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PSYC 3225, Exam 1 Study Guide

by: Rosemarie Pacitto

PSYC 3225, Exam 1 Study Guide PSYC 3225

Marketplace > East Carolina University > Psychlogy > PSYC 3225 > PSYC 3225 Exam 1 Study Guide
Rosemarie Pacitto
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This study guide covers the material expected to be on the next Exam. After reading all chapters as well as the power-points provided, I synthesized this study guide to best prepare for the first e...
Psychology of Learning
Dr. Poteat
Study Guide
Psychology, psychologyoflearning, psyc3225
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This 12 page Study Guide was uploaded by Rosemarie Pacitto on Sunday February 21, 2016. The Study Guide belongs to PSYC 3225 at East Carolina University taught by Dr. Poteat in Winter 2016. Since its upload, it has received 840 views. For similar materials see Psychology of Learning in Psychlogy at East Carolina University.


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Date Created: 02/21/16
Basics!!! (if you are constantly confused between the 2, I feel I can put it in a way that’s easy to understand) “The definitions” Independent variable= the variable the experimenter determines independent of the subjects control Dependent variable= the variable generated by the subject that the experimenter measures. ^^ This definition is more complicated than it needs to be, in simpler terms: the INDEPENDENT variable affects the DEPENDANT variable For example: Amount of Studying done (independent variable) will affect your exam grade (dependent variable) intervening variable is a hypothetical concept that attempts to explain relationships between variables, and especially the relationships between independent variable and dependent variables. Placebo and sham treatment are methods used in medical trials to help researchers determine the effectiveness of a drug or treatment. Placebos are inactive substances used to compare results with active substances. And in sham treatments, the doctor goes through the motions without actually performing the treatment. Operational Definition= An operational definition is how we (the researcher) decide to measure out the variables in our study (variable = anything that can be measured). Naturalistic Observation: Means we are observing organisms (humans or animals) in their natural (or semi-natural) environment Preparedness=(as a term used in learning) just means that it is easier to teach certain behaviors and relationships to a given species than other behaviors or relationships. It is easy to teach a pigeon to peck at a button but harder to teach the pigeon to use a leg to press a lever. Learning= the feature by which we can alter our skills, change our dispositions, and add to our knowledge, and generally benefit or suffer from experience resulting in a relatively permanent change. • Learning is a result of experience and not due to physical changes such as maturation or the ingestion of drugs. Those events may change your behavior but do not constitute learning • Behavior changes due to learning must be relatively enduring and due to interaction with the environment • Demonstrated by performance Categories of Learning – I will discuss these in depth within the study guide! • Adaptation to the environment (habituation and sensitization • Classical Conditioning (Also known as pavlovian conditioning, respondent conditioning, s-s learning) • Instrumental or Operant Conditioning (also known as S-R Learning) Man, The machine and the role of ‘mind’ • Proposed that the body operates mechanically via reflex actions, similar to machinery • Reflexes activated by stimuli in the environment • A reflex connects a stimulus (S) with a response (R) Hedonism= all human thought is governed by seeking pleasure and avoiding pain Morgan’s Canon=behavior should not be explained by a complex process if a simpler one works. Memory= the expression of learning, revealed in alterations of our performance across a broad range of daily activities. Anterograde amnesia= losing the capacity to form new lasting memories. Retrograde amnesia= losing memories prior to brain damage. Long term memory divided into explicit and implicit memory= Basically Explicit Memory or Declarative Memory refers to things you can verbal express. Knowing you address is an example of Explicit Memory. Implicit Memory refers to memory that does not require the ability to express what you know. An example, would feeling fear when you see a stimulus that has been used to condition a fear response using shock. (Implicit memories may be capable of being verbally expressed but verbal expression is not necessary. Explicit and declarative memory (cognitive memory)= memories can be consciously recalled. Implicit memory (behavioral memory)= memories are expressed through changes in behavior, typically the speed with which we execute a behavior or change our preferences and aversions without conscious recollection. Implicit (Behavioral) Memory Explicit (Cognitive)Memory Simple forms Working Memory Habituation Sensitization Perceptual Learning Episodic Memory Procedural Learning Semantic Memory