Sunday, May 17, 2015

Learning

Associative Learning - Certain events occur together

Types of Learning

Classical - Pavlov

  • Unconditioned Stimulus - Naturally and automatically triggers a response
  • Unconditioned Response - The unlearned, naturally occurring response to the UCS
  • Conditioned Stimulus -  After association, triggers response
  • Conditioned Response - Learned response to previously neutral stimulus
Terms
  • Acquisition - Initial stage of learning; neutral stimulus associated with UCS -> neutral stimulus elicit CR [CS before UCS; close in timing]
  • Extinction - Diminishing of conditioned response -> UCS does not follow CS
  • Spontaneous Recovery - Reappearance of extinguished CS
  • Generalization - Likelihood for stimuli similar to CS to elicit responses
  • Discrimination - Ability to distinguish between CS and other stimuli that does not signal UCS

Operant 

Learning which behavior is strengthened if followed by reinforcement or diminished if followed by punishment
  • Classical vs. Operant - Acquisition, Discrimination, SR, Generalization, Extinction
  • Classical - Automatic respondent behavior
  • Operant - Behavior influence environment, can have consequences
Edward Thorndike - (Law of Effect) Rewarded behavior likely to recover
B.F. Skinner
  • Shaping - Procedure in op. conditioning in which reinforcers guide behavior closer toward goal
  • Reinforcer - Event that strengthens behavior
    • Positive - Stimulus after response
    • Negative - Reducing/ Removal of aversive stimulus
    • Primary - innately reinforcing stimulus
    • Secondary - Reinforces through association with primary stimulus
Reinforcement Schedules
  • Continuous - Reinforces after every occurrence
  • Partial - Reinforces after certain response part
  • Fixed Ratio - Reinforces response after certain # of responses
  • Variable Ratio - Reinforces after unpredictable amount of responses
  • Fixed Interval - Reinforces after elapsed time
  • Variable Interval - Reinforces after unpredictable time intervals
Punishments - To reduce behaviors
  • Positive - Addition of something unpleasant
  • Negative - Removal of something pleasant
  • Works when done after behavior and is harsh
Token Economy - Desirable behavior -> Token
  • Can be used for prizes (reinforcers); in homes,prisons,asylums, and schools
Observational Learning - From Albert Bandura & Bobo doll -> Learning by copying behavior from others
  • Observational Learning + Operant Conditioning = Social Learning Theory
Latent Learning - Not immediately evident; Edward Toleman; Three rat experiment
Insight Learning - Wolfgang Koehler & Chimpanzees - Learn through "Ah Ha" Experience. 

Intelligence

Intelligence - Able to learn form experience, solve problems, and use knowledge to adapt to new situations.

  • Socially constructed -> culturally specific
  • One or more abilities - Factor Analysis - a stat procedure that ID's clusters of related items on a test
    • Spearman used to discover "g"
  • Multiple INT - Gardner disagrees, theory comes from savants
    • Visual/Spatial, Verbal/Linguistic, Logical/Mathematical, Bodily/Kinesthetic, Musical/Rhythmic, Inter/Intrapersonal, Natural
3 Aspects of INT- Simple-Analytical, Creative, Practical
Emotional INT - Soc. INT, ABC to perceive, express, understand, and control emotions
Brain size &  INT - +.15 correlation b/t head size and INT; MRI -> +.44 correlation with size & IQ
Brain Functions & INT - High use less active than hows (glucose); Neurological speed faster.

