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Psychology Flashcards

Psych1010
Alvarez

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463458160Psychology (definition)the scientific investigation of mental processes and behavior that lies at the intersection of biology and culture1
463458161Psychological processes reflect influences ofbiological processes of cells within nervous system (microlevel) context of cultural beliefs and values2
463458162biopsychology (name)behavioral neuroscience3
463458163biopsychologyseeks to understand the mind through understanding the electrical and chemical activity of the nervous system4
463458164localization of functiondifferent brain regions control different aspects of psychological functioning5
463458165most famous case of ventromedial prefrontal damagePhineas Gage6
463458166Broca(1861) damage to the left frontal lobe- impairs ability to produce fluent speech and follow rules of grammar (but language comprehension is preserved)7
463458167Wernicke(1874) damage to the left temporal lobe prevents individuals from understanding language and speaking in a way that is comprehensible (even though language is fluent)8
463458168culture (cultural influences and psychology)influence of membership in a larger group (e.g. nation)9
463458169psychological anthropologistsobserve people in other cultures in their natural setting10
463458170cross-cultural psychologiststest psychological hypotheses in different cultures (then try to distinguish universal psychological processes from those that are specific to particular cultures)11
463458171Psychological questions inherited from philosophyfree will vs. determination nature vs. nurture rationalism vs. empiricism continuity vs. discontinuity mental vs. physical12
463458172Wilhelm Wundtknown as "father of psychology" and founded 1st psychology laboratory in Germany in 187913
463458173introspectionprocess of looking inward and reporting on one's conscious experience14
463458174Edward Titschererdeveloped a school of thought called structuralism15
463458175William Jameswrote 1st psychological textbook proponent of functionalism (early school of thought influenced by Darwinism)16
463458176Thomas Kuhn(1922-1996) philosopher of science17
463458177textbook written by KuhnThe Structure of Scientific Revolutions18
463458178normal scienceresearch firmly based upon one or more past scientific achievements, achievements that some particular scientific community acknowledges for a time as supplying the foundation for its further practice19
463458179paradigmstheoretical frameworks of normal science (a broad system of theoretical assumptions that scientists use to interpret or make sense of their discipline20
463458180scientific revolutionrejection of the older paradigm along with acceptance of the novel theory21
4634581814 perspectives of psychologypsychodynamics behaviorists cognitive evolutionary22
463458182Psychology perspectivesbroad ways of understanding psychological phenomena23
463458183Sigmund Freud(1856-1939) initiated Psychodynamic perspective focused on dynamic interplay of conscious and unconscious mental forces interacting to control behaviors24
4634581843 key perspectives of psychodynamic perspectivebehavior is determined by a dynamic interplay between thoughts, feelings and wishes most mental events are unconscious Mental processes may conflict with one another resulting in anxiety25
463458185metaphor for psychodynamic processesawareness is like an iceberg (small portion above water is conscious and larger bulk below water is unconscious)26
463458186method of psychodynamic processescase study (in depth observation of behavior of one person or a small group of individuals)27
463458187data from psychodynamic processesclinical observations of behaviors, thoughts and feelings28
4634581883 criticisms of Psychodynamic theoryfailure to be scientifically grounded violation of the falsifiability criterion reliance on retrospective accounts29
463458189behavioristspsychology is the science of behavior (we acquire and maintain our behaviorists as a result of learning)30
463458190behaviorismdominant perspective in academic psychology from the 1920s to the mid 1960s that sought to discover the general laws of learning in the laboratory and to apply these laws to society as a whole31
4634581913 key premises of behaviorismenvironmentalism, experimentalism, optimism32
463458192environmentalism (premises of behaviorism)all organisms, including humans, are shaped by the environment33
463458193experimentalism (premises of behaviorism)experiments can reveal what aspects of the environment cause behavior34
463458194optimism (premises of behaviorism)people can be changed35
463458195metaphor of behaviorismhumans and other animals are like machines36
463458196method (behaviorism)experimental method (create a controlled situation to test a hypothesis about how certain environmental events will affect behavior37
463458197data (behaviorism)quantitative empirical data analyzes that can be replicated (repeated)38
463458198evolutionary perspectivebuilt on darwin's notion of natural selection (human behaviors must be understood in terms of their evolutionary and adaptive significance)39
463458199natural selectionnatural forces select traits in organisms that will be passed on to their offspring because they are adaptive (they help organisms adjust to and survive in their environment)40
4634582002 types of evolutionary psychologyethology and sociobiology41
