Chapter 1: What is Psychology Flashcards
Chapter 2: Psychology's Scientific Method Chapter 3: Biological Foundations of Behavior Chapter 4: Sensation and Perception Chapter 6: Learning Chapter 7: Memory Chapter 5: States of Consciousness
CHAPTER 2: PSYCHOLOGY’S SCIENTIFIC METHOD
CHAPTER 2: PSYCHOLOGY’S SCIENTIFIC METHOD
what is science
science is a method. it’s not what you study, but how you study it
what are scientists purpose
theorize to explain the world
theory
a system of ideas that attempts to explain observations and make predictions about future observations
scientific method
how theories are rejected, or supported, or refined
scientific method
observe hypothesize test conclusions evaluate
step 1: observe
observe some phenomenon:
curiosity & critical thinking
formulate or challenge a theory
step 2: hypothesize
formulate hypotheses and predictions:
testable prediction
derived from theory
step 3: test
test through empirical research:
operational definition of variables
analyze data using statistical procedures
step 4: conclusions
draw conclusions:
replication of results
reliability
step 5: evaluate
evaluate the theory:
change the theory
peer review and publication
meta-analysis
descriptive research
goal: describing a phenomenon
observation
surveys and interviews
case studies
correlational research
goal: identify relationships
experimental research
goal: determine causation
external validity
representative of real world issues?
do results generalize to the real world?
internal validity
are dependent variable changes the result of independent variable manipulation?
bias? logical errors?
bias and expectations
experimenter bias demand characteristics research participant bias placebo effect solution: double-blind experiment
possible research methods
observation survey and interview case studies correlational research experimental research
population
entire group about whom conclusion is to be drawn
sample
portion of population actually observed
representative sample
characteristics similar to population
opposite of “biased sample”
random sample
each individual in population has equal chance of being selected
“artificial” world
laboratory setting, controlled setting
“real” world
natural setting, naturalistic observation
statistics
mathematical methods used to report data
descriptive
describe/summarize
measures of central tendencies
mean
median
mode
measures of dispersion
range
standard deviation
inferential
draw conclusions
APA guidelines
informed consent
confidentiality
debriefing
deception
CHAPTER 1: WHAT IS PSYCHOLOGY?
CHAPTER 1: WHAT IS PSYCHOLOGY?
psychology
the scientific study of behavior and mental process
scientific
systematic methods
behavior
what can be directly observed
mental process
thoughts, feelings, motives
science of psychology
critical thinking
skepticism
objectivity
curiosity
positive psychology
emphasizes human strengths
Wilhelm Wundt (1832-1920)
1879- established 1st psychology lab Wundt’s Structuralism
structures of the mind
introspection: systematic, detailed self-report
William James (1842-1910)
James' Functionalism: functions/purposes of the mind mind's interactions with outside world stream of consciousness why is human thought adaptive?
Charles Darwin (1809-1882)
On the Origin of Species, 1859
psychology and evolution
natural selection
competition for resources
favors genetic characteristics that promote reproduction and survival
environmental changes alter course of evolution
contemporary approaches
biological behavioral psychodynamic humanistic cognitive evolutionary sociocultural
biological appraoch
neuroscience: nervous system structure function development genetics biochemistry
behavioral approach
environmental determinants of observable behavior
reject explanations referencing thought
psychodynamic approach
freud psychoanalysis: unconscious thought conflict between biological drives and demands of society early childhood family experiences
humanistic approach
positive human qualities/potential
free will
cognitive approach
mental processes involved in knowing
information processing
evolutionary approach
explanations of human behavior: adaptation
reproduction
natural selection
sociocultural appraoch
social and cultural environments
differences:
between ethnic and cultural groups
within and across countries
health and wellness
mind-body connection:
how the mind impacts the body
how the body impacts the mind
CHAPTER 3: BIOLOGICAL FOUNDATIONS OF BEHAVIOR
CHAPTER 3: BIOLOGICAL FOUNDATIONS OF BEHAVIOR
neuroscience
study of the body’s electrochemical communication circuitry
nervous system
complex
integrated
adaptable (plasticity)
electrochemical transmission
nervous system: pathways
nerves carry information
nervous system: divisions
central (CNS) and peripheral (PNS)
central (CNS)
brain and spinal cord
Peripheral (PNS)
somatic NS: sensory nerves and motor nerves
autonomic NS: sympathetic NS and parasympathetic NS
nervous system - cells
glial cells and neurons
glial cells
provide support and nutrition
neurons