To assess INT

  • Mental age - Alfred Binet, Theodore Simon; Person of age should know.
    • Can predict future performance-test on children
  • IQ - Binet's research for modern IQ test called Stanford-Binet Test
    • Prob - Inconsistent on adults
  • Wechster Adult INT scale - 11 subtests and strength aves w/ FA
  • Aptitude vs. Achievement - Test to predict future performance ability vs. test to assess what person has learned

Tests

  • Standardization - Pre-tested to represent sample of people and form bell curve - Flynn Effect
  • Reliability - Extent which test has consistent results over time (Split-halves, Test & Retest)
  • Validity - Extent to measure needed measures
    • Content - Sample behavior of interest
    • Predictive - Predict future behavior
  • Change? - Age 3 - Child's IQ able IQ; Crystallized or fluid
  • Group Difference - Bell curve different for whites vs. blacks; Math different across genders; high in males
    • Why? Nature vs. Nurture
  • Test Bias - Tests discriminate; purpose could be discrimination; find type of discrimination

States of Consciousness

Sleep - State of consciousness - less aware of surroundings
Biological Rhythms

  • Annual - Seasonal Variations (Hibernate, SAD)
  • 28 Day - Menstrual
  • 24 H - Circadian Rhythm
  • 90 min - Sleep Cycles
Circadian Rhythm - Bio Clock; Bodt temperature & awareness change throughout the day

Sleep Stages

5 stages; takes 90-100 min; brain waves change depending on the stage.
1st 4 stages -> Non REM Sleep        5th stage -> REM sleep
  1. Stage 1 - Awake-ish & asleep-ish; small duration during the night. eyes slightly roll, Theta waves
  2. Stage 2 - Baseline, part of 90 min. cycle (45-60% of sleep); more theta waves -> slows down; show sleep spindles - short bursts of brain activity
  3. Stages 3 and 4 - Slow wave sleep w/delta waves; if awakened, very groggy; restores body's growth hormones and good overall health. IMPORTANT
    • 15-30 min.; slows brain activity -> delta waves have higher amp; DEEPEST SLEEP; Delta sleep needed by sleep-deprived; 40% of sleep time in children ("dead asleep")
  4. REM Sleep - Very active sleep; stage of sleep; body paralysis; 20-25% of sleep; breathing, brain activity, and heart rate increase; REM -> Stage 2

Sleep Disorders

  • Insomnia - Recurring problems falling asleep or staying asleep; not from avg. amount of sleep
  • Narcolepsy - Uncontrollable sleep attacks; Directly to REM sleep (from joy or fear)
  • Sleep Apnea - Temporary cessations in breathing while asleep and consequent momentary awakenings
  • Night Terrors - High arousal and terrified appearance in stage 4; forgotten
  • Sleepwalking - During deep nonREM sleep early in the night
 --
Dreams - Sequence of images, emotions, and thoughts through a sleeping person's mind
  • Manifest - Remembered storyline of a dream
  • Latent - Underlying meaning of a dream
Theories 
  • Freud - Key to understand hidden conflicts; ideas and thoughts hidden in unconscious
  • Information Processing - Dreams act to understand and sort out memories of the day
    • REM sleep increases after stressful events
  • Activation Synthesis - Brainstem reduces random neural activity, dreams try to interpret that activity.

Language

Language - Our spoken, written, or gestured words and the way we combine them to communicate meaning.

-emes

  • Phonemes - Spoken language - smallest distinctive sound unit [chug - ch, u, g]
  • Morphemes - Smallest unit that carries meaning; a word or part of a word

Grammar - System of rules in a language that allows us to communicate and understand others.

  • Semantics - Set of rules by which we derive meaning in a language. EX: -ed = past tense
  • Syntax - Rules for combining words into grammatically sensible sentences

Language Development

  1. Babbling Stage - 3-4 mo.; infant makes sounds, not limited to phonemes
  2. One word stage - 1-2 yrs.; one word to communicate meanings
  3. Two word stage- 2 yrs.; two words to comm.- telegraphic speech
Social Learning Theory - Skinner; Pick up through socialization
Chomsky - Acquire language too quickly to learn it; "Learning box" in head allows us to learn any human language [Inborn Universal Grammar]
Whorf's Linguistic Relativity - Language determines the way we think

Thinking

Cognition - Thinking, knowing and remembering

  • Concepts - To think about the world, mental grouping of similar objects, ideas, people
    • Like schemas
    • Based on prototypes - mental image or best example of category