Emotional Memory Subtypes of Implicit (behavioral) memory Perceptual learning and memory= non- associative form of learning that is the improvement in perception of categories of stimuli that we are required to discriminate. Procedural learning= the acquisition of reflexive behaviors and habits (learning how to drive a car) Emotional memory= the acquisition of attractions and aversions to otherwise neutral stimuli, Subtypes of Explicit (cognitive) memory working memory= involves information we keep in mind by active rehearsal or manipulation. Episodic memory= provides permanent record of personal experience. Semantic memory= we use to permanently organize factual information. The Nervous System -composed of cells -Inside nerve cells are a high concentration of potassium ions, while outside the cell there is a high concentration of sodium ions. -Neurons most important part of nervous system (glial cells provide support for neurons) Synapse= where signals travel between neurons (cells that are the basic elements of information processing) via chemical transmission from an axon of one neuron to the dendrites or cell body of the next. AKA Information is transmitted from cell to cell across synapses Dendrites= extensions of the membrane that receive information from other neurons Dendrites have a branched arborization pattern to facilitate contacts with other neurons. (Hint: think of tree branches.) Axon= sends information to other neurons Synaptic Potential= signals carried within synapses and dendrites that are relatively small and variable in size, decrease as they travel along the dendrites toward the cell body. The neuron cell bodies add together the small and varying synaptic potentials. If they reach a particular threshold at the origin of the axon, the cell fires and generates a much larger signal called the action potential (overall amplitude of 100MV), which has a constant size and travels along the axon over long distances. When this action potential arrives at the synapse, chemicals called neurotransmitters transmit the signal to activate the synaptic potential in the dendrite of the next neuron. Neurotransmitters: Dopamine, Norepinephrine(mood, arousal, sexual behavior), Serotonin (sleep mood, sexual behavior, anxiety), GABA Ligands fit receptors exactly and activate or block them: • Endogenous ligands—neurotransmitters and hormones • Exogenous ligands—drugs and toxins from outside the body Criteria for Neurotransmitters: 1. Substance exists in presynaptic axon terminals (look below) 2. Is synthesized in presynaptic cells 3. Is released when action potentials reach axon terminals 4. Receptors for the substance exist on postsynaptic membrane 5. When applied, substance produces changes In the postsynaptic cell Simplified: Neurotransmitters are chemical substances that transmit a signal across the Synapse Presynaptic element (THINK AXONS)= the enlarged end of an axon Postsynaptic element(THINK DENDRITES)= specialized area of the dendrite or cell body with receptors for the neurotransmitters (NOTE: information is transmitted from the presynaptic element to the postsynaptic element) These 2 elements separated by a small gap called the synaptic cleft Synaptic vesicles= tiny packets that allow neurotransmitters to travel between neurons (found in the synaptic boutons) When an action potential arrives at the presynaptic element, the synaptic vesicles bind with the membrane of the presynaptic element and release their neurotransmitters, which diffuse across the synaptic cleft. Nodes of Ranvier—regularly spaced small gaps in the insulating myelin sheath Multiple Sclerosis cause the loss of insulating myelin sheath from axons in various regions of the brain Axon Hillcock= this is where the electrical impulse that stimulates neurotransmitter release arises, thereby transmitting information. Where the integration of excitatory and inhibitory post synaptic potentials occurs . J So I thought of a personal example to help identify the function of the nervous system. I have generalized anxiety disorder. This is categorized and implicated by a decrease in serotonin (NEUROTRANSMITTER). I ultimately have a decrease of Serotonin, which means this neurotransmitter is not transmitting signals to activate the synaptic potential within the synapse. Without this, the neuron cannot reach a particular threshold to generate an action potential. When this happens, My body’s Serotonin transmitters cannot be released (decreased serotonin means increased anxiety). I take PROZAC, an SSRI (Selective SERETONIN reuptake inhibitors) to help increase 5-HT activity that allow serotonin to accumulate in the synapses to be able to reach both the synaptic potential and action potential. To some it up a bit more…. Basic functioning cycle of a neuron: • The Central Nervous System (CNS) and Peripheal Nervious System (PNS) is composed of independent cells. • Information is transmitted from cell to cell across synapses. • The neuronal cell body and dendrites receive information across synapses. • Dendrites have a branched arborization pattern to facilitate contacts. • Information is transmitted from the presynaptic neuron to the postsynaptic neuron. • It