Psych Final Flashcards
What does the term psychology mean?
The scientific study of the mind and behavior
What makes psychology a science?
- Psychology is a social science.
- No biological organism exists in isolation, and our behavior is influenced by our interactions w others
Wilhelm Wundt (1832-1920)
- German scientist who was the first psychologist
- Viewed psych as a scientific study of conscious experience.
- Believed that the goal was to identify components of consciousness and how those components combined to result in our conscious experience.
- Used introspection (“internal perception”)
Introspection (“Internal Perception”)
- Used by Wundt
- A process by which someone examines their own conscious experience, making the human mind like any other aspect of nature that a scientist observed.
- Requirements for introspection:
- The use of “trained” or practiced observers, who could immediately observe & report a reaction
- The use of the repeatable stimuli that always produced the same experience in the subject and allowed the subject to expect & thus be fully attentive to the inner reaction.
- These requirements were used to eliminate “interpretation”
Structuralism
- An attempt to understand the structure or characteristics of the mind. (Focused on individual parts of the mind)
- Created the first lab at the University at Leipzig.
- Founded by Wilhelm Wundt and mainly identified with Edward Titchener
William James and Functionalism(1842-1910)
- The first American psychologist
- Used Darwin’s theory of evolution by natural selection & accepted it as an explanation of an organisms characteristics.
- The idea that natural selection leads to organisms that are adapted to their environment, including their behavior.
- James believed psych’s purpose was to study the function of behavior in the world, and as such, his perspective was known as functionalism.
Functionalism
- William James
- Focused on how mental activities helped an organism fit into its env.
- Functionalists were more interested in the operation of the whole mind.
- Believed that introspection could serve as one means to study mental activity.
* *James relied more on objective measures, including the use of various recording devices, and examinations of concrete products of mental activities & of anatomy and physiology.
Freud & Psychoanalytic Theory
- Fascinated by patients suffering from hysteria and neurosis
- Theorized that his patients problems came from the unconscious mind.
- Believed the unconscious mind was a repository of feelings and urges of which we had no awareness
- Freud believed the unconscious mind could be accessed through dream analysis, by examinations of the first words that came to peoples minds, and thru innocent slips of the tongue.
Psychoanalytic Theory
- Sigmund Freud
- Focuses on the role of a persons unconscious, as well as early childhood expereinces
- The method of psychoanalysis, which involves the patient talking about their experiences and selves was popularized by Freud.
- Drew Westen argues that many of the criticisms of Freuds ideas are misplaced
Drew Westen
- Drew Westen argues that many of the criticisms of Freuds ideas are misplaced
- Westen argues that critics fail to consider the success of the broad ideas Freud introduced such as
- The importance of childhood experiences in adult motivations
- The role of conscious vs. unconscious motivations in driving our behavior
- Motivations can cause conflicts that affect behavior
- The effects of mental representations of ourselves and others in guiding our interactions.
- The development of personality overtime
Wertheimer, Koffka, Kohler & Gestalt Psych
A major emphasis of Gestalt psych deals with the fact that although a sensory experience can be broken down into individual parts, how those parts relate to each other as a whole is often what the individual responds to in perception.
- This perspective would have directly contradicted Wundt’s idea of structuralism.
- Considering the human as whole rather than as a sum of individually measured parts became an important foundation in humanistic theory.
Pavlov, Watson, Skinner, and Behaviorism
- Early work in the field done by Ivan Pavlov
- Pavlov studied a form of learning behavior called a conditioned reflex.
Conditioned Reflex (Pavlov)
- An animal or human produced a reflex (unconscious) response to a stimulus and over time, was conditioned to produce the response to a different stimulus that the experimenter associated with the original stimulus.
- The reflex Pavlov worked with was salivation in response to the presence of food.
- Pavlov’s “classical conditioning” is only one form of learning behavior studied by behaviorists.
John B. Watson
- Father of Behaviorism
- Believed the study of consciousness was flawed
- Watson was a major proponent of shifting the focus of psychology from the mind to behavior, and this approach of observing and controlling behavior came to be known as behaviorism.