Solving Problems


  • Trial & Error
  • Algorithms - Methodical logical rule or procedure that guarantees solving a particular problem.
  • Heuristics - Strategy that allows us to make judgement and solve efficiently; shortcut prone to errors
  • Insight - Sudden and novel realization of solution to problem

Obstacles

  • Confirmation bias - Likelihood to search for info to confirm self perceptions
  • Fixation - Cannot see problem from other view
  • Mental Set - Likelihood to approach problem in a particular way esp. if it worked in the past.
  • Functional Fixedness - Likelihood to think of many things only in terms of their usual functions

Types of Heuristics

  • Representativeness - Rule of thumb for judging the likelihood of things in terms of how well they match our prototype; can make us forget important info.
  • Availability - Est. the likelihood of events based on avail.; memory comes into mind easily = common
--
Overconfidence - Likelihood to be more confident than correct; overestimate accuracy of beliefs and judgements.
Framing - Why issue is posted -> drastically affects decisions and judgements
Belief Bias - Likelihood for one's initial beliefs to distort logical reasoning; makes invalid conclusions valid or vice versa.
Belief Perseverance - Clinging to your initial conceptions after basis of being discredited.

Memory

The persistence of learning over time through the storage and retrieval of information

Recall vs. Recognition

  • Recall - Retrieve info from memory
  • Recognition - Identify target from possible targets

Memory Process

  1. Encoding - Processing of information
  2. Storage - Retention of encoded material over time
  3. Retrieval - Getting info out of storage
Sensory Memory - A half second holding tank for all sensory info; Iconic/Echoic Memory
Short Term Memory - Encoded from STM; encoded visually, acoustically, or semantically; holds 7 items for 20 seconds; works better with numbers

Methods to convert STM to LTM

  • Chunking - Organizing items into familiar, manageable units.
  • Mnemonic Devices
  • Rehearsal
Long Term Memory - Limitless storehouse of information
  • Explicit (declarative) memories; includes episodic and semantic memories
  • Implicit (non-declarative) memories; includes procedural and conditioned memories
Encoding Information - Serial positioning effect 
  • Primary - We remember the first items the best
  • Recency effect - We remember the last items after just hearing them 
Spacing effect - Ebbinghaus's forgetting curve
Encoding ways
  • Visual - Encoding pictures
  • Acoustic - Encoding of sound, esp. sound of words
  • Semantic - Encoding meaning
Flashbulb Memories - Memories of significant events
Mood Congruent Memory - Memories retrieved match current mood
State Dependent Mood - Memories retrieved match current state

Forgetting
  • Retroactive interference - New info blocks out old info
  • Proactive interference - old information blocks out new information
Long Term Potentiation
  • Long-lasting improvement in signal transmission between two neurons that results fro stimulating them synchronously
  • Improved efficiency creates memories
Train your memory!

Tuesday, April 7, 2015

Developmental Pyschology

Study of you from womb to tomb.
Nature vs. Nurture - Way you were born / Way you were raised

Physical Development (Or the Way You Grow)

Prenatal - Begins with egg and sperm fertilized = zygote
  1. Zygote - Lasts two weeks with rapid cell division.
    • Less than half of all zygotes survive first two weeks
    • Attaches to uterine wall after ten days
    • Placenta - Outer part of zygote; Filters oxygen and nutrient
     2.  Embryo - After two weeks, lasts for six weeks.
    • Heart beats and organs develop
     3.  Fetus - After nine weeks; Organs formed enough for independent survival.

Teratogens - Chemicals that can harm prenatal environment. EX: Alcohol (FAS), STDs, HIV, Herpes, Drugs.

Reflexes

Inborn automatic responses
  • Rooting - When a newborn infant is touched on the cheek, infant turns its head toward the source of stimulation.
  • Grasping - If an object is placed into a baby's palm, baby will try to grasp object with fingers.
  • Moro - When startled, baby will fling limbs out and quickly retract them.
  • Babinski - When a baby's foot is stroked, it will spread its toes.
Maturation - Physical growth processes enable orderly changes in behavior, regardless of environment.
Cognition - Mental activities w/thinking, knowing, and remembering.