463458201ethologystudies animal behavior from a biological and evolutionary perspective42
463458202sociobiologyexplores possible evolutionary and biological bases of human social behavior (natural selection as operates on psychological functions as well as physical functions)43
463458203metaphor (evolutionary perspective)we are all runners in a race, competing for survival, sexual partners and resources44
463458204methods (evolutionary perspective)mostly deductive, some experimental45
463458205data (evolutionary perspective)start with a known behavior in a species and attempt to explain it on the basis of evolutionary principles46
4634582069 major sub-disciplines of psychologybiopsychology development social clinical cognitive personality industrial/Organizational educational health47
463458207Biopsychology (discipline)investigates the physical basis of psychological phenomena48
463458208development (discipline)studies the way thought, feeling and behavior develop through out the lifespan49
463458209social (discipline)examines interactions of individual psychology and group phenomena50
463458210clinical (discipline)focuses on the nature and treatment of psychological processes that cause emotional distress51
463458211cognitive (discipline)examines the nature of thought, memory, sensation, perception and language52
463458212personality (discipline)examines people's enduring ways of responding in different kinds of situations and the ways individuals differ in how they tend to think, feel, and behave53
463458213Industrial/ Organizational (discipline)examines the behavior of people in organizations and attempts to help solve organizational problems54
463458214educational (discipline)examines psychological processes in learning and applies psychological knowledge in educational settings55
463458215Health (discipline)examines psychological factors involved in health and disease56
463458216Pennebaker Study (1990)College students were assessed on whether mental events influenced physical health ( 1 group wrote emotions and other didn't and their number of trips to the health center were recorded)57
4634582174 Characteristics of Good Psychological ResearchTheoretical Framework Standardized Procedures Generalizabilty of Research Objective Measurement58
463458218Theoretical Framework (theory)a systematic way of observing and explaining observations59
463458219theoretical framework (hypothesis)proposed case and effect relationship between 2 or more variables60
463458220theoretical framework (variable)a phenomenon that changes across circumstances or varies among individuals61
463458221continuous variablecan assume an infinite number of values (e.g. intelligence, body weight)62
463458222categorical variablecan assume a finite number of values (e.g. sex, gender, race)63
463458223standardized proceduresexpose the participants in a study to procedures that are as similar as possible, procedures will be the same for all participants except where variation is introduced to test a hypothesis64
463458224generalizability of researchresearchers take samples from a limited portion of the entire population (sampling must be representative of population as a whole)65
463458225generalizabilitythe applicability of the findings to the entire population of interest to the researcher66
463458226for a study to be generalizable its procedures must be:valid67
463458227internal validityare the methods/ procedures of the study sound or are they flawed?68
463458228external validitydoes the experimental situation resemble the situation found in the real world (i.e. outside the lab)?69
463458229experimenter's dilemmatrade-off in which researchers must choose to place more emphasis on external validity or on internal70
463458230objective measurement (objective)variable we want to measure (i.e. intelligence)71
463458231objective measurement (idea)to study a construct, a researcher first must devise a technique to measure it (researchers must devise ways to qualify or categorize variables so they can be measured objectively)72
463458232objective measurementa measure is a construct way of assessing (or "operationalizing") an abstract construct73
463458233reliability (measure)a measure's ability to produce consistent results (4 types)74
463458234validity (measure)a measure's ability to assess the variable of interest- does it actually measure the construct it's supposed to measure?75
4634582354 Techniques to Determine the Reliability of a measureTest-retest reliability Inter-rater reliability Alternate form Internal Consistency76
463458236Test-retest reliabilityconsistency across time (Does the test give similar values if the same person takes the same test 2 or more times?)77
463458237inter-rater reliabilityconsistency across people (2 or more raters, who independently score the same person on the same variable, should give the person the same or similar scores)78
463458238alternate formconsistency across forms (requires that there are 2 forms of the test that are the same or similar in terms of the number of items, time limits, content, etc.) (least popular method)79
463458239internal consistencyconsistency across items (different items that measure the same variable should produce similar results) (most popular method)80
4634582404 Types of ValidityFace Validity Content Validity Criterion Validity Construct Validity81
463458241Face validitywhether or not the test appears, just by looking at it as though it assesses what it purports to assess (why might a researcher not want face validity? Least important type of validity)82
