the tendency to believe, after learning an outcome, that one would have foreseen it. Some people know it as the "I-KNEW-IT-ALL-ALONG" syndrome.
thinking that does not blindly accept arguments and conclusions. Rather, it examines assumptions, discerns hidden values, evaluates evidence, and assesses conclusions. Critical thinkers break down
an explanation using an integrated set of principles that organizes and predicts observations.
a testable prediction about something yet to be tested
precise statements of the procedures (operations) used to define independent and dependent variables.
repeating the essence of a research study, usually with different participants in different situations, to see whether the basic finding extends to other participants and circumstances
a descriptive research strategy in which one person is studied in great depth
a technique for ascertaining the self-reported attitudes or behaviors of people, usually by questioning a representative, random sample of them.
False consensus effect
is the tendency to overestimate the extent to which others share our beliefs and behaviors.
all the cases in a group, from which samples may be drawn for a study.
a sample that fairly represents a population because each member has an equal chance of inclusion. People/Items are picked randomly from the selected population.
involves observing and recording behavior in naturally occurring situations without trying to manipulate or control the situation.
a statistical measure that indicates the extent to which two factors vary together and thus how well one factor can be predicted from the other. These can be positive or negative or neither; they can help predict, but not explain results.
a depiction of the relationship between two variables by means of a graphed cluster of dots.
the false perception of a relationship between two events when none exists.
a research strategy in which a researcher directly manipulates one or more factors (independent variables) in order to observe their effect on some behavior or mental process (the dependent variables; experiments therefore make it possible to establish cause-and-effect relationships.
an inert substance or condition that is administered as a test of whether an experimental subjects who mistakenly thinks a treatment
a control procedure in which neither the experimenter nor the research subjects are aware of which condition is in effect. It is used to prevent experimenters' and subjects' expectations from influencing the results of an experiment.
experimental results caused by expectations alone; any effect on behavior caused by the administration of an inert substance or condition, which is assumed to be an active agent.
the condition of an experiment that exposes participants to the treatment, that is, to one version of the independent variable.
the condition of an experiment that contrasts with the experimental condition and serves as a comparison for evaluating the effect of the treatment.
the procedure of assigning subjects to the experimental and control conditions by chance in order to minimize preexisting differences between the groups.
the factor being manipulated and tested by the investigator.
the factor being measured by the investigator.
the most frequently occurring score in a distribution; it is the simplest measure of central tendency to determine.
the arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores.
the middle score in a distribution; half the scores are above it and half are below it.
a measure of variation computed as the difference between the highest and lowest scores in a distribution.
the average amount by which the scores in a distribution deviate around the mean. Because it is based on every score in the distribution
a statistical statement of how likely it is that an obtained result occurred by chance.
the enduring behaviors, ideas, attitudes, and traditions shared by a large group of people and transmitted from one generation to the next. Biological Psychology branch of psychology concerned with the links between biology and behavior.
a nerve cell - the basic building block of the nervous system.
the bushy branching extensions of a neuron that receive messages and conduct impulses toward the cell body.
the extension of a neuron - ending in branching terminal fibers, through which messages pass to other neurons or to muscles or glands.
a layer of fatty tissue segmentally encasing the fibers of many neurons; enables vastly greater transmission speed of neural impulses as the impulse hops from one node to the next.
a neural impulse - a brief electrical charge that travels down an axon. The action potential is generated by the movement of positively charged atoms in and out of channels in the axon's membrane
the junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron. The tiny gap is called the synaptic gap or cleft.
chemical messengers that traverse the synaptic gaps between neurons. When released by the sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether that neuron will generate a neural impulse.
(ACh) a neurotransmitter that enables learning and memory and also triggers muscle contraction.
"morphine within"--natural, opiatelike neurotransmitters linked to pain control and to pleasure.
impairment of language - usually cause by left hemisphere damage either to Broca's area or to Wernicke's area.
areas of the cerebral cortext that are not involved in primary motor or sensory functions - rather, they are involved in higher mental functions such as learning - remembering - thinking - speaking
the oldest part and central core of the brain - beginning where the spinal cord swells as it enters the skull; the brainstem is repsonsible for automatic survival functions.
the part of the brain at the back of the head that controls the activity of the muscles.
the intricate fabric of interconnected neural cells that covers the cerebral hemispheres - the body's ultimate control and information processing center.
the portion of the cerebral cortex lying just behid the forehead - involved in speaking and muscle movements and in amking plans and judgments.
glial cells-cells in the nervous system that support nourish and protect neurons.
chemical messengers released mostly by endocrine system - They travel through blood stream and affect other tissues.
means the tissue destruction - A brain lesion reffers to a naturally or experimentally damaged or removed brain.
the body's speedy electrochemical communication network consisting of all the nerve cells of the peripheral and central nervous system
the field of study encompassing the various scientific disciplines dealing with the structure development function chemistry pharmacology and pathology of the nervous system.