Cognitive Development

Researched by Jean Piaget
  • Schemas - Way to interpret world
  • Assimilation - Incorporating new experiences into existing schemas
    • High School - Meet someone -> assimilate into schema.
  • Accomadation - Changing an existing schema to adapt to new information.

Piaget

  • Sensorimotor - Experience world through senses
    • Object Permanence - 6-8 months of age
  • Preoperational - 2- 6 or 7 - Use language to represent objects and ideas; "Magical Thinking" 
    • Conservation - Quantity is the same despite changes in appearance; part of logical thinking.
  • Concrete Operational - Demonstrate conservation, logic think, understanding of reversibility.
  • Formal Operational - Abstract reasoning, hypothesis testing, reasoning with metaphors and analogies.
  • Criticisms
    • Information-Processing Model - Children learn in continuous growth pattern
    • Underestimates children's ability; Attention span grows over time.

Social Development

  • > 1 year - infants indifferent to stranger
    • Stranger anxiety - After one year, common in infants.

Attachment

  • Most important social construct (bond with caregiver)
  • Animals form attachment through imprinting (Konrad Lorenz)
    • Origins - Harry Harlow used monkeys; needed touch or body contact to form attachment. (Cloth vs. Wire)
Critical Period - After birth organism's exposure to certain stimuli or experiences produce proper development.

Types of Attachment
  • Secure - Some distress when parent leaves, seek contact at the reunion, explore when parent gone, play and greet when parent present.
  • Separation Anxiety - Anxiety when infant loses object of attachment. 14 to 18 months

Parenting Styles

  • Authoritarian - Strict standards for behavior
  • Permissive - Allows freedom, lax parenting, don't enforce rules consistently
  • Authoritative - Reasonable standards of expectation, encourage independence.

Stage Theorists

Believe we travel from stage to stage throughout lives.

Freud - Libido, travels though body in development.
  1. Oral (0-1) - Pleasure by mouth
  2. Anal Stage (1-3) - Controlling & Expelling waste
  3. Phallic Stage - Recognize gender, Oedipus/Electra complex
  4. Latency (6-11) - Cooties
  5. Genital Stage - Libido in genitals, feelings toward others.

Adolescence

Transition from childhood to adulthood
  • Puberty - Sexual maturation -> becomes capable of reproducing
    • Primary Char. - Body structures that make production possible
    • Secondary Char. - Non-reproductive sexual char.
      • Landmarks - Menarche, Spermarche

Adulthood

Physical abilities peak by mid-twenties
  • Milestones
    • Menopause - Ending of woman's ability to reproduce

Intelligence

  • Crystallized - Accumulated, increases with age
  • Fluid - Ability to solve problems quickly and think abstractly; Peaks in 20s and then decreases.
Alzheimer's - Progressive and irreversible deterioration of memory, language, and physical functioning. Caused by less ACH.

Life Expectancy

Around 75; Women outlive men by 4 years; Men conceived 126 to 100; 105 to 100 by birth.

Death

Stages of Death/Grief
  1. Denial
  2. Anger
  3. Bargaining
  4. Depression
  5. Acceptance

The Brain

Accidents - Story of Phineas Gage - Accident changes personality
Lesions - Removal or destruction of some part of the brain (Frontal Lobotomy)
Electroencephalogram (EEG) - Detects brain waves thru electrical output. Used in sleep research.
CAT Scan - 3D X-ray of brain. Useful in locating tumors, but not its functions.
MRI - Detailed picture of brain using magnetic fields. Results in movie of multiple images.
PET Scan - Measures chemical use of brain (glucose common) with injection of chemicals

Hindbrain

Top; controls basic biological structures
  • Medulla Oblongata - Above spinal cord; controls blood pressure, heart rate, breathing.
  • Pons - Above Medulla; connects hind to mid and fore; controls facial expressions
  • Cerebellum - Bottom rear "little brain"; controls fine muscle movements.

