG- Theta waves (low to moderate intensity and intermediate frequency); EMG- moderate activity; EOG- slow rolling eye movements
Stage 2: EEG-Theta waves interspersed w/ K-complexes and sleep spindles; EMG- moderate actvity; EOG- no eye movement
Stage 3: EEG- Slow wave sleep, delta waves (high amplitude, low frequency); EMG- moderate activity; EOG- no eye movement
REM: EEG- Beta waves, most similar to wakefulness, dreaming occurs here; EMG- no activity; EOG- quick bursts of eye movement
REM Stage
Dreaming occurs in this stage
Missing REM sleep causes REM rebound the next night
Freud on Dreams
Manifest content- plotline of dream
Latent content- includes all our unconscious drives and wishes
He believed dreams were a way to understand inner conflicts and desires
Dyssomnias
Abnormalities in amount, quality, or timing of sleep
ex: insomnia, narcolepsy, sleep apnea
Parasomnias
Abnormal behaviors that occur during sleep
ex: somnmbulism(sleep walking), Night terrors
Consciousness Altering Drugs
Alter actions at neuronal synapses, enhancing, dampening, or mimicking the activity of the brain’s natural neurotransmitters
Depressants
Work by depressing or slowing neural activity
Ex: alcohol
Barbiturates- depress sympathetic nervous system
Opiates- depress neural functioning
Stimulants
Either increase neurotransmitter release, reduce neurotransmitter uptake, or both
Ex: caffeine, nicotine, cocaine
Hallucinogens
Distort perceptions in absence of any sensory input
Ex: LSD and Marijuana
Psychological Dependence
Often associated with use of drug in response to painful emotions related to depression, anxiety, or trauma
Physical Dependence
Evidenced by withdrawal
Withdrawal- uncomfortable and often physically painful experience w/o use of drug. Alleviated when drug is used
Addiction
Biologically based
Enjoyable behaviors produce activity in dopamine circuits in brainstem
Dopaminergic pathway is natural pathway to a feeling of reward and pleasure
Addictive drugs share same characteristic of stimulating the release of dopamine
Emotions
Consists of three components:
Physiologycal
Behavioral
Cognitive
Physiological Arousal
Excitation of body’s internal state
Sensations that accompany emotion
Universal Emotions
Expressed by all normal humans, regardless of culture
Include: happiness, sadness, fear, surprise, anger, and disgust
Yerkes-Dodson Law
Relationship between performance and emotional arousal is a U-shaped correlation: people perform best when moderately aroused
James-Lange Theory
Physiological and behavior responses lead to cognitive aspect of emotion
Emotional experience is result of the physiological and behavioral actions
Cannon-Bard Theory
The physiological and the cognitive occur simultaneously and independently; then lead to behavior reaction
Emotion and response happen independently and at the same time
Schachter-Singer Theory
Experience physiological arousal and make conscious cognitive interpreatation based on circumstances to identify emotion
Limbic System
Collection of brain structures primarily responsible for the experience of emotion
Amygdala- main structure
Hypothalamus- communicates w/ amygdala to control physiological aspects of emotion
Prefrontal cortex- Controls approach and avoidance behaviors
Hippocampus- saves emotional experiences as memories
Learned Helplessness
Sense of exhaustion and lack of belief in one’s ability to manage situations
Behaviorist Model
B.F. Skinner
Infants are trained to acquire language through operant conditioning
Noam Chomsky
Proposed that all posses an innate ‘Language Acquistion Device’ that allows us to pick up language through exposure
AKA Universal Grammar
Wernicke’s Area
Responsible for language comprehension
Nonassociative Learning
Occurs when an organism is exposed to one type of stimulus
Includes habituation, dishabituation, and sensitization
Habituation
Person learns to tune out a stimulus
Dishabituation happens when stimulus is removed and person is no longer accustomed to stimulus
Sensitization
Increase in responsiveness due to either repeated application or a particularly aversive or noxious stimulus
Stimulus produces an exaggerates response
Associated Learning
Process of learning in which one event, object, or action is directly connected w/ another
Includes classical conditioning and operant conditioning
Classical Conditioning
Two stimuli are paired in a way that the response to one stimuli changes
Ex: Pavlov’s dogs
Requires:
Neutral stimulus- elicits no intrinsic response
Unconditioned stimulus- elicits an instinct response