is very important to remember that just because a neuron receives stimulation from another neuron (across the synapse), it does NOT mean that neuron itself will fire (have an action potential). Cocaine works by blocking a mechanism through which the neurotransmitters norepinephrine and dopamine are reabsorbed into presynaptic sites. When someone becomes addicted, the brain and body reduce the number of receptors for norepinephrine and dopamine. The nervous system is composed of 2 main components- the CNS and the PNS -The CNS has 2 main parts: the brain and spinal cord -The brain is dominated by 2 cerebral hemispheres -The cerebral cortex is the outermost layer of the cerebral hemispheres -The two cerebral hemispheres are connected by a bundle of axons known as the Corpus Cassosum -THE CNS is built to receive sensory information and sends action commands to the body through a system of major nerves (bundles of axons) -Spinal nerves connect to the spinal cord and send commands that originate in motor neurons out from the spinal cord to the body’s organs and muscles. -These spinal nerves carry signals in and out of the PNS which also has 2 major components: the somatic nervous system that controls skeletal muscles and the autonomic nervous system that controls the body’s organ functions. (PNS consists of all parts of the nervous system found outside the skull and spinal column) Hindbrain- serves a variety of crucial purposes, including control over respiration an level of arousal (that is, sleep and wakefulness) *** on the surface of the hindbrain is the cerebellum, a large structure that supports fine coordination of movement and learning. It is also essential for learned coordination between specific sensory stimuli and adjustments to movements. EX: blinking in anticipation of an air puff. Forebrain -2 subdivisions: the lower, thalamus(set of nuclei with various purposes in communicating information from the lower brain areas to the cerebral cortex) And at the bottom of the thalamus is the hypothalamus (regulates basic survival behaviors like eating, sleeping, sex) -Surface of the forebrain are 2 roughly symmetrical cerebral hemispheres. One hemisphere is the (1) limbic system (include structures important for learning and memory). -- Limbic System Lies on both sides of the Thalamus, just under the cerebellum The other is the (2) Basal Ganglia (important in motor control), include four nuclei: The caudate nucleus, the putamen, and the globus pallidus under the cerebral cortex The striatum refers to a small group of contiguoussubcortical structures: the caudate, putamen, and nucleus accumbens. The striatum (primarily the dorsal striatum) is one of the main input areas for the basal ganglia. It receives the bulk of its incoming fibers from the cerebral cortex, but it also receivesafferent fibers from the substantia nigra and thalamus I will discuss 2 structures of the limbic system: One structure is the hippocampus is essential to conscious memory (especially long-term) and learning. This is where declarative or explicit knowledge is encoded. It is located in the temporal lobe within the center of the brain. Another structure is the amygdala that coordinates emotional responses to stimuli (regulation) and perception of odor. The cerebral hemispheres also include 4 lobes: Frontal= most anterior region Parietal= lies between the frontal and occipital lobes, touch- based senses Occipital= posterior region, visual processing Temporal= The major cortical area involved in complex cognitive tasks such as memory/auditory processing, emotion, language comprehension, and hearing lateral region, --- Researchers also talk about the Insular Lobe Impaired emotional responses and social interactions (such as angry ou tbursts) are linked to damage in the Frontal cortex. The Frontal Lobe and specifically the prefrontal cortex mediate a variety of executive functions (although the other lobes are also involved through various neural pathways). The brain service has 2 types of area: A *gyrus* is a ridged or raised portion of the convoluted brain surface A sulcus is a furrow of the convoluted brain surface Habituation= our capacity to ‘tune out’ inconsequential stimuli. - Reduction in response (eventually the response disappears or is greatly diminished) to a sensory stimulation that results in an autonomic response- like blinking - Thought of as learning to ignore a stimulus that is not biological important - Stimulus and response SPECIFIC(meaning it decreases only the response executed repetitively following a specific stimulus) - Higher stimulus intensities result in slower habituation - Used to test learning and memory in infants - Ex: we don’t notice our clothing touching our skin, no longer hearing a background noise in your room such as a heater or fan. - Occurs at the sensory response *(S-R)* circuit level or system - Allows us to not attend to unimportant stimuli - The Law of Exercise states that the S-R connection is strengthened by use and weakened with disuse. (HINT: think habit, you are no longer aware, it just comes naturally) Sensitization= the opposite of habituation. -When we become more aware of and responsive