Midbrain

Coordinates simple movements w/sensory information
  • Reticular Formation - Controls arousal and ability to focus our attention

Forebrain

Largest; "humanity" - Thalamus, Limbic system, and Cerebral Cortex.
  • Thalamus - Switchboard; Interp. sensory signal and sends to forebrain; every sense except smell.

Limbic System

  • Hypothalamus - Important; controls and regulates body temp., sexual arousal, hunger and thirst, Endocrine.
  • Hippocampus - Processing and storage of memories.
  • Amygdala - How to process memory, involved in volatile emotions
Cerebral Cortex - Made up of densely packed neurons (grey matter) Glial cells: support brain cells. 
Fissures - Wrinkles in the cerebral cortex.

Hemispheres and Lobes

Contralateral Control - Right controls left and vice versa.
  • Left - Logic and sequential tasks
  • Right - Spatial and creative tasks

Frontal Lobe

  • Motor Cortex - Sends signals to our body controlling muscles
  • Broca's Area - Controls muscles producing speech
    • Aphasia -  Damaged; unable to make movements to talk.

Parietal Lobe

  • Sensory Cortex - Receives incoming touch sensations from body
    • Made up of Association Areas - Not associated with receiving sensory info or coordinating muscle mov.

Occipital Lobe

Vision - Vision Cortex - Interp. messages from eyes into understandable messages.

Temporal Lobe

Process sound sensed by our ears with Auditory Cortex
  • Wernicke's Area - Interp. written and spoken speech
    • Aphasia - Unable to understand language; poor syntax and grammar.

--------------------------------------------------------------------------------------------------------------------------

Brain Plasticity - When the brain is damaged, it will try to find new ways to reroute messages.
Corpus Callosum - Bridge of nerve fibers that connects or divides the two hemispheres.
Cerebrum - Largest part - Divided left, right, and lobes, Contains Cerebral Cortex, Controls voluntary movement, Coordinates mental activity; Center for all conscious living.



Biological School

Nervous System

  • Starts with the neuron

Firing Methods

  • Resting Charge - Slightly neg charge
  • Reach threshold if enough neurons reach dendrites
  • Go into Action Potential (firing)
All or None Response - Fires or not; no in-between

Neurotransmitter - Chemical messages released by terminal buttons

  • Acetylcholine (ACH) - Motor movement and memory. Less = risk of Alzheimer's
  • Dopamine - Motor movement and alertness. Less = Parkinson's  /  Excess = Schizophrenia
  • Serotonin - Mood control. Less = Clinical depression
  • Endorphins - Pain control. Addictive drugs deal with endorphins.
  • Norepiinephrine - Alertness and arousal. Less = Depression  /  Excess = Mania
  • GABA (gamma-aminobutyric acid) - Major inhibitory neurotransmitters. Less = Tremors, seizures, and isomnia.
  • Glutamate - Major excitatory neurotransmitter; involved in memory. Excess = Migraines (MSG avoidance)

Types of Neurons

  • Sensory - Take information from the senses to the brain
  • Inter - Messages from sensory neurons to other parts of brain or to motor
  • Motor - Send info from brain to body

Types of Nervous Systems

  • Central - Spine and Brain
  • Peripheral - Nerves outside of bone; somatic and autonomic
    • Somatic - Voluntary muscle movement, uses motor neurons
    • Autonomic - Automatic functions (Sympathetic, Parasympathetic)
      • Sympathetic - Fight or flight, heart rate up, breathing up, pupil dilation, slow digestion
      • Parasympathetic - Slows after event, heart rate down, breathing down, pupils constrict, speeds digestion.
  • Reflex - Sensory take info up thru spine to brain. Reactions when sensory reach spinal cord.
Endocrine System - System of glands that secrete hormones (Like neurons, but slower)


Thursday, March 5, 2015

Social Psychology

It is the study of how we think, influence, and relate

Social Thinking

Attribution Theory - Casual explanation for behavior

  • Behavior to situation or person's disposition

Fundamental Attribution Theory - Habit to underestimate the impact of a situation and overestimate the impact of personal disposition.