463458242content validitydoes the test content measure a well-defined body of material (typically used to demonstrate validity for educational achievement and employment)83
463458243criterion validityestablishing the relationship between test performance and some external criterion (2 types)84
463458244concurrent (criterion validity)agreement between test performance and current status on another variable85
463458245predictive (criterion validity)test aims to predict status on a criterion that will be attained in the future86
477532993construct validitydegree to which a test actually measures what it claims to measure (most important type of validity)87
477532994convergent validity (construct validity)relatively high correlations between the test and other measures thought to assess the same construct as a test88
477532995discriminant validity (construct validity)relatively low correlations between the test and other measures thought to assess different constructs than the test89
477532996descriptive researchseeks to describe phenomena as they exist rather than to manipulate variables90
4775329973 methods of descriptive research1) case study 2) Naturalistic Observation 3) Survey Research91
477532998case studyan in-depth observation of the behavior of one person (or small group)92
4775329992 drawbacks of case study1) small sample size (limits generalizabilty) 2)susceptibility to researcher bias93
477533000naturalistic observationin-depth study of a phenomenon in its natural setting (good for generalizability)94
4775330012 disadvantages of naturalistic observation1) observation (per se) can alter natural behavior 2) cannot infer cause(s) of behavior95
477533002survey researchasks questions of a large sample of people to gain information on attitudes or behaviors using interviews or questionnaires96
477533003descriptive statisticssummarize (or describe) raw data to aid our understanding of data97
477533004frequency distribution (descriptive stats)organizes data into groups of adjacent scores98
477533005histogram (descriptive stats)plots score ranges along the x axis and score frequencies along the y axis99
477533006central tendency (descriptive stats)mean, median, and mode100
477533007meanstatistical average of the scores of all participants (add all scores and divide by number of participants)101
477533008medianthe score that falls in the middle of the distribution of scores (eliminates outliers)102
477533009modemost frequent score103
477533010variabilityhow much participants' scores differ from one another104
477533011range(simplest measure of variability) displays difference between highest and lowest value105
477533012standard deviationamount the average participant deviates from the mean106
477533013standard deviation equationSD=((Σ (X-M)^2) /N)) ^(1/2)107
477533014normal "bell curve" (shapes of distribution)unimodal symmetrical around its central axis (most naturally occurring phenomena are normally distributed)108
477533015Departures from normality (shapes of distribution)skewness kurtosis modes109
477533016skewness (shapes of distribution)degree of symmetry for right and left sides of curve110
477533017kurtosis (shapes of distribution)the "peakedness" of the distribution111
477533018Leptokurtic (shapes of distribution, kurtosis)more peaked than normal distribution112
477533019Platykurtic (shapes of distribution, kurtosis)flatter than normal distribution113
477533020modes (shapes of distribution)bimodal, multimodal114
477533021correlation researchdetermines degree to which 2 variables are co-related and association115
477533022cannot infer causation fromcorrelation116
477533023bivariate distributionvisually represents the relationship between 2 variables (also called a scatterplot)117
477533024correlation coefficient (r)a statistic that provides a numerical summary of the strength and direction of the relationship depicted in a bivariate distribution118
477533025range of the correlation coefficient-1.0 to +1.0119
477533026positive correlation+1 (direct relationship)120
477533027negative correlation-1 (indirect relationship)121
477533028zero correlation0 (unrelated)122
477533029independent variable (IV)manipulated by the experimenter (independent of the participants' actions-> outside of their control)123
477533030dependent variable (DV)response the experimenter measures to see if the experimental manipulation had an effect124
477533031Steps to Experimental Research1) framing a hypothesis 2) operationalizing variables 3) developing a standardized procedure 4) selecting and assigning participants 5) applying statistical techniques 6) drawing conclusions125
477533032framing a hypothesisresearcher frames hypothesis that predicts relationship between 2 or more variables126
477533033operationalizingturning an abstract construct into a concrete variable defined by some set of actions (operations)127
477533034experimental groupexperiences different conditions of IV128
477533035control groupexperiences a relatively "neutral" condition instead of being exposed to the experimental manipulation129
477533036single-blind studyparticipants are kept unaware of ("blind" to) crucial information130
477533037placebo effecta phenomenon in which an experimental invention produced an effect because participants believe it will produce an effect131
477533038double-blind studyboth participants and researchers who interact with them are blind to who has been exposed to which experimental condition until the research is completed132