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.
a nerve netwrok in the brainstem that plays an important role in controlling arousal.
the area at the front of the parietal lobes that registers and processes body touch and movement sensations.
controls language reception - a brain area invloved in language comprehension and expression - usually in the left temporal lobe.
This gland is located on the kidneys, they release hormones that trigger the body to respond to emergencies and high stress
The bridge between endocrine and nervous systems and contains body's thermostat and centers for regulating hunger and thirst
This is one of usually two organs that produce ova and secrete estrogen and progesterone
This produces the hormones insulin and glucagon which control the level of glucose in the blood
Small glands in the neck that regulate calcium and phosphorous balance.
This produces hormones which regulate growth from infancy to adulthood and the amount of water in the blood
This is one of the two male reproductive glands that produce spermatozoa and secrete androgens
This produces hormones that regulate metabolism, body heat, and bone growth
a layer of fatty tissue segmentally encasing the fibers of many neurons; enables vastly greater transmission speed of neural impulses as the impulse hops from one node to the next.
central nervous system
the brain and spinal cord.
peripheral nervous system
the sensory and motor neurons that connect the central nervous system (CNS) to the rest of the body.
neural "cables" containing many axons. These bundled axons, which are part of the peripheral nervous system, connect the central nervous system with muscles, glands, and sense organs.
neurons that carry incoming information from the sense receptors to the central nervous system.
neurons that carry outgoing information from the central nervous system to the muscles and glands.
central nervous system neurons that internally communicate and intervene between the sensory inputs and motor outputs.
somatic nervous system
the division of the peripheral nervous system that controls the body's skeletal muscles. Also called the skeletal nervous system.
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.
sympathetic nervous system
the division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations.
parasympathetic nervous system
the division of the autonomic nervous system that calms the body, conserving its energy.
a simple, automatic, inborn response to a sensory stimulus, such as the knee-jerk response.
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.
the body's "slow" chemical communication system; a set of glands that secrete hormones into the bloodstream.
an amplified recording of the waves of electrical activity that sweep across the brain's surface. These waves are measured by electrodes placed on the scalp.
a visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task.
a technique that uses magnetic fields and radio waves to produce computer-generated images that distinguish among different types of soft tissue; allows us to see structures within the brain.
a technique for revealing blood flow and, therefore, brain activity by comparing successive MRI scans. MRI scans show brain anatomy; fMRI scans show brain function.
the base of the brainstem; controls heartbeat and breathing.
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.
two lima bean-sized neural clusters that are components of the limbic system and are linked to emotion.
the brain's capacity for modification, as evident in brain reorganization following damage (especially in children) and in experiments on the effects of experience on brain development.
the large band of neural fibers connecting the two brain hemispheres and carrying messages between them.
a condition in which the two hemispheres of the brain are isolated by cutting the connecting fibers (mainly those of the corpus callosum) between them.
An inherited characteristic that increases in a population because it provides a survival or reproductive advantage.
physical or verbal behavior that is intended to hurt or harm someone.
the study of the relative power and limits of genetic and enviromental influences on behavior.
renowned naturalist and thinker associated with the theory of evolution by natural selection
threadlike structures made of DNA molecules that contain the genes
sense of "we". priorities are given to a certain group. One's identity is defined accordingly
the enduring behaviors, ideas, attitudes, and traditions shared by a large group of people and transmitted from one generation to the next.
(deoxyribonucleic acid) is a complex molecule containing the genetic information that makes up the chromosomes.
refers to every nongenetic, or external, influence on our traits and behaviors.
the study of evolution of behavior and the mind, using principles of natural selection.
develop from two separate eggs fertilized by different sperrn and therefore are no more genetically similar than ordinary siblings.
the biologically and socially influenced characteristic by which people define male and female.
one's personal sense of being male or female.
a culturally prescribed set of behaviors for males and females.
gender schema theory
children acquire a cultural concept of what it means to be female or male and adjust their behavior accordingly.
the acquisition of a traditional feminine or masculine gender role.
the biochemical units of heredity that make up the chromosomes; they are segments of the DNA molecules capable of synthesizing a protein.
the complete instructions for making an organism - consisting of all the genetic material in that organism's chromosomes
the proportion of variation among individuals that we can attribute to genes. The ___________ of a trait may vary, depending on the range of populations and environments studied.
develop from a single fertilized egg that splits in two and therefore are genetically identical.
