Intro to Psychology CLEP

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126 Terms

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Wilhelm Wundt

german physiologist who founded psychology as a formal science; opened first psychology research laboratory in 1879

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Structuralists

Believed that consciousness was made up of basic elements that were combined to produce diffferent perceptions

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Introspection

a method of self-observation in which participants report their thoughts and feelings

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Edward Titchener

Student of Wilhelm Wundt; founder of Structuralist school of psychology; set up first psychology lab in U.S.

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Functionalists

studied the function of consciousness

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William James

1842-1910; Field: functionalism; Contributions: studied how humans use perception to function in our environment; Studies: Pragmatism, The Meaning of Truth

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Biological Approach

A psychological perspective that examines behavior and mental processes through a focus on the body, especially the brain and nervous system.

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Psychodynamic Approach

Approach that states that behavior reflects unconscious internal conflict between inherited instincts and society's behavioral rules. **Sigmund Freud

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Behaviorist Approach

A theoretical perspective that focuses only on objective, observable reactions. Behaviorism emphasizes the environmental stimuli that determines behavior.

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Classical Conditioning

a learning procedure in which associations are made between a natural stimulus and a learned, neutral stimulus

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Operant Conditioning

a type of learning in which behavior is strengthened if followed by a reinforcer or diminished if followed by a punisher

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Cognitive Approach

According to this approach, behavior is a result of information processing, such as perception, memory, thought, judgment, and decision making

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Humanistic Approach

approach to psychology that sees humans as basically good and striving to reach their ideal self

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Self-actualization

self fulfillment the realization of all ones potential and desire to become creative in the full sense if the world.

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Experiments

a means for researchers to assess cause-and-effect relationships between at least two variables.

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Independent Variable

The experimental factor, "cause", that is manipulated; the variable whose effect is being studied.

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Experimental Group

Exposed to presumed "cause"

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Control Group

the group that does not receive the experimental treatment.

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Dependent Variable

the "effect" of an experiment; will usually involve measuring how subjects behave.

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Random Subject assignment

Is done to ensure that the average behavior of the two groups would be the same PRIOR to manipulation.

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Placebo Effect

experimental results caused by expectations alone; any effect on behavior caused by the administration of an inert substance or condition, which the recipient assumes is an active agent

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Blind Study

participants are not told whether they're in the control or experiment group

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Double-blind study

Research method in which both the subjects and the experimenter are unaware to the anticipated results.

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Correlational Studies

research method that examines relationships between variables in order to analyze trends in data, test predictions, etc. (they do NOT discern cause and effect relationships)

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Positive Relationship

A relationship in which the values of one variable increase (or decrease) as the values of another variable increase (or decrease)

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Negative Relationship

when an increase in one variable is associated with a decrease in the other variable

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Correlation Coefficient

A numerical index of the degree of relationship between two variables, a positive number near 1.0 indicates two variables are positively related; a negative number indicates a negative relationship; zero indicates no relationship

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Surveys

Questionnaires and interviews that ask people directly about their experiences, attitudes, or opinions.

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Case Study

In-depth study analysis of only one person

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Naturalistic Observation

observing and recording behavior in naturally occurring situations without trying to manipulate and control the situation

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inter-rater reliability

the degree of agreement between co-observers watching the same set of events

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Behavioral Neuroscience

an approach to psychology that links psychological processes to activities in the nervous system and other bodily processes

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Nervous System

The body system of nervous tissues--organized into the brain,spinal courd, and nerves--that send and receive messages and integreate the body's activities.

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Sense Receptors

Detect heat, light, or touch and then pass information about those stimuli on to the brain, thereby triggering thoughts about those things and/or causing behavioral responses to occur

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Neurons

individual cells that are the smallest units of the nervous system; the long, thin cells of nerve tissue along which messages travel to and from the brain

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Sensory (or afferent) Neurons

neurons that carry incoming information from the sense receptors to the central nervous system

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Motor (or efferent) Neurons

neurons that carry outgoing information from the central nervous system to the muscles and glands

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Interneurons (or association Neurons)

Central nervous system neurons that internally communicate and intervene between the sensory inputs and motor outputs

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Cell Body

contains the nucleus, where most of the molecules the neuron needs to survive and function is manufactured

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Dendrites

short fibers that branch out from the cell body and pick up incoming messages

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Axons

a part of a neuron that carries impulses away from the cell body

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Myelin Sheath

a layer of fatty tissue encasing a neuron's axon that speeds transmission

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Action Potential

a neural impulse; a brief electrical charge that travels down an axon

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Ions

positively and negatively charged atoms

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Resting potential

when a neuron is in polarization; more negative ions are inside the neuron cell membrane with a positive ions on the outside, causing a small electrical charge; release of this charge generates a neuron's impulse (signal/message)

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Refractory Period

resting time; occurs in both neuron firing and in human sexual response

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Synapse

the junction between two neurons (axon-to-dendrite) or between a neuron and a muscle

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Synaptic Gap

The tiny gap at the junction between the sending neuron and the dendrite or cell body of the receiving neuron

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Neurotransmitters

chemical messengers that traverse the synaptic gaps between neurons

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Vesicles

small membrane sacs that specialize in moving products into, out of, and within a cell

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Axon Terminal

the endpoint of a neuron where neurotransmitters are stored

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Serotonin

a neurotransmitter that affects hunger,sleep,arousal,and mood. appears in lower than normal levels in depressed persons

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Agonists

drugs which mimic or increase the activity of neurotransmitters

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Antagonists

drugs that block the function of a neurotransmitter

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Central Nervous System

consists of the brain and spinal cord

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Peripheral Nervous System

the sensory and motor neurons that connect the central nervous system to the rest of the body

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Somatic Nervous System

the division of the peripheral nervous system that connects the central nervous system with sensory receptors, muscles, and the skin

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Autonomic Nervous System

The part of the peripheral nervous system that controls the glands and the muscles of the internal organs (such as the heart). Its sympathetic division arouses; its parasympathetic division calms.