Teacher - commonly attributed to personality

Attitude - Belief or feeling that predisposes one to respond in a particular way to something

Action Guidance
  1. Minimal external pressure
  2. Attitude awareness
  3. Relevant attitude to behavior

Foot-in-the-door - Tendency for people who have first agreed to a small request to comply with a larger request


Door-in-face - Person says no to big request -> Agrees to small request


Cognitive-Dissonance Theory - We do not like when we have either conflicting attitudes or when our attitudes do not match our actions.

Clash -> Adapt attitude for balance

Social Influence


Conformity - Adjusting behavior or thinking to coincide with a group standard

Conditions:
  • One made to feel incompetent
  • Group has at least 3 people
  • Unanimous group
  • One admire's the group's status
  • No prior commitment
  • Person is observed
Reasons:
  • Normative - Approval or avoid disappointment
  • Informational - Willingness to accept others' opinions about reality

Social Facilitation - Better performance around others, especially with simple or well learned tasks. (Not with difficult or learning tasks)

Yerkes-Dodson Law - Optimal level of arousal for the best performance
Easy = High / Difficult = Low / Others = Moderate


Social Loafing -  Habit for people in a group to exert less effort in polling efforts toward a common goal then if they were individually accountable.


Deindividuation - Loss of self-awareness and self-restraint occurring in group situations that foster arousal and anonymity.


Group Polarization - Group's attitude is one of extremes; rarely normal.

EX: Black Panthers, KKK

Groupthink - Thinking that occurs when desire for harmony in decision-making overrides common sense.


Self-Fulfilling Prophecies - Person's belief about others leads one to act in ways that induce the others to appear to confirm that belief


Social Relations

Prejudice - An unjustifiable attitude towards a group of people

Stereotype - Generalized assumption about a group of people

Social Inequalities

  • Ingroup - "us", common identity
  • Outgroup - "them", the outcasts
  • Ingroup bias - tendency to believe own group is the best.

Scapegoat Theory - Prejudice provides an outlet for anger by providing someone to blame


Aggresion - Any physical or verbal behavior intended to hurt or destroy.

Biology - Genetics, Neutral Influences, Biochemical

Frustration-Aggressive Principle - Blocking of an attempt to achieve some goal creates anger, which leads to aggression.


Conflict - Perceived incompatibility of actions, goals, or ideas.

Social Trap - Situation where people must choose between act highly beneficial to self or moderately to all.

Attraction

Factors to gaining attraction:
  1. Proximity - Mere-exposure effect - More exposure = more attraction
  2. Reciprocal Liking - More likely to like someone who likes you
  3. Similarity - Opposites do not attract; Same pack flock together; Similarity breeds content.
  4. Liking through associations
  5. Physical Attractiveness

Love

  • Passionate - Aroused state of intense positive absorption of another
  • Compassionate - Deep affectionate attachment we feel in intertwined lives (Contains equity and self-disclosure

Altruism - Unselfish regard for the welfare of others.

Bystander Effect - Less willing to help if in vicinity of others

Social Exchange Theory - Our social behavior is an exchange process, which we maximize benefits and minimize costs.


Peacemaking - Give people superordinate(shared) goals that can only be achieved through cooperation. 

GRIT- (Graduated Reciprocated Initiatives in Tension Reduction)

Motivation and Emotion

Motivation -  Psychological Process that directs and maintains your behavior toward a goal.

Motive - Need, want, interest and desire that propel or drive people in certain directions

Instinct Theory - Motivated by our inborn automated behaviors.