Giving priority to one's own goals over group and defining one's identity in terms of personal sttributes rather than group identification.
occurs when the effects of one factor (such as heredity) depends on another factor (such as environment).
variations in ideas, fashions, and innovations passed from one person to another that cause rapid cultural mutations.
the subfield of biology that studies the molecular structure and function of genes.
a process in which the genetic material of a person, a plant or an animal changes in structure when it is passed on to children, causing different phycical characteristics to develop.
the principle that among the range of inherited trait variations - those that lead to increased reproduction and survival will most likely be passed on to succeeding generations.
understood social prescriptions, or rules, for accepted and expected behavior.
biochemical units that make up DNA and genes.
personal space-the buffer zone we like to maintain around our bodies.
a culturally prescribed set of behaviors expected of those who occupy a particular social position.
social learning theory
people learn social behavior (such as gender roles) by observing and imitating and by being rewarded or punished.
a person's characteristic emotional reactivity and intensity.
the principal male sex hormone. During prenatal development, it stimulates the development of the external male sex organs.
the sex chromosome found in both men and women. Females have two of these chromosomes; males have one. One of these chromosome from each parent produces a female child.
the sex chromosome found only in males. When paired with an X chromosome from the mother, it produces a male child.
The smallest magnitude of a stimulus that can be detected half the time.
the process by which the eye's lens changes shape to focus near or far objects on the retina.
the sense of hearing.
One of the membranes that separate the two tubes of the cochlea and on which the organ of Corti rests.
Sensory receptor cells at the base of hairs that detect pressure.
Two visual cues that require both eyes to allow us to perceive depth.
The spot where the optic nerve attaches to the retina, which contains no rods or cones.
Bone conduction hearing
Hearing accomplished through sounds transmitted through the bones of the head directly to the cochlear fluid.
analysis that begins with the sensory receptors and works up to the brain's integration of sensory information.
The muscle in the eye that controls the shape of the lens.
A curved structure of the inner ear that is filled with fluid.
a device for converting sounds into electrical signals and stimulating the auditory nerve through electrodes threaded into the cochlea
perceiving familiar objects as having consistent color, even if changing illumination alters the wavelengths reflected by the object.
Conduction hearing loss
hearing loss caused by damage to the mechanical system that conducts sound waves to the cochlea.
The 6 million receptor cells located mostly in the center of the retina that transduce light waves into neural impulses, thereby coding information about light, dark, and color.
The protective coating on the surface of the eye through which light passes.
A gelatin-like structure containing a tuft of hairlike sensory receptor cells in the semicircular canals.
Increased sensitivity of the eye in semidarkness following an abrupt reduction in overall illumination.
Measurement of the intensity of perceived sound.
The smallest difference between two stimuli that can be detected half the time.
A thin membrane that sound waves cause to vibrate; a structure of the middle ear., the membrane in the ear that vibrates to sound
A form of energy including electricity, radio waves, and X rays, of which visible light is a part.
nerve cells in the brain that respond to specific features of the stimulus, such as shape, angle, or movement.
The central spot of the retina, which contains the greatest concentration of cones.
Free nerve endings
Sensory receptor cells in the skin that detect pressure, temperature, and pain.
the number of complete wavelengths that pass a point in a given time (for example, per second).
in hearing, the theory that the rate of nerve impulses traveling up the auditory nerve matches the frequency of a tone, thus enabling us to sense its pitch.
External auditory canal
external passage for sounds collected from the pinna to the tympanum
the theory that the spinal cord contains a neurological "gate" that blocks pain signals or allows them to pass on to the brain. The "gate" is opened by the activity of pain signals traveling up small nerve fibers and is closed by activity in larger fibers or by information coming from the brain.
The sense of taste.
Hammer - anvil - stirrup
Three linked bones of the middle ear, which pass sound waves to the inner ear.
The measurement of the frequency of sound waves in cycles per second.
the dimension of color that is determined by the wavelength of light; what we know as the color names blue, green, and so forth.
The density of vibrating air molecules, which determines the loudness of sound.
the innermost part of the ear, containing the cochlea, semicircular canals, and vestibular sacs
The colored part of the eye behind the cornea that regulates the amount of light that enters.
the system for sensing the position and movement of individual body parts.
Receptors in the muscles, joints, and skin that provide information about movement, posture, and orientation.
The transparent portion of the eye that focuses light on the retina.
Regaining sensitivity of the eye to bright light following an abrupt increase in overall illumination.
the chamber between the eardrum and cochlea containing three tiny bones (hammer, anvil, and stirrup) that concentrate the vibrations of the eardrum on the cochlea's oval window.
