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Functional relation:
When the value of the DV changes in an orderly fashion as a function of
the IV.
Direct replication:
Repetition of an experimental method exactly as it was originally designed
and executed.
Systematic replication:
Repetition of an experimental method under circumstances that differ
from the original experiment. [For example, conditions might be imposed in a different order; the
range of an independent variable might be extended, or the kind of organism might be changed.]
Parametric replication:
Repeat the experiment with changing one variable across a range of
values.
Control system theory:
a branch of science that deals with goal-directed behaviors in both
living creatures and inanimate objects.
Reflex:
a stereotyped pattern of movement of a part of the body that can be reliably elicited by
presenting the appropriate stimulus.
Spinal reflex arc:
a neural pathway that allows the body to automatically respond to a stimulus
without involving the brain.
Tropism:
is a movement or change in orientation of the entire animal.
Kinesis:
a type of movement in which an organism’s response is related to the intensity of the
stimulation but is not oriented in any spatial direction (direction of movement is random in
relation to a stimulus).
Taxis:
active movement of motile organisms in response to a stimulus (direction of movement
bears some relationship to the location of the stimulus).
Fixed Action Patterns:
a stereotyped, genetically preprogrammed, species-specific behavioral
sequence that is evoked by a releaser stimulus.
Sign stimulus:
a stimulus that, when presented under the proper conditions, initiates a fixed
action pattern.
Reaction chain:
Whereas fixed action patterns continue until completion once started, in a
reaction chain the progression from one behavior to the next depends on the presence of the
appropriate
stimulus.
Habituation:
defined as a decrease in the strength of a response after repeated presentation of a
stimulus that elicits the response
Orienting response:
a behavioral response to an altered, novel, or sudden stimulus, such as
turning one’s head toward an unexpected noise
Simple system approach:
The "simple systems approach" refers to a research strategy where
scientists study primitive or simpler organisms with less complex nervous systems to investigate
fundamental biological processes.
Positron emission tomography (PET) scan:
an imaging technique using radiolabeled tracers,
such as 2-deoxyglucose labeled with fluorine-18, that emit positively charged particles
(positrons) as they are metabolized. Used to evaluate cerebral metabolism and blood flow as well
as the binding and transport of neurotransmitter systems in the brain, PET enables documentation
of functional changes that occur during the performance of mental activities
Functional magnetic resonance imaging (fMRI) scan:
a noninvasive brain imaging technique
that measures brain activity by tracking changes in blood oxygenation and flow.
Opponent-process theory:
a theory that a stimulus or event simultaneously arouses a primary
affective state, which may be pleasurable or aversive, and an opponent (opposite) affective state,
which serves to reduce the intensity of the primary state: These two states together constitute
emotional experience.
a-process:
represents the primary emotional or physiological response to a stimulus.
b-process:
a secondary, opposing response that counteracts the A-process over time.
tolerance:
a condition, resulting from persistent use of a drug, characterized by a markedly
diminished effect with regular use of the same dose of the drug or by a need to increase the dose
markedly over time to achieve the same desired effect
Classical conditioning:
The modification of respondent behavior by stimulus-stimulus
contingencies, so that a previously neutral stimulus comes to elicit a response.
Unconditioned stimulus (US):
a stimulus that elicits an unconditioned response.
Unconditioned response (UR):
the unlearned response to a stimulus.
Conditioned stimulus (CS):
a neutral stimulus that is repeatedly associated (see pairing) with an
unconditioned stimulus until it acquires the ability to elicit a response that it previously did not.
Conditioned response (CR):
in classical conditioning, the learned or acquired response to a
conditioned stimulus
Conditioned suppression:
a phenomenon that occurs during an operant performance test when a
conditioned response to a positive stimulus is reduced by another stimulus that is associated with
an aversive stimulus.
Skin conductance response (SCR):
a physiological response that measures how the skin's
electrical conductivity increases when the body is aroused by a stimulus.
Stimulus substitution theory:
a theory of classical conditioning that states that a conditioned
stimulus (CS) can replace an unconditioned stimulus (US) to trigger the same response
Conditioned compensatory responses:
an automatic response that is opposite to the effect of
alcohol or substance usage.
Sign-tracking theory:
Sign tracking describes the propensity of individuals to engage with a
conditioned stimulus (CS) that has been paired with a rewarding unconditioned stimulus (US),
even when the location of the eventual reward is not colocalized with the CS
Acquisition phase:
the initial stage of learning, when a response is first established and
gradually strengthened.
Extinction:
the decrease or disappearance of the conditioned response when the unconditioned
stimulus is no longer presented with the conditioned stimuli.
Spontaneous recovery:
the reappearance of a Conditioned Response (CR) that has been
extinguished.
Disinhibition:
the reappearance of a conditioned response once the response has been made
extinct.
Rapid reacquisition:
occurs when a conditioned response returns after extinction, and the
conditioned stimulus (CS) and unconditioned stimulus (US) are paired again
Excitatory CS:
occurs when a conditioned stimulus (CS) has a positive relationship with the
unconditioned stimulus (US).
Inhibitory CS (aka Conditioned inhibitor):
prevents the occurrence of a CR or reduces the
size of the CR from what it would otherwise be.
Compound CS:
The simultaneous presentation of two or more CSs
Generalization:
the spread of effects of conditioning to stimuli that differ in certain aspects from
the stimulus present during original conditioning.
Generalization gradient:
a graph marking the similarity or difference between two stimuli
versus the similarity or difference in their elicited responses.