Biological - Hunger, Thirst, Sex, Sleep
Social - Achievement, Order, Play, Autonomy, Affiliation

Drive Theory - Biological internal motivation (homeostasis)


Incentive Theory - Environmental motivation (not as much homeostasis, outside forces)


Drive-reduction Theory - Need or drive -> motivated to reduce need or drive; source of motivation lies within the person.

Hunger

  • Not from stomach - from hypothalamus
  • Why? Glucose - provides major source of energy for body tissues.
  • Insulin converts glucose to fat.

Hypothalamus
  • Lateral - Stimulation makes hunger; destroyed -> never be hungry
  • Ventromedial - Stimulation makes you feel full; destroyed -> no limit in hunger

Set Point Theory - Hypothalamus acts like a thermostat - maintain stable weight.

  • Lateral -> diet
  • Ventromedial -> gain weight

Eating Disorders

  • Bulimia Nervosa -  Binging ( eating large portions) and purging (ridding food) 
  • Anorexia - Be 85% below normal body weight, still see self as fat; mostly affects women
  • Obesity - Severely overweight to cause problems; mostly eating habits, some predisposed

Achievement Motivation

  • Intrinsic - Internal rewards (enjoyment, satisfaction)
  • Extrinsic - Outside rewards (grades, money); Great in short run
  • Over Justification - Reward for doing something you like to do results in you seeking reward as motivation for doing task. (Diminishes intrinsic motivation.

Management Theory

  • Theory X - Employees work for benefits or if threatened; Extrinsically motivated; Maslow's lower needs
  • Theory Y - Employees internally motivated to do good work; Maslow's higher needs; Policies should encourage this internal motive

Social Conflict Situations
  • Approach- Approach - 2 posi outcomes (only 1 chosen)
  • Avoidance-Avoidance - 2 nega outcomes (only 1 chosen)
  • Approach-Avoidance - Both options have posi and nega outcomes
  • Multi Approach -  Multi choices and outcomes

Emotion 

Response of the whole organism (physiological arousal, expressive behaviors, conscious experiences)

James-Lange Theory - Experience of emotion is awareness of physiological responses to emotion-arousing stimuli.


Cannon-Bard Theory - Stimuli stimulate both physiological response and subjective experience of emotion.


Two-Factor Theory - Experiencing emotion needs physical arousal and cognitive label.


Polygraph - Machine used to decipher lies by measuring perspiration, cardiovascular rates, and breathing changes (Physiological responses following emotion)


Amygdola - Neural key to fear learning

Catharsis - Emotional release

  • "Releasing" aggressive energy relieves aggressive urges.

Feel-good, do-good phenomenon - Tendency to be helpful when already in a good mood.


Adaption-Level Phenomenon - Tendency to form judgments relative to a "neutral" level (brightness, volume, level of income); defined by prior experience.


Relative Deprivation - Perception that one is worse off relative to those with whom one compares oneself.

Tuesday, February 10, 2015

Experimental methods in psychology tutorial





This video explains the experimental method in detail

Research Methods

Hypothesis - Expresses relationship between two variables

Variables

  • Independent - Whatever is being manipulated
  • Dependent - Measured
  • Confounding - Anything that manipulates, but is not the independent variable.
  • Operational - Explain what your hypothesis means

Definitions - Measured in 'real life' terms

Sampling -  Identify population subject; must be representative of population you study

Experimental Method - Prove casual relationships; Cause = Effect

  • Hawthorne Effect - Control group can change

Correlational Method - Expresses relationship between two variables; does not show causation

Survey Method - Most common study; measures correlation; cheap and fast

  • Needs a good random sample; low response rate

Naturalistic Observation - Watch subjects in their natural environment

Correlation Coefficient - A number that measures strength of a relationship; from -1 to +1; Weaker closer to zero.

Case Study - Detailed picture of one or few subjects

  • Great story; no correlational data - just descriptive. 

