AP Psych Final Review Flashcards
Action potential
A neural impulse; a brief electric charge that travels down an axon. Generated by the movement of positively charged atoms in and out of channels in the axon membrane.
Aggression
Any physical or verbal behavior intended to hurt or destroy.
Anxiety disorder
Psychological disorders characterized by distressing, persistent anxiety or maladaptive behaviors that reduce anxiety.
Absolute threshold
Minimum stimulation need to detect a particular stimulus 50% of the time.
Anxiety
An unpleasant emotional state
Biological
Focuses on the relationship between the body and the mind
Cognition
Conceded with memory, perception, thought, and other mental processes
Behavioral
Concerned mainly with a person’s observable responses to stimuli
Humanistic
Focuses on a person’s capacity for self fulfillment and growth
Psychodynamic
Concerned with the influence of unconscious desires and motives
Hypotheses
Testable explanations of observed events
Reliability
The study produced consistent results when replicated
Validity
The study accurately measures what it claims to measure. 3 types.
Construct
Internal
External
Construct validity
The study measures the effect that it is trying to measure
Internal validity
The study shows the only experimental factor caused an effect
External validity
The study results apply to other situations
Correlational study
Expresses the relationship between two variables; does not imply causation
Experiment
Manipulation of an independent variable in order to understand its effect on a dependent variable. Identifies cause and effect relationships
Sampling
The process of choosing subjects to study
Sample
A group of subjects selected to study; subset of a population
Population
A group of people about whom the researcher wants to make conclusions.
Random assignment
Random placement of subjects into experimental or control groups
Control group
A group not subject to experimental manipulation
Variables
Things that can vary amount subjects
Independent
Dependent
Confounding
Independent variable
Manipulated by researcher; produces change in dependent variable
Dependent variable
Measured by the researcher
Confounding variable
Any possible variable (other than the independent variable) that may cause the observes effect
Statistical analysis
Desecibes dats and quantifies relationships between variables
Frequency distribution
An arrangement of data points on how frequent they occur
Normal and central tendency
Normal distribution
A frequency distribution with a symmetrical bell-shaped curve
Central tendency
Measures of the center of the frequency distribution.
Three types:
Mean
Median
Mode
Mean
Arithmetic average of data set
Median
Middle data point
Mode
Most frequent data point
Variability
How the data are dispersed or spread around the mean
Range
Standard deviation
Range
The distance between the highest and lowest data point
Standard deviation
The average distance of a data point from the mean. Small: scores are relatively close to the mean score. Large: scores have a wider range
Statistical significance
Means that the did fences observed are too high to have occurred by chance
Type 1 error
False positive; perceives an effect is not there
Type 11 error
False negative; fails to perceive an effect that is there
Nervous system
Receives and transmits information
CNS
Consists of the brains spinal cord wand brain
Contralateral control
Each hemisphere of the brain controls opposite sides of the body
Lateralization
Left and right hemispheres have different functions
Hindbrain
Top part of the spinal cord; includes the medulla, pons, and cerebellum
Medulla
Controls basic biological functions: breathing, swallowing, and balance
Pons
Controls facial expressions, sleep and dreaming
Cerebellum
Controls fine motor movement
Midbrain
Coordinates basic movements with sensory information
Forebrain
Large in humans; includes the cerebral cortex and sy cortical structures such as thalamus, hypothalamus, and basal ganglia
Basal ganglia
Regulates muscle contractions/movements
Thalamus
Incorporates and relays sensory information to the cortext
Hypothalamus
Controls motivated behavior: eating, drinking, and sex
Hippocampus
Helps process and receive long-term and spatial memory
Amygdala
Controls emotion and evaluation of stimuli
Cerebral cortext
Receives sensory information and transmits motor information
Corpus callosum
Nerve tract beneath the cortex the connects the two the two hemispheres and allow them to communicate
Occipital lobe
Processes Vision
Temporal lobe
Processes sound
Parietal lobe
Integrates sensory systems; is involves in attentions
Frontal lobe
Controls speech, learning, thinking, decision-making, and abstract thoughts
Peripheral nervous system
Includes all the members that spread through the body from the brain and the spinal cord
Somatic division
Autonomic division
Somatic division
Controls voluntary muscle movements and sense organs
Autonomic division
Controls involuntary actions and internal organs
Two parts:
Sympathetic
Parasympathetic
Sympathetic nervous system
Gets the body ready for emergency actions
Parasympathetic nervous system
Becomes active during states of relaxations
Neurons
Nerve cells, are basic unit of the nervous system. Each neuron has three main parts:
Soma
Dendrite
Axon
Soma
Cell body; stores energy for the cell
Dendrite
Receives messages from other neurons and conducts the messages toward the soma
Axon
Sends messages to other neurons
Terminal branches (axon terminals)
The end of the axon that contains neurotranmitters
Myelin sheath
insulates axons so signals can travel quickly
Glial Cell
Creates myelin, suppports and guides neurons, and help repair neurons
Synapse
the small gap between neurons where information is exchanged
synaptic vesicles
Places where neurotransmitters are stored until releases into the synapse
Neurotransmiitters
chemicals that stimulate neurons so they can communicate
Excitatory
Make neurons more likely to fire
Inhibitory
Make neurons less likely to fire
Excitation Threshold
the voltage difference (-55 millivolts) necessary to destabilize a neuron, causing an action potential to occur
Action potential (nerve impulse)
the brief charge in electrical charge that destabilizes a neuron. The action potential stimulates the axon terminals, restarting the process.
Endocrine system
Made up of hormone-secreting glands, affects communication inside the body
Hormones
Chemicals that help regulate bodily functions
Cornea
Protective covering where light first enters the eye
Lens
Bends or refracts light rays; focuses a flipped, inverted image into the retina
Retina
Thin structure at back of eye that contains two types of receptor cells: Cones and rods
Rods
Cells in the periphery of the retina that respond to black and white. Better in low light, more sensitive to motion, and have less visual acuity.
Cones
Centered in the fovea. Respond to color, good for daytime vision, more visual acuity.
Optic Nerve
Carries visual information to the lateral geniculate nucleus of the thalamus