Conditioned stimulus- Neutral stimulus after it elicits a conditioned response
Conditioned response- Leanred response to conditioned stimulus
Classical Conditioning Steps
1) Aquisition- process of learning conditioned response
2) Extinction- when conditioned and unconditioned stimuli are no longer paired, conditioned response eventually stops occuring
3) Spontaneous Recovery- an extinct conditioned response occurs again
4) Generalization- Process where stimuli other than original conditioned stimuli elicit conditioned response
5) Discrimination- Conditioned stimulus is differentiated from other stimuli
Operant Conditioning
Uses reinforcement and punishment to mold behavior and cause associative learning
Reinforcement or punishment must occur near time of behavior
B.F. Skinner and his rats
Reinforcement
Anything that will increase likelihood that a behavior will be repeated
Positive: positive stimulus occurs immediately following behavior (Hippocampus involved)
Negative: negative stimulus is removed immediately following a behavior (Amygdala involved)
Primary: innately satisfying
Secondary: Learned reinforcers
Reinforcement Schedule
Continuous- results in rapid acquisition and rapid extinction
Intermittent- slower acquisition and greater persistence
Fixed-Ratio Schedule
Provides reinforcement after a set number of instances of behavior
Get reward after certain # of behavior
Variable Ratio Schedule
Provides reinforcement after unpredictable number of occurences
Ex: gambling
Chances that a behavior produces outcome increases w/ # of responses
Fixed-Interval Schedule
Provides reinforcement after a set period of time that is constant
Behavior will increase as reinforcement comes to an end
Variable-Interval Schedule
Provides reinforcement after an inconsistent amount of time
Provides a slow steady behavior response rate, b/c amount of time it will take reinforcement is unknown
Punishment
Process by which a behavior is followed by a consequence that decreases likelihood that a behavior will be repeated
Positive: negative stimulus paired w/ behavior
Negative: removal of reinforcing stimulus after behavior
Escape
Individual learns how to get away from aversive stimulus by engaging in a particular behavior
Helps reinforce a behavior so they will be willing to engage in it again
Avoidance
Occurs when a person performs a behavior to ensure an aversive stimulus will not be presented
Observational Learning
Learning by watching and imitating
Modeling- an observer sees behavior performed by another
Observer later imitates behavior
Likelihood of imitating is based on how successful someone finds a behavior to be
Albert Bandura- Bobo doll tests showed children imitated aggressive behavior even w/o seeing consequence
Elaboration Likelihood Model
Explains how people will be influenced or persuaded
1) Message characteristics- features of message itself, logic and numbers
2) Source characteristics- person or venue delivering message
3) Target characteristics- self-esteem, intelligence, mood of person receiving message
Central Route: people are persuaded by content
Peripheral Route: people focus on superficial
Model says people choose central only when interested in topic and not distracted; otherwise choose peripheral
Social Cognition Theory
Theory of behavior change that emphasizs interactions btw people and environment
Focuses on how we interpret and respond to external events
Reciprocal Determinism
Interaction btw persons behaviors, personal factors, and environment
1) People choose environments which shape them
2) Personality shapes how people interpret and respond to environment
3) Personality influences situation to which they react
Twin Studies
Attempt to study human behaviors and conditions by determining the concurrence of certain behaviors and conditions btw pairs
Adoption Studies
Attempt to study human behaviors and conditions by determining the concurrence of certain behaviros and conditions between biological and adoptive family members
Motor Development
1) Reflexive Movements (0-1)- primitive involuntary movements that prime neuromuscular system
2) Rudimentary Movements (0-2)- First voluntary movement performed by child. Occur in predictable stages
3) Fundamental Movements (2-7)- Child is learning to manipulate body through basic physical actions. Highly influenced by environment
4) Specialized Movements (7-14)- children learn to combine fundamental movements and apply them to tasks
5) Application of Movements (14+)- Movements are refined and applied to normal daily activities