Discrimination:
the ability to differentiate between a conditioned stimulus and other stimuli that
have not been paired with an unconditioned stimulus
Short-delay conditioning:
Consider the unconditioned reflex whereby food elicits (US) elicits
salivation (UR). In Short Delay Conditioning, a tone (NS) might sound immediately before the
food (US) is presented. Consequently, the tone (CS) may come to elicit salivation (CR) even in
the absence of food.
Simultaneous conditioning:
Consider the unconditioned reflex whereby food elicits (US) elicits
salivation (UR). In Simultaneous Conditioning, a tone (NS) might sound at the same time that
food (US) is presented.
Trace conditioning:
Consider the unconditioned reflex whereby food elicits (US) elicits
salivation (UR). In Trace Conditioning, a tone (NS) might briefly sound several seconds before
the food (US) is presented. The tone does not sound during the intervening interval.
Consequently, the tone (CS) may come to elicit salivation (CR) even in the absence of food.
With repeated conditioning trials, salivation may become increasingly delayed to the tone,
occurring progressively closer in the time to food delivery. The eliciting effect of the tone may
be less pronounced the longer the typical intervening interval between it and the food
presentation.
Long-delay conditioning:
Consider the unconditioned reflex whereby food elicits (US) elicits
salivation (UR). In Long Delay Conditioning, a tone (NS) might sound for several seconds
before the food (US) is presented. Consequently, the tone (CS) may come to elicit salivation
(CR) even in the absence of food. With repeated conditioning trials, salivation may become
increasingly delayed to when tone first sounds, occurring progressively closer in the time to food
delivery. In addition, the eliciting effect of the tone may be less pronounced the longer its typical
duration prior to food delivery
Backward conditioning:
Consider the unconditioned reflex whereby an electric shock to the
foot elicits (US) elicits foot withdrawal (UR). In Backward Conditioning, a tone (NS) might sound after the foot shock (US) is delivered. Consequently, the tone (CS) may come to elicit foot
withdrawal (CR) even in the absence of foot shock. However, should this effect be observed, it is
likely to be smaller than had the tone sounded before the foot shock.
Temporal coding hypothesis:
Consider the unconditioned reflex whereby food elicits (US)
elicits salivation (UR). In Temporal Conditioning, food (US) would be presented at regular
intervals (e.g., once every minute). Consequently, salivation may occur just prior to food
delivery; this effect is observed in the absence of any identifiable stimulus paired with the food
other than the constant inter-food interval.
Second-order conditioning:
a neutral stimulus is associated with another stimulus that has
already been linked to an unconditioned stimulus (US).
Evaluative conditioning:
Evaluative conditioning is defined as a change in the valence of a
stimulus that is due to the pairing of that stimulus with another positive or negative stimulus. The
first stimulus is often referred to as the conditioned stimulus and the second stimulus as the
unconditioned stimulus. A conditioned stimulus becomes more positive when it has been paired
with a positive unconditioned stimulus and more negative when it has been paired with a
negative unconditioned stimulus. Evaluative conditioning thus refers to attitude formation or
change toward an object due to that object's mere co-occurrence with another object.
Systematic desensitization:
a form of behavior therapy in which counterconditioning is used to
reduce anxiety associated with a particular stimulus.
Aversive counterconditioning:
aims to replace a positive response to a harmful stimulus with a
negative response.
Blocking:
In classical conditioning, the finding that there is little or no conditioning to a stimulus
if it is presented along with a previously conditioned stimulus on conditioning trials
Overshadowing:
In classical conditioning, the finding that there is less conditioning to
a weak conditioned stimulus if it is presented along with a more intense conditioned stimulus.
Overexpectation effect:
A decrease in the strength of responding to two conditioned stimuli that
have been trained separately that occurs if they are presented as a compound CS and followed by
the usual unconditioned stimulus.
CS preexposure effect:
The finding that classical conditioning proceeds more slowly if the
conditioned stimulus is repeatedly presented by itself before it is paired with the unconditioned
stimulus.
Comparator theories:
A theory of classical conditioning that states that the strength of a
conditioned response depends on a comparison of the likelihood of an unconditioned stimulus in
the presence of the conditioned stimulus versus its absence
Contextual stimuli:
The sights, sounds, and smells of a creature’s environment.
Attribute conditioning:
A type of classical conditioning in which the attributes or
characteristics of one stimulus are transferred to another stimulus
Cerebellum:
A part of the brain, located in the back of the head beneath the cerebral cortex, that
is important for many skilled movements.
Cue exposure treatment:
In the treatment of drug addictions, exposing the individual to stimuli
that are normally associated with the drug, so that conditioned drug cravings can be
extinguished.
Tolerance:
A decrease in the effects of a drug that is observed after repeated use of the drug.
Equipotentiality premise:
The hypothesis that a stimulus or response that is difficult to
condition in one context should also be difficult to condition in all other contexts.
Prepared associations:
An association between stimuli, or between stimuli and responses, in
which members of a particular species have an innate tendency to learn quickly and easily.
Conditioned opponent theory:
A theory of classical conditioning that states that the later
portions of an unconditioned response (which are often opposite in form to the early portions)
become associated with the conditioned stimulus. The theory accounts for conditioned responses
that appear to be the opposite of the unconditioned response.
Sometimes opponent process (SOP):
A general theory of classical conditioning, developed by
Allan Wagner, which speculates about why some conditioned responses are similar in form and
others are opposite in form to the unconditioned response.