477533039random assignmentessential for internal validity as it minimizes chance that participants in different groups differ in a systematic way133
477533040confounding variablevariable that could produce effects that are confused with the effects of the IV134
477533041quasi-experimental designsshare the logic and many features of the experimental method but do not allow as much control over all relevant variables (no random assignment)135
477533042How to Evaluate a Study Critically1) Assess the study's theoretical framework 2) Assess the adequacy of the sample 3) Asses the adequacy of measures and procedures 4) Examine the data 5) Examine the conclusions drawn by investigators 6) Consider the meaning of study 7) Evaluate the ethics of study136
477533043neuronscells that specialize in the transfer of information within the nervous system137
477533044neuron functionsconvey sensory information to the spinal cord and brain, carry out operations involved in thought, feeling and action, and transmit motor commands out into the body to control muscles, glands and organs138
477533045dendritesreceive information from other neurons139
477533046dendrites140
477533047cell bodycontains the nucleus and creates neurotransmitters141
477533048cell body142
477533049axonlong extension from cell body; transmits info to other neurons143
4775330502 parts of axonmyelin sheath and terminal buttons144
477533051myelin sheathderived from glial cells; insulates the axon and speeds up conduction of nerve impulses (i.e. action potentials)145
477533052terminal buttonsreleases neurotransmitters146
4775330533 classes of neurons1) sensory neurons 2) motor neurons 3) interneurons147
477533054sensory neuronstransmit information from sensory receptors to the spinal cord and brain (afferent)148
477533055motor neuronstransmit commands away from the brain to the muscles, organs and glands of the body (efferent)149
477533056interneuronspass information between the various sensory and motor neurons in the same part of the spinal cord or brain150
477533057neuron membrane(most critical factor in the neuron's ability to communicate is the membrane that encloses the neuron) holds neuron together and controls the environment within and around the neuron polarizes151
477533058neuron resting potentialmembrane of the neuron is polarized- separates charges152
4775330592 ions found in neuron membranesodium ion (Na+) potassium ion (K+)153
477533060Na+ in neuronfound mostly on outside of neuron membrane154
477533061K+ in neuronfound mostly on inside of membrane (along with a host of negatively charged anions)155
477533062Can Na+ enter membrane at rest?no because the protein channels are closed156
477533063electrical potential difference between inside and outside of neuron cell membrane-70mV157
477533064graded potentialsstimulation of the membrane opens ion channels in the membrane causing spreading voltage changes called graded potentials158
4775330652 characteristics of graded potentials1) the strength of a graded potential diminish as it travels along the cell membrane away from the source 2) the output of a single neuron is not enough to cause a neuron to fire: the postsynaptic neuron must combine graded potentials from many neurons in order to fire159
477533066spatial summation (graded potentials)combines graded potentials occurring simultaneously at different locations on the dendrites and cell body160
477533067temporal summation (graded potentials)combines graded potentials arriving a short time apart161
477533068neurotransmitterschemicals that transmit information from one neuron to another162
477533069neurotransmitter locationstored within vesicles of the presynaptic cell163
477533070when are neurotransmitters released?in response to the action potential sweeping along the presynaptic membrane164
477533071where do neurotransmitters act?diffuse across the synapse and bind the postsynaptic receptors (protein molecules that can act like "locks" that can be opened only by specific neurotransmitter "keys")165
477533072postsynaptic receptor binding functionopen and close ion channels166
477533073excitatory neurotransmittersdepolarize the membrane (e.g. opening Na+ channels) making an action potential more likely167
477533074inhibitory neurotransmittershyper-polarizes the membrane (e.g. opening K+ channels) making an action potential less likely168
477533075neurotransmitters that do not bind to postsynaptic receptors are deactivated through1) degradation by enzymes 2) reuptake into the vesicles169
4775330767 types of Neurotransmitters1) GABA 2) Glutamine 3) Norepinephrine 4) endorphins 5)Dopamine (DA) 6) Serotonin (5-HT) 7) Acetylcholine170
477533077GABAinhibitory; found in 1/3 of brain neurons involved in the regulation of anxiety alcohol and benzodiazepines171
477533078glutamineexcitatory; involved in learning, can be neurotoxic172
477533079norepinephrine (NE)regulates arousal (e.g. blood pressure) behavior and mood (has to do with anxiety and depression)173
477533080endorphinsreduce pain and elevate mood ("runner's high")174
477533081dopamine (DA)produced in the substantia nigra and released in 1 or 2 pathways175
4775330822 pathways dopamine goes through1) nucleus accumbens- pleasure reward 2) basal ganglia- voluntary movement176
4775330832 disorders associated with DA1) Schizophrenia (too much DA) (treated with drugs that block DA) 2) Parkinson's Disease (not enough DA) (treated with l-dopa a precursor to DA because DA cannot be given directly because it does not cross blood-brain barrier)177