- Focused on learned behavior & its interactions with inborn qualities of the organism
- Behaviorists used animals in experiments(could relate findings back to us)
B.F Skinner (Behaviorist)
- Concentrated on how behavior was affected by its consequences
- Spoke of reinforcement & punishment as major factors in driving behavior
- Developed a chamber known as an operant conditioning chamber (or skinners box)
Humanism
- A perspective within psych. that emphasizes the potential for good that is innate to all humans.
- Maslow & Rogers
Abraham Maslow & Humanism
- Proposed a hierarchy of human needs in motivating behavior
- Maslow said so long as basic needs for survival are met (e.g food, shelter, etc), higher level needs (social needs) would begin to motivate behavior.
- The highest level needs relates to self actualization, a process by which we achieve our full potential .
- The focus on the (+) aspects of human nature that are characteristic of the humanistic perspective is evident
Maslow’s Hierarchy of Needs
Refer to notes
Carl Rogers & Humanism
-Emphasized the potential for good that exists within all people
-Used technique.. Client-Centered Therapy
-Rogers believed that a therapist needed to display 3 features to maximize the effectiveness of the
approach :
*Unconditional Positive Regard
*Genuineness
*Empathy
Client Centered Therapy ( Rogers)
- Carl Rogers
- Involves the patient taking a lead role in the therapy sesh.
Unconditional Positive Regard (Rogers)
- Carl Rogers
- Refers to the fact that the therapist accepts their client for who they are, no matter what they say.
Multicultural Pysch
-Studying of any one racial group could not be extended to the other groups, & yet potential causes of the differences were not measured.
-1920. CECIL SUMNER was the first A.A to receive a phD in psych in US.
Most of the work done by A.A psychologists was dedicated to testing and intelligence testing
-2 famous A.A psychologist (Mamie Clark and Kenneth Clark). Best known for their studies conducted on A.A children & internalized racism, research that was critical for the Brown v Board of education case. Clarks opened the first child guidance center in Harlem.
Biopsychology
- Explores how our biology influences our behavior. Want to understand how the structure & function of the nervous system is related to our psychology.
- Focuses on the immediate causes of behavior based in the physiology of a human or other animal.
- A component of neuroscience
- Some research interests include: sensory and motor systems, sleep, drug use and abuse, ingestive behavior etc.
Evolutionary Psych
- Seeks to study the ultimate biological causes of behavior.
- The study of behavior in the context of evolution has its origins with Charles Darwin. He was well aware that behaviors should be adaptive to physical and social environments.
- To be subject to evolution by natural selection, a behavior must have a significant genetic cause.
- We expect all human cultures to express a behavior if it is caused genetically, since the genetic differences among human groups are small.
Approach to Evolutionary Psych
- To predict the outcome of a behavior in a particular situation based on evolutionary theory & then to observe/conduct experiments, to determine whether the results match the theory. (These studies not strong evidence that a behavior is adaptive)
- Some evolutionary psych, are content to assume the behaviors they study have genetic determinants
A drawback of evolutionary psych
-The traits we possess now , evolved under environmental & social conditions far back in human history, & we have a poor understanding of what these conditions were.
Sensation & Perception
- Scientists interested in both physiological aspects of sensory systems as well as in the psychological experience of sensory info work within the area of sensation and perception.
- Our experience (or perception) is complex & is influenced by where we focus our attention, our previous experiences,,, & even our cultural backgrounds
Cognitive Psych
- Is the area of pysch that focuses on studying cognitions, or thoughts, & their relationship to our experiences & our actions
- Like biological psych, it involves collabs w/ people from a diverse range of disciplinary backgrounds
- Cognitive Science. Research interests range from attention to problem solving to language to memory.
Developmental psych
The scientific study of development across a lifespan. Interested in processes related to physical maturation, changes in cognitive skills, moral reasoning, social behavior, & other … psychological attributes
-Jean Piaget demonstrated that very young kids do not exhibit object permanence
Object Permanence
- Jean Piaget
- Refers to the understanding that physcial objects continue to exist even if they are hidden from us.