to stimuli for a substantial period -occurs when there is an increase in the magnitude of behavioral responsiveness to stimuli -occurs at the state (arousal) level or system -makes us more aware of the same stimulus -ex: Say you are subject to a loud noise (such as a falling tree limb that startles you) now you are sensitized to all loud noises and correlate them to something scary with a different alter motive . You may here things you did not notice before. Habituation and Sensitization are the simplest forms of learning and are considered forms of non-associative Learning: their effects require no specific association with action or consequences. Meaning we are not learning that one-stimulus signals another stimulus or learning that certain responses result in certain stimuli. A **fixed action pattern** is a behavior that is innate and demonstrated by all members of the species. Sensory Adaptation= occurs at the sensory organ level when sensory receptors change their sensitivity to the stimulus. NONSPECIFIC LOSS OF RESPONSES TO A STIMULUS. Not stimulus or response specific. Fatigue= refers to a motor neuron responsible for muscle contractions ceasing to respond respond because of an energy deficit. Eric Kandel and the his research on Aplysia • Examined the behavioral, anatomical, and physiological properties of habituation and sensitization in Aplysia, a large sea snail. - Most of the study focused on the gill withdrawal reflex - Snail extends its gills at rest along with a fleshy continuation of the gill called the siphon.. BUT it is a delicate organ that is easily damaged - Therefore, when signs of danger, the snail can withdraw the gill and siphon - A small flap called the mantle shelf covers the gill and siphon - *** Rapid, lasting habituation can be observed in the Aplysia gill withdrawal reflex. *** In Aplysia, the role of the facilitatory interneuron is to increase the release of neurotransmitter from the sensory neuron. Perceptual learning (Non- associative): 2 types: (1)Perceptual skill learning= improves the ability to detect, discriminate, and classify sensory stimuli of a particular category • Improves judgments about general stimulus features. • This type of learning and memory involves increased attention or focus on particular stimulus features (*attentional weighting*), learning what features are important (feature imprinting), distinguishing stimuli according to relevant features (differentiation), and combining parts of a stimulus into an important percept (unitilization) Ex: If you were to work with a pack of newborn white lab puppies you may think they all look exactly the same and couldn’t tell the difference between any of them. After a while of being presented with this stimulus, you could identify or discriminate the differences between the puppies. *Factors that influence perceptual skill learning (PSL)* PSL has 4 main properties that involve the specificity of what is learned, the role of attention, the speed with which learning occurs, and the role of sleep. • First, the specific visual experience determines the type of changes induced in performance and the nervous system ( PSL is quite feature-specific, so the results are limited to the sensory parameters targeted for training) • Second, attention and motivation influence the extent of learning (learning occurs only for the relevant stimulus and not the irrelevant stimulus that receives equal exposure) • Third, PCL is based on a slow incremental process by which the cerebral cortex is modified to ‘tune in’ the relevant stimulus dimension. • Fourth, sleep may be essential for performance improvements in PCL (2)Perceptual Memory: the unconscious formation and representation of specific previously experienced stimuli and the expression of these representations by unconscious changes in performance and tasks involving those stimuli **Pavlov’s Classical (or Respondent) Conditioning ** Conditioning: a stimulus that initially produces no response can acquire the ability to produce one. Terminology of Conditioning: Unconditioned Stimulus (US or UCS)- elicits a reflexive response without learning Unconditioned response(UR or UCR)- the response that occurs with a US^, typically a reflex, emotion, or drug state that Is involuntary and automatic. Neutral Stimulus: A stimulus not capable of producing an unconditioned response (before learning). Conditioned Stimulus(CS)- a previously neutral stimulus that has acquired the ability to evoke a response. Conditioned Response (CR)= the learned response, often similar to the UR, an involuntary reflex, emotion, or drug state. Prior to conditioning: Neutral Stimulus Orientation to sound but (bell) no response US (food powder in UR dogs mouth (salivation) During Conditioning, CS is paired with US Neutral Stimulus CS (bell) CR + } (Salivation) US (Food powder) After Conditioning CS CR (Salivation) (Bell) Review Classical conditioning is Stimulus (S) elicited> Response (R) conditioning since the antecedent stimulus causes the reflexive or involuntary response to occur. 1. US elicits UR. A stimulus will naturally (without learning) elicit a reflexive response. 