Eight visual cues that can be seen with one eye and that allow us to perceive depth.
Receptors for stimuli that are experienced as painful.
The sense of smell.
The sheet of receptor cells at the top of the nasal cavity.
The theory of color vision contending that the visual system has two kinds of color processors, which respond to light in either the red-green or yellow-blue ranges of wavelength.
The area in the brain where the optic nerves cross.
The nerve that carries neural messages about vision to the brain.
Organ of Corti
A sensory receptor in the cochlea that transduces sound waves into coded neural impulses.
The membrane of the inner ear that vibrates, creating sound waves in the fluid of the cochlea.
Clusters of taste buds on the tongue.
the processing of several aspects of a problem simultaneously; the brain's natural mode of information processing for many functions, including vision. Contrasts with the step-bystep (serial) processing of most computers and of conscious problem solving.
The process of organizing and interpreting information received from the outside world.
The tendency for perceptions of objects to remain relatively unchanged, in spite of changes in raw sensations.
The external part of the ear.
The experience of sound vibrations sensed as high or low.
in hearing, the theory that links the pitch we hear with the place where the cochlea's membrane is stimulated.
the activation, often unconsciously, of certain associations, thus predisposing one's perception, memory, or response.
A specialty area of psychology that studies sensory limits, sensory adaptation, and related topics.
The opening of the iris.
The area at the back of the eye on which images are formed and that contains the rods and cones.
The 125 million cells located outside the center of the retina that transduce light waves into neural impulses, thereby coding information about light and dark.
The membrane that relieves pressure from the vibrating waves in the cochlear fluid.
Fluid-filled sacs of the vestibular organ that inform the brain about the body's orientation.
Three nearly circular tubes in the vestibular organ that inform the brain about tilts of the head and body.
The process of receiving, translating, and transmitting messages from the outside world to the brain.
Organs that receive stimuli.
Sensorineural hearing loss
hearing loss caused by damage to the cochlea's receptor cells or to the auditory nerves; also called nerve deafness.
Weakened magnitude of a sensation resulting from prolonged presentation of the stimulus.
the principle that one sense may influence another, as when the smell of food influences its taste.
Sensory receptor cells
Cells in sense organs that translate messages into neural impulses that are sent to the brain.
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.
Vibratory changes in the air that carry sound.frequency of cycles*The rate of vibration of sound waves; determines pitch.
Specialized end bulbs
Sensory receptor cells that detect pressure and skin pleasure.
The theory that different odor receptors can be stimulated only by molecules of a specific size and shape that fit them like a "key" in a lock.
Any aspect of the outside world that directly influences our behavior or conscious experience.
below one's absolute threshold for conscious awareness.
Sensory receptor cells that detect pressure.
The sensory receptor cells for gustation located in the taste buds.
The characteristic quality of a sound as determined by the complexity of the sound wave.
information processing guided by higherlevel mental processes, as when we construct perceptions drawing on our experience and expectations.
The translation of energy from one form to another.
the theory of color vision contending that the eye has three different kinds of cones, each of which responds to light of one range of wavelength.
The sensory structures in the inner ear that provide the brain with information about orientation and movement.
Clearness and sharpness of vision.
The frequency of light waves, which determines the color we see.
A law stating that the amount of change in a stimulus needed to detect a difference is in direct proportion to the intensity of the original stimulus.
the sense of body movement and position, including the sense of balance.
Young-Helmholtz trichromatic theory
the theory that the retina contains three different color receptors—one most sensitive to red, one to green, one to blue—which when stimulated in combination can produce the perception of any color.
refers to changing an existing schema to incorporate new information that cannot be assimilated.In Piaget's theory.
this refers to the life stage from puberty to independent adulthood, denoted physically by a growth spurt and maturation of primary and secondary sex characteristics, cognitively by the onset of formal operational thought, and socially by the formation of identity.
a progressive and irreversible brain disorder characterized by gradual deterioration of memory, reasoning, language, and finally, phisical funtioning.
refers to interpreting a new experience in terms of an existing schema.In Piaget's theory.
an emotional tie with another person, shown in young children by their seeking closeness to a caregiver and showing distress on separation.
according to Erikson is a sense that the world is predictable and trustworthy - a concept that infants form if their needs are met by responsive caregiving.
all the mental activities associated with thinking, knowing, remembering, and communicating.
concrete operational stage
the stage lasting from about ages 6 or 7 to 11, children can think logically about concrete events and objects.
the principle that properties such as number, volume, and mass remain constant despite changes in the forms of objects; it is acquired during the concrete operational stage.