Personality Psych
- Focuses on patterns of thoughts & behaviors that make each person unique. Freud, Maslow, Gordon Allport all contributed to early theories.
- Freud proposed that personality arose as conflicts between the conscious & unconscious parts of the mind that were carried out over the lifespan. Theorized that a person went through various psychosexual stages of development
- Research is focused on identifying personality traits, measuring these traits, and determining how these traits interact in a particular context to determine how a person will behave in any situation
- Personality traits are relatively consistent patterns of thought and behavior
- Five trait dimensions are known as the “Big 5” or the “Five factor model”. This captures variations in personality
Social Psych
- Focuses on how we interact w/ and relate to others
- Conduct research on: *differences in how we explain our own behavior v.s how we explain the behaviors of others, prejudice, attractions, & how we resolve interpersonal conflicts
- Sought to determine how being among other people changes our own behavior &patterns of thinking.
- Stanley Milgram (Held the most controversial experiment)
Stanley Milgram
- Social Psychologist
- Held the most controversial experiment ever
- During the time when Nazi was criminal was on trial. Nazi said he did those things because he was obeying orders.
- Milgram tested this theory and found that 2/3 of participants were willing to deliver what they believed to be lethal shock, b/c an authority figure said so
- Milgram’s & others studies that involved deception & potential emotional harm to study participants catalyzed the development of ethical guidelines for conducting research.
Health Psych
- Focuses on how health is affected by the interaction of biological, psychological, and sociocultural factors, known as biopsychosocial model.
- Interested in helping ppl achieve better health thru public policy, education, intervention, & research
- Conducts research on relationship btwn one’s genetic makeup, patterns of behavior, relationships, psychological stress, health
Sport and Exercise Psych
- Study of the psychological aspects of sport performance, including motivation & performance anxiety, & the effects of sports on mental and emotional wellbeing
- Includes interactions btwn mental and physical performance under demanding conditions, such as firefighters, surgery, etc
Clinical Psych
- Focuses on the diagnoses & treatment of psychological disorders & other problematic behaviors
- Counseling Psych
- Freud & Rogers: very influential in how clinicians interact w/ ppl seeking psychotherapy. Roger’s ideas about client-centered therapy is very influential
- Both behaviorism & the cognitive revolution have shaped clinical practice in the forms of behavioral therapy, cognitive therapy, cognitive-behavioral therapy
Alfred Binet
- Reliable intelligence testing began in 1900s with a researcher named Alfred Binet. Binet was asked by the French government to develop an intelligence test to use on children to determine which ones might have difficulty in school; it included many verbally based tasks.
- Standardization means that the manner of administration, scoring, and interpretation of results is consistent.
- Norming involves giving a test to a large population so data can be collected comparing groups, such as age groups. The resulting data provide norms, or referential scores, by which to interpret future scores. This new version of the test was called the Stanford-Binet Intelligence Scale
IQ Tests
-Describes a score earned on a test designed to measure intelligence. IQ tests have sometimes been used as arguments in support of insidious purposes, such as the eugenics movement. The infamous Supreme Court Case, Buck v. Bell, legalized the forced sterilization of some people deemed “feeble-minded” through this type of testing, resulting in about 65,000 sterilizations.
Different Types of Research Methods
- Case Study
- Survey
- Naturalistic Observation
- Laboratory Observation
- Psychological Tests
- Experiment
Experimental
- Only thing that can prove cause and effect!
- Only research method that requires random assignment
- Where researchers manipulate on or more factors (independent varible) to study its effect.
- Allows for claims of causality
Correlational
- Means that there is a relationship btwn 2 or more variables, but this relationship DOES NOT necessarily imply cause+ effect.
- Correlation coeffienct is a # from -1 to +1 that indicates the strength & direction of the relationship btwn variables. Usually represented by the letter r.
- The # portion of the c.c indicates the strength of the relationship
- the closer the # is to +1 or -1, the more strongly related the variables are & the more predictable changes in 1 variable will be as the other variables
(-1 highest inverse relationship)
- The closer the # is to 0, weaker relationship, less predictable
- 0=variables not related at all
Case Study
- Focus on 1 person or a few individuals.