2. A Neutral Stimulus (NS) does not elicit the response of interest: this stimulus is a neutral stimulus since it does not elicit the UR 3. The NS is repeatedly paired with the US 4. The NS is transformed into a Conditioned Stimulus (CS): this is, when the CS is presented by itself, it elicited or causes the CR(which is the same involuntary response as the UR: the name changes because it is elicited by a different stimulus) this is written CS elicits > CR. Examples: 1. Learning to feel upset at the sight of flashing police lights in your rearview mirror 2. Learning to feel anxiety when you hear the sounds at the dentists office 3. Felling tender emotions when you hear a song that was associated with your first romance. Conditioning Processes Stimulus generalization= stimuli like the CS become able to evoke the conditioned response. Extinction= If the US and CS are not paired, the CS loses its ability to produce a conditioned response. <not a conditioning process>(Exposure therapy is a technique in behavior therapy used to treat anxiety disorders. It involves the exposure of the patient to the feared object or context without any danger, in order to overcome their anxiety) Spontaneous Recovery= an extinguished CS briefly returns but quickly goes away again. Dishinibition= phenomenon in which extinguished CR reappears not spontaneously but in response to another, typically arousing stimulus. This is a line of evidence that indicates that conditioned responses are not lost during extinction What is learned? -Pavlov believed the association was between the two stimuli (bell and meat powder), not between the tone and salivation This is called S-S learning (Stimulus-Stimulus) -In general, the most effective procedure for producing most classically conditioned associations is the delay conditioning procedure. -Classical conditioning works best when: the CS precedes the US Factors Affecting Conditioning • Timing= how closely in time are the CS and the US, and which occurs first • Novelty for the CS and US • Intensity (strength) of the CS and US • Consistency of the pairing between the CS and the US (if if one or the other appears alone then conditioning Is weakened. The suppression ratio equals= CS responding / (CS responding + pre-CS responding) Contiguity is a behaviorist approach that states, for learning to occur, the response must occur in the presence of or very soon after a stimulus is presented, or an association will not occur. In essence, this is a behaviorist view based on the idea that learning will occur only if events occur relatively close together in time Skinners Operant conditioning (S-R Learning) (sometimes referred to as instrumental conditioning) is a method of learning that occurs through rewards and punishments for behavior. Through operant conditioning, an association is made between a behavior and a consequence for that behavior. -Operant conditioning relies on a fairly simple premise - actions that are followed by reinforcement will be strengthened and more likely to occur again in the future. Conversely, actions that result in punishment or undesirable consequences will be weakened and less likely to occur again in the future Skinner distinguished between two different types of behaviors: respondent behaviors and operant behaviors. Respondent behaviors are those that occur automatically and reflexively, such as pulling your hand back from a hot stove or jerking your leg when the doctor taps on your knee Operant behavior, on the other hand, are those under our conscious control Components of Operant Conditioning Some key concepts in operant conditioning: Reinforcement Reinforcement is any event that strengthens or increases the behavior it follows. There are two kinds of reinforces: 1. Positive reinforcers are favorable events or outcomes that are presented after the behavior. In situations that reflect positive reinforcement, a response or behavior is strengthened by the addition of something, such as praise or a direct reward. 2. Negative reinforcers involve the removal of an unfavorable events or outcomes after the display of a behavior. In these situations, a response is strengthened by the removal of something considered un pleasant. In both of these cases of reinforcement, the behavior increases. Punishment Punishment, on the other hand, is the presentation of an adverse event or outcome th at causes a decrease in the behavior it follows. There are two kinds of punishment: 1. Positive punishment, sometimes referred to as punishment by application, invol ves the presentation of an unfavorable event or outcome in order to weaken the response it follows. 2. Negative punishment, also known as punishment by removal, occu rs when an favorable event or outcome is removed after a behavior occurs. In both of these cases of punishment, the behavior decreases. How the Morris Water Maze Works (watch the video, you will understand the concept and procedures better than I could ever try to explain them on this study guide) -water-maze-test-for-learning-memory- deficits-alzheimers The effect of VPA on escape latency in the Morris Maze= VPA improves memory deficits in AD transgenic mice


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