information processing: computing & communicating mirror neurons (in primates): imitation, social perception
neural impulse
negatively + positively charged ions
polarization (imbalance in charges)
resting potential
neural impulse pt. 2
semipermeable membrane ion channels depolarization threshold action potential all-or-none principle
synaptic transmission
electrical impulse is converted into a chemical signal
axon vesicle releases neurotransmitter into gap
dendrite receptor site detects neurotransmitter
neurotransmitter
carry information across the synaptic gap to the next neuron
acetylcholine
muscle actions, learning, memory
black widow venom increase ach level
botox decreases ach levels
alzheimer’s disease decrease ach levels
GABA
anxiety decreases GABA levels
glutamate
excitatory
learning and memory
involved in many psychological disorders
norepinephrine
stress and mania increase norepinephrine levels
depression decreases norepinephrine levels
regulates sleep states in conjunction with Ach
dopamine
voluntary movement
reward anticipation
stimulant drugs: activate dopamine receptors
parkinson’s disease decrease dopamine levels
schizophrenia increases dopamine levels
serotonin
regulation of sleep, mood, attention, learning
depression decreases serotonin levels
prozac increases serotonin levels
endorphines
natural opiates
mediate feelings of pleasure and pain
oxytocin
both a hormone and a neurotransmitter
related to onset of lactation in new mothers
related to attachment/emotional bonds
neural networks
interconnected pathways of nerve cells
integrate sensory input and motor output
develops across the years
studying the brain
brain lesioning: naturally occuring or induced
electrical recording: electroencephalograph (EEG)
single-unit recording
brain image
X-Ray CT Scan PET MRI fMRI
hindbrain
parts of the brain: brainstem and cerebellum
brainstem
medulla - control breathing, regulate reflexes
pons - sleep and arousal
cerebellum
motor coordination
midbrain
substantia nigra
parkinson’s disease
reticular formation
stereotyped behavior patterns (like walking)
forebrain
limbic system and thalamus
limbic system
memory and emotion
amygdala - discrimination of objects needed for survival and emotional awareness and expression
hippocampus - formation and recall of memories
thalamus
relay station for much sensory information
basal ganglia
coordination of voluntary movements
hypothalamus
eating, drinking, sexual behaviors
regulate body’s internal state
emotion, stress, reward
cerebral cortex
neocortex: outermost layer and four lobes
four lobes
occipital (vision)
temporal (hearing, language processing, memory)
frontal (intelligence, personality, voluntary, muscles)
parietal (spatial location, attention, motor control)
somatosensory cortex (in partial lobe)
body sensations/touch
motor cortex (in frontal lobe)
voluntary movements and point-to-point mapping
association cortex (75% of cortex)
not sensory or motor, but associations between
corpus callosum
large bundle of axons that connects the two hemispheres of the brain
left hemisphere
verbal processing, speech, grammar
right hemisphere
spatial perception, visual recognition, emotion
positive emotional responses
more left prefrontal lobe activity
negative emotional responses
more right prefrontal lobe activity
happy brains
prefrontal lobe asymmetry, biofeedback and mindfulness (Awareness) meditation
recovery from brain damage depends on
age of the individual and extent of the damage
repairing the damaged brain
collateral sprouting
substitution of function
neurogenesis
brain tissue grafts
genotype
genetic heritage
effects of experience and environment alters how genetic traits develop
phenotype
observable characteristics both physical and psychological
stressors
circumstances and events that threaten individuals and/or tax their coping abilities
CHAPTER 4: SENSATION AND PERCEPTION
CHAPTER 4: SENSATION AND PERCEPTION
sensation
the process of receiving stimulus energies from the external environment
perception
the process of organizing and interpreting sensory information
bottom-up processing
initiated by sensory input
outside world’s influence on perception
top-down processing
initiated by cognitive processing
internal/mental world’s influence on perception
expectations & prior understanding
sensory receptors
specialized cells that selectively detect and transmit sensory information to the brain
cells send signals via distinct neural pathways
synesthesia
one sense induces an experience in another sense
phantom limb pain
photoreception
detection of light
mechanoreception
detection of pressure, vibration, and movement
chemoreception
detection of chemical stimuli
absolute threshold
the minimum amount of energy an organism can detect 50% of the time
nosie
irrelevant and competing stimuli
JND: just noticeable difference
the amount something must be changed in order for a difference to be noticeable, or detectable at least half the time (absolute threshold)
absolute threshold for sound
would be the lowest volume that a person could detect