- Can gain tremendous amount of insight, richness of info collected is unmatched.
- This approach is used when studying ppl who are interesting to researchers b/c they have a rare characteristic.
- Difficult to generalize any observations to the larger population as a whole.
Naturalistic Observation
- Observing behavior in its natural setting
- Want researchers to be inconspicuous
- Not just limited to humans, Jane Goodall studied chimps for 50 years in Africa.
- Greatest benefit of naturalistic observation is the validity, or accuracy.
- Major downside: often difficult to set up and control
- Sometimes studies involve structured observation, ppl are observed while engaged in set, specific tasks.
- Strange Situation by Mary Ainsworth
Random Assignment
The procedure of assigning participants to the experimental and control conditions by chance to minimize preexisting differences between those assigned to the different groups
Operational Definitions
-A description of how we will measure our variables, it is important in allowing others to understand exactly how & what a researcher measures in a particular experiment
-How you define the independent and dependent variables
better the definition, easier to replicate
Independent Variable
-Manipulated or controlled by the experimenter. The only important difference between the experimental and the control groups.
Dependent Variable
-What the researcher measures to see how much effect the independent variable had. In our example, the dependent variable is the # of violent acts displayed by the experimental participants
Placebo Effect
Occurs when ppls expectations or beliefs influence or determine their experience in a given situation. Simply expecting something to happen, can make it happen.
Single Blind Study
-One of the groups (participants) are unaware as to which group they are in (experiment or control) while the researcher who developed the experiment knows. Makes the results less likely to be biased
Double Blind Study
Both the researchers & participants are blind to group assingments. Can control for both experimenter and participant expectations.
-Avoids placebo effect
Informed Consent
Participants must sign this form. Provides a written description of what participants can expect during the experiment, including potential risks and implications.
IRB
Any research institution that receives federal support for research involving human participants must have access to an institutional review board (IRB)
Debriefing
In cases where deception is involved, participants must recieve a full debriefing upon conclusion of the study-complete honest info, why they used deception
Deception
Involves purposely misleading experiment participants in order to maintain the integrity of the experiment, but not to the point where the deception could be considered harmful
Animal Research
- Rodents and birds are often used
- 90% of all animal research in psych use these species
- Institutional Animal Care & Use Comittee (IACUC)
Darwin’s Theory
-Theory of evolution by natural selection.
* Organisms that are better suited for their env. will survive & reproduce, while those that are poorly suited for their env will die off.
Some adaptations that have been beneficial:
*fear response, *food preference, * mate selection, *cooperative behaviors
Central Nervous System
-Comprised of the brain & spinal cord
Peripheral N.S
- PNS connects CNS to the rest of the body. Has 2 major subdivisions: The Somatic Nervous System and the Autonomic Nervous System
- -all nerves not encased in bone/outside brain and spinal cord
Somatic N.S
Associated with activities traditionally thought of as conscious or voluntary. Involved in the relay of sensory & motor info to & from the CNS.
Motor Neurons
Carrying instructions from the CNS to the muscles. Are efferent fibers (efferent means “moving away from”)
Sensory Neurons
Neurons that carry incoming information from sensory receptors (sensory organs) to Central Nervous System. Are afferent fibers (afferent means “moving towards”)
Sympathetic Nervous System
- Involved in preparing the body for stress related activites.
- Fight or flight
Parasympathetic Nervous System
- Rest and digest
- Associated w/ returning the body to routine, day to day operations
Autonomic N.S
-Controls our internal organs and glands and is generally considered to be outside the realm of voluntary control. Can be divided into sympathetic and parasympathetic.
Reflexes
Automatic responses to stimuli illustrate work of spinal cord. No input from the brain.
ex: knee jerk response, withdrawal from heat.
Withdrawal Reflex
Soma
The nucleus of the neuron is located in the soma.
Dendrite
The soma has branching extensions known as dendrites.
- They serve as input sites where signals are recieved from other neurons.