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Sympathetic Nervous System

the division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations

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Parasympathetic Nervous System

the division of the autonomic nervous system that calms the body, conserving its energy

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Neural Networks

interconnected neural cells. With experience, networks can learn, as feedback strengthens or inhibits connections that produce certain results. Computer simulations of neural networks show analogous learning.

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Brainstem

The oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull; the brainstem is responsible for automatic survival functions

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Thalamus

the brain's sensory switchboard, located on top of the brainstem; it directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla

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Reticular Formation

a nerve network in the brainstem that plays an important role in controlling arousal

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Cerebellum

the "little brain" attached to the rear of the brainstem; it helps coordinate voluntary movement and balance

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Limbic System

a doughnut-shaped system of neural structures at the border of the brainstem and cerebral hemispheres; associated with emotions such as fear and aggression and drives such as those for food and sex. Includes the hippocampus, amygdala, and hypothalamus.

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Hippocamus

a brain structure in the limbic system that is involved in forming and indexing memories

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Amygdala

limbic system component associated with emotion, particularly fear and anger

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Hypothalamus

limbic system component that regulates hunger, body temperature and other functions

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Pituitary Gland

gland in the base of the skull that secretes nine hormones that directly regulate many body functions and control the actions of several other endocrine glands

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Hormones

chemical messengers, mostly those manufactured by the endocrine glands, that are produced in one tissue and affect another

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Endoctrine System

system in the body that sends messages to the bodily organs via hormones

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Cerebral Cortex

the intricate fabric of interconnected neural cells that covers the cerebral hemispheres; the body's ultimate control and information-processing center

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Frontal Lobes

the portion of the cerebral cortex lying just behind the forehead; involved in speaking and muscle movements and in making plans and judgments

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Broca's area

controls language expression-an aread of the frontal, usually in the left hemisphere, that directs the muscle movements involved in speech

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Wernicke's area

controls language reception-a brain area involved in language comprehension and expression;usually in the left temporal lobe

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Parietal Lobes

the portion of the cerebral cortex lying at the top of the head and toward the rear; receives sensory input for touch and body position

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Temporal Lobes

the portion of the cerebral cortex lying roughly above the ears; includes the auditory areas, each of which receives auditory information primarily from the opposite ear

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Occipital Lobes

the portion of the cerebral cortex lying at the back of the head; includes the visual areas, which receive visual information from the opposite visual field

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Psychophysics

the study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them

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Signal Detection Theory

a theory predicting how and when we detect the presence of a faint stimulus ("signal") amid background stimulation ("noise"). Assumes there is no single absolute threshold and detection depends partly on a person's experience, expectations, motivation, and level of fatigue. (Myers Psychology 8e p. 199)

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Absolute Threshold

the minimum stimulation needed to detect a particular stimulus 50 percent of the time

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Difference Threshold

also called the jnd; smallest distinction between two stimuli that can consistently be detected

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Weber's Law

the principle that for any change in a stimulus to be detected, a constant proportion of that stimulus must be added or subtracted

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Sensory Adaptation

Diminished sensitivity as a consequence of constant stimulation.

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Feature Detectors

nerve cells in the brain that respond to specific features of the stimulus, such as shape, angle, or movement

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Gestalt

an organized whole. Gestalt psychologists emphasized our tendency to integrate pieces of information into meaningful wholes

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Binocular Cues

depth cues, such as retinal disparity and convergence, that depend on the use of two eyes

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Retinal Disparity

a binocular cue for perceiving depth; by comparing images from the two eyeballs, the brain computes distance - the greater the disparity (difference) between the two images, the close the object

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Convergence

a binocular cue for perceiving depth; the extent to which the eyes converge inward when looking at an object

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Monocular Cues

depth cues, such as interposition and linear perspective, available to either eye alone

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Linear Perspective

a monocular cue for perceiving depth; the more parallel lines converge, the greater their perceived distance

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Motion Parallax

cue to depth that involves images of objects at different distances moving across the retina at different rates

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Interposition

monocular visual cue in which two objects are in the same line of vision and one patially conceals the other, indicating that the first object concealed is further away

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Texture Gradients

The gradual diminishing of detail that occurs in surfaces as they recede into the distance, compared with objects in the visual field that are close and seen in fine detail

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Sensory Restriction

includes loss of a sense such as sight, resulting in increase perception in other senses

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Critical Period

an optimal period shortly after birth when an organism's exposure to certain stimuli or experiences produces proper development

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Perceptual Sets

Demonstrates our readiness to percieve in a particular manner; Based on experience and expectation

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Bottom-up

refers to visual processing in which experience does not influence perception

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Top-down

refers to processing in which our experience and expectations influence our perceptions