the limited time shortly after birth during which an organism must be exposed to certain experiences or influences if it is to develop properly.
in this study people of different ages are compared with one another.
one's accumulated acknowledge and verbal skills; tends fo increase with age
refers to those aspects of intellectual ability, such as vocabulary and general knowledged that reflect accumulated learning. Crystallized intelligence tends to increase with age.
a branch of psychology that studies human development in phsical, cognitive, and social change perspectives.
in Piaget's theory refers to the difficulty that preoperational children have in considing another's viewpoint. "Ego" means "self" erring and "centrism" indicates "in the center"; the preoperational child is "self-centered."
the developing prenatal organism from about 2 weeks through 2 months after conception.
fetal alcohol syndrome
a syndrome that refers to the physical and cognitive abnormalities that heavy drinking by a pregnant woman may cause in the developing child.
the developing human organism from 9 weeks after conception to birth.
refers to a person's ability to reason speedily and abstractly. Fluid intelligence tends to decline with age.
formal operational stage
in Piaget's theory normally begins about age 12. During this stage people begin to think logically about abstract concepts.
decreasing responsiveness with repeated stimulation. As infants gain familiarity with repearted exposure to a visual stimulus, their interest wanes and they look away sooner.
one's sense of self; according to Erikson, the adolescent's task is to solidify a sense of self by testing and integrating various roles.
the process by which certain animals form attachments early in life, usually during a limited critical period.
in Erikson's theory, the ability to form close, loving relationships; a primary developmental task in late adolescence and early adulthood.
in this study the same people are tested and retested over a period of years.
biological growth processes that enable orderly changes in behavior, relatively uninfluenced by experience.
the first menstrual period.
the time of natural cessation of menstruation; also refers to the biological changes a woman experiences as her ability to reproduce declines.
the awareness that things continue to exist even when not perceived.
in Piaget's theory lasts from about 2 to 6 or 7 years of age. During this stage, language development is rapid, but the child is unable to understand the mental operations of concrete logic.
primary sex characteristics
the body structures (ovaries, testes, and external genitalia) that enable reproduction.
the early adolescent period of sexual maturation, during which a person becomes capable of reproduction.
a baby's tendency, when touched on the cheek, to turn toward the touch, open the mouth, and search for the nipple.
are mental concepts that organize and interpret information. They are found in Piaget's theory of cognitive development
secondary sex characteristics
the nonreproductive sexual characteristics, for example,female breasts, male voice quality, and body hair.
a person's sense of identity and personal worth.
in Piaget's theory of cognitive stages, this stage lasts from birth to about age 2.During this stage, infants gain knowledge of the world through their senses and their motor activities.
the cultural preferred timing of social event such as marriage, parenthood, and retirement.
the fear of strangers that infants begin to display at about 8 months of age.
agents, such as chemicals and viruses, that can reach the embryo or fetus during prenatal development and cause harm.
the fertilized egg; it enters a 2-week period of rapid cell division and develops into an embryo
theory of mind
people's ideas about their own and others' mental states—about their feelings, perceptions, and thoughts and the behavior these might predict.
a disorder that appears in childhood and is marked by deficient communication, social interaction, and understanding of others' states of mind.
depth cues, such as retinal disparity and convergence, that depend on the use of two eyes.
a binocular cue for perceiving depth; the extent to which the eyes converge inward when looking at an object. the greater the inward strain, the closer the object.
the ability to see objects in three dimensions although the images that strike the retina are two-dimensional; allows us to judge distance.
the controversial claim that perception can occur apart from sensory input. Said to include telepathy, clairvoyance, and precognition.
the organization of the visual field into objects (the figures) that stand out from their surroundings (the ground).
an organized whole. Gestalt psychologists emphasized our tendency to integrate pieces of information into meaningful wholes.
the perceptual tendency to organize stimuli into coherent groups.
Human Factors Psychology
a branch of psychology that explores how people and machines interact and how machines and physical environments can be made safe and easy to use.
failing to see visible objects when our attention is directed elsewhere.
depth cues, such as interposition and linear perspective, available to either eye alone.
the study of paranormal phenomena, including ESP and psychokinesis.
in vision, the ability to adjust to an artificially displaced or even inverted visual field.
perceiving objects as unchanging (having consistent lightness, color, shape, and size) even as illumination and retinal images change.
a mental predisposition to perceive one thing and not another.
an illusion of movement created when two or more adjacent lights blink on and off in quick succession.
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 closer the object.
the focusing of conscious awareness on a particular stimulus, as in the cocktail party effect.
the tendency for vision to dominate the other senses.
a laboratory device for testing depth perception in infants and young animals.