477533084serotonin (5-HT)regulates pain, sleep, eating, emotional arousal and mood (decreased 5-HT in depression and anxiety)178
477533085acetylcholine (ACh)involved in learning and memory and muscle contractions (Alzheimer's Disease is the loss of ACh)179
477533086Peripheral Nervous system1) Somatic Nervous System 2) Autonomic Nervous System180
477533087Somatic Nervous Systemtransmits sensory information to the central nervous system and carries out its intentional/ voluntary motor commands (also called the voluntary nervous system because it is involved in intentional actions but also directs involuntary actions like balance and posture)181
477533088Autonomic Nervous Systemconveys information to and from our internal bodily structures that carry out our basic life processes182
4775330892 parts of Autonomic Nervous System1) sympathetic ("fight or flight" system) 2) parasympathetic (vegetative functions like regulating blood-sugar levels)183
478111485neuroimaging techniquesuse computer programs to convert data taken from brain scanning devices into visual images of the brain184
478111486types of neuroimaging techniquesCT scan MRI PET fMRI185
478111487CT scancomputerized tomography (produces a static picture of brain structures)186
478111488MRImagnetic resonance imaging (produces a static picture of brain structures)187
478111489PET scanpositron emission tomography (scans use radioactive glucose to map brain regions for high and low activity)188
478111490fMRIfunctional magnets resonance imaging (uses strong magnets to watch the brain as an individual carries out psychological tasks and shows brain function)189
478111491thalamus("relay station") processes information from each sensory modality (except smell) receives info from the cortex and transmits it to motor system190
478111492basal ganglia(caudates nucleus, putamen, globus pallidus) important for motor behavior as well as emotion and cognition191
478111493amygdala(limbic system) plays a major role in emotions, particularly fear192
478111494hippocampus(limbis system) crucial for explicit memories (conscious) and spatial navigation, vulnerable to stress193
478207655cerebral ventricleslateral ventricles (1st and 2nd); 3rd and 4th ventricles extend into the brain stem and spinal cord hollow pockets filled with cerebrospinal fluid (CSF)194
478207656cerebrospinal fluid (CSF)provides a cushion from physical shock carries away waste product and toxins, carries nutritional substances and neurotransmitters to cell195
478207657hydrocephalusan enlargement of the ventricles196
478207658cerebral cortexlargest part of human brain (comprising 80% of brain's mass) grayish in color and highly convoluted 3 mm thick layer of densely packed interneurons197
478207659gyrihills in the cerebral cortex198
478207660sulcivalleys in cerebral cortex199
478207661functions organization of cerebral cortexprimary areas- process raw sensory information or initiate movement association areas- involved in complex mental processes: forming perceptions, ideas and plans200
4782076624 lobes of cerebral cortexFrontal Parietal Occipital Temporal201
478207663frontal lobeabstract thinking, planning, social skills202
478207664parietal lobetouch, spatial orientation, non-verbal thinking203
478207665occipital lobevision204
478207666temporal lobelanguage, hearing, visual pattern recognition205
478207667cerebral lateralizationcerebral cortex is divided into 2 hemispheres connected by the corpus callosum206
478207668left hemispherelanguage, logic, details, analytical, thinking and positive emotions207
478207669right hemispherenon-linguistic functions (e.g. recognition of faces, places and sounds) gestalt, and negative emotions208
478207670split brain studiesstudy individuals who have had their corpus callosum surgically cut, blocking communication between the 2 hemispheres209
478207671geneunit of hereditary transmission210
478207672genes are arranged alongchromosomes- strands of paired DNA (deoxyribonucleic acid) that spiral around each other and are located in the nucleus of each cell211
478207673number of chromosome pairs in humans23 pairs of 46 chromosomes212
478207674alleleseach gene has 2 individual forms of the gene that can be dominant or recessive213
478207675homozygousboth alleles are the same (e.g. RR or rr)214
478207676heterozygousalleles are different (e.g Rr or rR)215
478207677genotypespecific genes inherited by an individual216
478207678phenotypespecific physical or behavioral characteristics associated with a particular genotype (e.g. eye color)217
478207679behavioral geneticsexamines genetic and environmental bases of differences among individuals on psychological traits218
478207680monozygotic (MZ)identical twins develop from union of same egg and same sperm219
478207681dizygotic (DZ)fraternal twins who develop from the union of 2 separate eggs and 2 separate sperm220
478207682heritability coefficientquantifies extent tow which variations in a trait across persons can be accounted for by genetic variation221
478207683heritability coefficient of zerono heritability (nurture)222
478207684heritability coefficient of 1.0trait is completely heritable (nature)223
478207685twin studies have found heritability coefficients of 0.15 to .60 for certain traitsintelligence nurturance conservatism neuroticism aggressiveness job satisfaction likelihood of divorce vocational interests224

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