- Conducts impulses towards cell body
Axon
Signals from the dendrites are transmitted electrically across the soma and down the axon, which ends in the terminal bouton
-Extension of a neuron that sends information to other neurons, muscles, or glands
Terminal Bouton
-Contain synaptic vesicles that house neurotransmitters, the chemical messengers of the nervous system.
Why do some neurons have Myelin Sheath?
- layer of fatty cells that insulate the axon
- helps speed neuron’s impulses ( increases speed at which signal travels)
- breakdown of myelin sheath = multiple sclerosis
Sequence of reactions that occur when neural impulse is generated and transmitted
- 1) electrical impulses (action potentials) travel down a neuron’s axon until reaching synapse
2) when reaching axon terminal, it stimulates the release of neurotransmitters, which cross the synaptic gap and bind to receptor sites on the receiving neuron. This allows ions to enter the receiving neuron and excite or inhibit a new impulse
3) reuptake
Reuptake
- Once the signal is delivered, excess neurotransmitters in the synapse drift away, are broken down into inactive fragments, or are reabsorbed in a process known as reuptake.
- *Purpose is to clear synapse
Brain Stem
The medulla, pons, midbrain
- “oldest” part of the brain
- life functions = keep you alive
- includes pons, medulla, cerebellum, and reticular formation
- innermost brain region
Mid Brain
- Comprised of structures located deep within the brain, between the forebrain, & the hindbrain
- The reticular formation is centered in the midbrain. Regulates the sleep/wake cycle arousal, alertness, &motor activity.
- The substania nigra (“black substance”) & the ventral tegmental area (VTA) are also located in the midbrain.
- Both regions contain cell bodies that produce the neurotransmitter dopamine, & both are critical for movement
- *Degeneration of the substania nirgra & VTA is involved in Parkinsons disease
- **These structures invovled in mood, reward, & addiction
Cerebrum
- 4 lobes:
- Frontal
- Parietal
- Temporal
- Occipital
Medulla
- automatic life functions
- autonomic nervous system
- heart-rate and breathing and blood pressure
- extension of spinal cord
- at the base of the brainstem
Frontal Lobes
Control motor responses, and higher mental functions, such as thinking, planning, problem solving, decision making, and accessing & acting on stored memories.
Parietal Lobes
Process info relating to sensations of touch, pressure, temp, pain, and body movement
Temporal Lobes
Process auditory info, giving rise to sensations of sound.
-Audituory cortex located in here
Occipital Lobe
Process visual info, giving rise to sensations of vision
-Contains primary visual cortex
How do we observe & measure the brain?
- Lesioning
- EEG
- MRI
- CT/CAT scan
- PET Scan
Phineas Gage and “Tan”
Gage: An iron rod into his face thru his skull, was able to get up, walk, speak, was conscious
- Behavior changes-> began to behave in odd and inappropriate ways
- The rod damaged the limbic system (emotional processes)
- Therefore, had trouble controlling emotional impulses
Sleep
A state marked by relatively low levels of physical activity and reduced sensory awareness that is distinct from periods of rest that occur during wakefulness.
Why do we sleep?
- An evolutionary hypothesis of sleep holds that our sleep patterns evolved as an adaptive response to predatory risks, which increases in darkness.
- Important for cognitive function & memory formation
- Some benefits include creative thinking, language learning, & inferential judgements
Rapid Eye Movement (REM)
Sleep is characterized by darting movements of the eyes under closed eyelids. Brain waves during REM sleep appear very similar to brain waves during wakefulness. Final stage of sleep
- Dreaming occurs
- Associated w/ paralysis of muscle systems in the body
- referred to as paradoxical sleep b/c of this combo of high brain activity & lack of muscle tone
- involved in emotional processing & regulation
- REM Rebound
Non-REM (NREM)
Is subdivided into 4 stages distinguished from each other & from wakefulness by characteristic patterns of brain waves.