Statistics - Recording results from studies

  • Need common language for understanding
  • Descriptive Statistics - describes sets of data
  • Range - Distance from highest to lowest scores

Standard Deviation - Variance of scores around the mean

  • Higher variance = More Distribution Spread
Z scores - Unit that measures the distance of one score from the mean
  • + = Above the mean
  • - = Below the mean

Ethical Guidelines for Research

Animal Research

  • Clear purpose
  • Treated in a humane way
  • Acquire animals legally
  • Least amount of suffering possible

Human Research

  • No coercion, must be voluntary
  • Informed consent
  • Anonymity
  • No significant risk
  • Must debrief

Thursday, January 29, 2015

Personality

Interestingly, I found a bunch of mini lessons on personality from the Jung perspective. Here are a couple of screenshots from some of the lessons:








Abnormal Psychology

Abnormal psychology 

 A "harmful dysfunction" in which behavior is judged to be atypical, disturbing, maladaptive, and unjustifiable.

  • Trephination - To release evil spirits

  • DSMIV(Diagnostic Statistical Manual of Mental Disorders) It helps to identify disorders and describe symptoms. However, it does NOT find causes or cures.

  • Neurotic Disorders - Distressing, but fine

  • Psychotic Disorders - Loses reality, distorted perceptions
Anxiety Disorders - Conditions where symptoms are anxiety. Fears of something awful; state of intense apprehension, uneasiness, uncertainty.

  1. Phobias - Episode of intense dread
  2. GAD - (Generalized Anxiety Disorder) Constantly anxious; nervous system arousal. Worried, inadequate, oversensitive; isomnia
  3. Panic Disorder- 1 min. episode of dread: terror with chest pain, frightening sensations.
  4. OCD - Obsessions causes complusions to do a certain action
  5. PTSD - Flashbacks following someone's involvement in an extremely sensitive event. Memories can cause anxiety.

Somatoform Disorders - Psychological problem through physiological problem.

  • Hypochondriasis - Frequent complaints which doctors cannot find cause.
  • Conversion disorder- Report of severe physical problems with no biological reason.

Dissociative Disorders -  Disruption in the thinking process

  • Psychogenic Amnesia - cannot remember things with no physiological basis for disruption of memory
  • Dissociative Fugue - find themselves in an unfamiliar environment
  • Dissociative Identity Disorder - (Multiple Personality) Several integrated personalities. History of childhood abuse or trauma.

Mood Disorders - Extreme or inappropriate emotion

  • Depression - At least two weeks; unknown cause; "common cold."
  • Dysthymic Disorder- Mild depression; 24/7 for two years.
  • Seasonal Affective Disorder - During winter; based on sunlight.
  • Bipolar - Formally manic depression; periods of depression; Manic episodes high energy.

Personality Disorders - Well-established maladaptive ways of behaving that negatively affect functionality. Dominates personality.

Antisocial P.D - Lack empathy; don't care; world is hostile; independent.
Dependent P.D - Rely too much on attention and assistance
Histrionic P.D - Needs to be the center of attention
Narcissistic P.D - Unwarranted sense of self-importance; center of universe.

Schizophrenic Disorders - 1/100 - Disorganized thinking, disturbed perceptions, inappropriate emotions and actions

Thinking - Fragmented, bizarre, false beliefs; from breakdown in selective attention - no filter
Delusions:
  1. Persecution - Being pursued
  2. Grandeur - Being godly
Perceptions:
  • Hallucinations - sensory experiences without sensory stimulation
Inappropiate - Laugh at bad time; Flat effect - emotion down; Senseless, compulsive; Catatonia - motionless wavy flexability.
Positive vs. Negative - Posi: presence of inappropriate symptoms. Negi: Absence of inappropriate emotions.

Types

Disorganized - in speech or behavior; inappropriate emotion ('Imagine the worst')
Paranoid - Preoccupied with delusions or hallucinations ( 'Someone is chasing me!!!')
Catatonic - Copycat of others' speech and movements
Undifferentiated - Many and varied symptoms