Exam 1 Flashcards
Psychology is…
A scientific discipline.
Why is psychology necessary?
We “already understand” people; are overconfident; and are fooled by errors of randomness.
Parts of the scientific method are?
Theory, hypothesis, and experimentation
Theory
An idea that must have testable predictions.
Hypothesis
A prediction about variables.
Experimentation
How variables are studied.
Descriptive studies
Observe
Correlational studies
Predict
Experimental studies
Explain
Operational definitions
Precise procedural explanations of variables in a study; very specific explanation.
Correlations
Statistical measurement; how closely two variables vary together.
Positive correlation
As one goes up, the other goes up.
Negative correlation
As one goes up, the other goes down.
No/none correlation (null)
As one goes up, the other is random.
If two variables are correlated, does that mean one causes the other?
No! Correlation does not mean causation.
Independent variable
What you manipulate.
Dependent variable
What you measure.
Confounding variables
Uncontrolled factors that might affect the dependent variable.
P-value
P < 0.5 hypothesis accepted
P > 0.5 hypothesis rejected
T-test
Compares dv scores across research groups.
Phrenology
(Not true at all) the brain grows and shrinks, which causes the skull and scalp to change shape.
Tools of discovery
Case study, stimulation, lesion (intentially damaging the brain), and record activity (brain scans).
Resection
Surgical removal of part of the brain.
Phineas Gage
Removed frontal tissue of his brain; lost ability to control impulses.
Cerebellum
Motor coordination and movement; very dense.
Hippocampus
Memory consolidation and internal GPS.
Amygdala
Emotional perception and expression.
What is the primary emotion the amygdala is concerned with?
Fear
Hypothalamus
Basic motivation (food and sex).
Subcortical means…?
Below the cortex.
Subcortial parts of the brain
Cerebellum, hippocampus, amygdala, and the hypothalamus.
Controls the subconscious
The subcortical portion of the brain.
Controls your conscious state
Cerebral cortex
Lobes of the cerebral cortex
Frontal, parietal, temporal, and occipital lobes.
Motor cortex
Controls muscle movement; frontal lobe.
Somatosensory cortex
Feelings of touch on the skin; parietal lobe.
Auditory cortex
Hearing; temporal lobe.
Visual cortex
Vision; occipital lobe.
Brain in blind/deaf people
Reorganizes itself; heightened senses.
Right brain controls…
Left side of the body.
Left brain controls…
Right side of the body.
Wernicke’s region
All sensory input for language.
Broca’s region
All motor output for language.
Left brain dominates…
Language
Right brain dominates…
Processing space
Split-brain
When the connection between the left and right brain breaks.
Prefrontal cortex
“CEO” of the brain.
Dendrites
Data processing; receive messages.
Axon
Pass messages away from the cell body.
Neural impulse
Action potential; electrical signal.
Myelin sheath
Helps speed up neural impulses; covers axon.
Characteristics of a action potential
Threshold (starting force); all-or-none (equal); and refractory reset).
Neurotransmitters
How neurons talk to each other (dopamine, serotonin, etc).
Neuron plasticity
Neurons and their networks can change.
Nature
Inherited genetics
Nurture
Environment and experiences.
Behavior genetics
Study of the relative power and limits of genetic and environmental factors on behavior.
Psychological variables (genetic)
Risk for mental illness and drug use, personality, and intelligence.
Psychological variables (environment)
Social variables like attitudes, manners, and faith.
Evolution
Traits are passed down due to fitness of an organism; survival and reproduction.
Evolutionary psychology
A collective species nature through evolution.
All traits are _________ from an evolutionary standpoint
Good (no morality)
Sigmund Freud
Developed the psychodynamic theory
Psychodynamic theory
Battle between your conscious thoughts and feelings and your unconscious.
Psychodynamic theory - three systems
Id (basic drives); superego (conscience); and ego (reality).
Psychosexual phases
Oral, anal, phallic, and onward
Free association
Exploring the unconscience mind through relaxation.
Projective tests
Tat (make up stores about a picture) and inteblot
Freud’s theories are mostly…
Unsubstantiated (unproven).