-Stage 1- Alpha waves (low frequency, high amplitude)
Stage 2:Theta waves. Interupted by sleep spindles (rapid bursts of higher frequency brain activity that may in some cases occur in response to environmental stimuli)
Stage 3 and 4: Low frequency, high amplitude delta waves. Deep sleep or slow wave sleep
Learning
- A relatively permanent change in behavior or knowledge that results from experience.
- Involves a complex interaction of consciouss & unconscious processes
Learning
- A relatively permanent change in behavior or knowledge that results from experience.
- Involves a complex interaction of consciouss & unconscious processes
Behaviorist believe in studying events that are what?
- Behavioral psychology, is a theory of learning based on the idea that all behaviors are acquired through conditioning.
- Believe that our responses to environmental stimuli shape our actions.
Classical Conditioning
- ivan Pavlov (Dogs digestive system and salivation)
- Organisms learn to associate events or stimuli that repeatedly happen tg
Unconditioned Stimulus (UCS)
a stimulus that elicits a reflexive response in an organism
Unconditioned Response (UCR)
a natural reaction to a given stimulus
Neutral Stimulus (NS)
A stimulus that does not naturally elicit a response, presented before an unconditioned stimulus.
BEFORE CONDITIONING: meat powder(UCS)-> salivation(UCR)
AFTER:
tone(NS)+meat powder (UCS)->salivation (UCR)
**the neutral stimulus became the conditioned stimulus (CS)
tone(CS)->salivation(CR)
Extinction
- Is the decrease in the conditioned response when the unconditioned stimulus is no longer presented w/ the conditioned stimulus
- there is gradual weakening & disappearance of the conditioned response
Stimulus Generalization
When an organism demonstrates the conditioned response to stimuli that are similiar to the condition stimulus.
**The more similiar a stimulus is to the conditioned stimulus, the more likely the organism is to give the conditioned response (opp of discrimination)
Stimulus discrimination
When an organism learns to respond differently to various stimuli that are similiar.
- *The organism demonstartes the conditioned response only to the conditioned stimulus
ex: Pavlovs dogs differentiated the tone bell to the door bell, b/c the other sounds did not predict the arrival of food
John B Watson
– Father of American Behaviorism – studied classical conditioning of emotions
-Used pavlov’s method w/ little albert by instilling fear into him thru the use of a cute rat &LOUD banging noise
Operant Conditioning
- is a method of learning that occurs through rewards and punishments for behavior.
- BF. Skinner
Operant Conditioning
-The target behavior is followed by reinforcement or punishment to either strengthen or weaken it, so that the learner is more likely to exhibit the desired behavior in the future.
B.F SKinner (skinners box)
Positive reinforcement
A desirable stimulus is added to increase a behavior
Negative reinforcement
An undesirable stimulus is removed to increase behavior
ex: when u dont buckle up, the car beeps od until u fasten ur seatbelt.
Positive/presentation Punishment
Adding something to decrease the likelihood of an event happening again. Ex. Extra homework for cutting class
Negative/removal punishment
You remove a pleasant stimulus to decrease behavior.
EX. when a child misbehaves, a parent can take away toy. Prison. Time out
Shaping
- Reward successive approximations of a target behavior
- Needed b/c it is extremely unlikely that an organism will display anything but the simplest of behaviors spontaneously.
- Uses stimulus discrimination
Fixed
The # of responses btwn reinforcements, or the set amount of time btwn reinforcements, which is set & unchanging
Variable
The # of responses or amount fo time btwn reinforcements which varies or changes
Interval
The schedule is based on the time btwn reinforcements
Ratio
The schedule is based on the # of responses btwn reinforcements
Fixed interval reinforcement schedule
When behavior is rewarded after a set amount of time
Variable interval reinforcement schedule
The person or animal gets the reinforcement based on varying amounts of time, which are unpredictable
Fixed ratio reinforcement schedule
there are a set # responses that must occur before the behavior is rewarded
-Fixed ratios are better suited to optimize the quantity of output, whereas, a fixed interval, in which the reward is not quantity based, can lead to higher quality of output
Variable ratio reinforcement schedule
the # of responses needed for a reward varies. Most powerful partial reinforcement schedule
EX. gambling
Most productive and most resistant to extinction