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Full-Text Articles in Experimental Analysis of Behavior

Testing Models Of Context-Dependent Outcome Encoding In Reinforcement Learning, William M. Hayes Iv Apr 2022

Testing Models Of Context-Dependent Outcome Encoding In Reinforcement Learning, William M. Hayes Iv

Theses and Dissertations

Previous studies of reinforcement learning (RL) have established that choice outcomes are encoded in a context-dependent fashion. Several computational models have been proposed to explain context-dependent encoding, including reference point centering and range adaptation models. The former assumes that outcomes are centered around a running estimate of the average reward in each choice context, while the latter assumes that outcomes are compared to the minimum reward and then scaled by an estimate of the range of outcomes in each choice context. However, there are other computational mechanisms that can explain context dependence in RL. In the present study, a frequency …


Contributions Of Reward Identity And Time Prediction Errors To Pavlovian Learning, Daniel B. Siegel Sep 2021

Contributions Of Reward Identity And Time Prediction Errors To Pavlovian Learning, Daniel B. Siegel

Dissertations, Theses, and Capstone Projects

Some models of associative learning attempt to explain effects such as blocking and unblocking as reflecting a prediction error (PE): Associative strength, and thereby learning, are said to be greater when the unconditioned stimulus (US) received following a cue deviates from one’s expectations. Some models of PE-motivated behavior and PE-relevant brain activity represent the US as a single quantitative variable for outcome value, and that learning therefore only occurs when outcome value differs from expectations. There is growing evidence to suggest that changes in other dimensions of reward, such as identity and timing, also contribute to learning. In Experiment 1, …


Mapping Out Learning: How Aerobic Exercise, Sex And Alzheimer's Disease Impact Learning, Grace G. Bouker Jan 2021

Mapping Out Learning: How Aerobic Exercise, Sex And Alzheimer's Disease Impact Learning, Grace G. Bouker

Senior Independent Study Theses

Exercise has the power to ameliorate the outward symptoms of Alzheimer’s Disease (AD) by rescuing hippocampal-dependent learning and memory. The goal of this research was to map out how exercise and sex impact behavioral learning in AD mouse models by looking outside of the traditional measurements in the Morris water maze (MWM), as they fail to describe the process of learning itself. I calculated heading error at maximum velocity, manually categorized search strategy in the MWM across trials, and determined flexibility in the probe trial for transgenic and wild-type mice who were exposed to exercise or control housing. Mice significantly …


Experience-Dependent Changes In Nucleus Accumbens Activity Predict Cued Approach Learning: Contribution Of Nmda Receptors, Mercedes Vega Villar Feb 2020

Experience-Dependent Changes In Nucleus Accumbens Activity Predict Cued Approach Learning: Contribution Of Nmda Receptors, Mercedes Vega Villar

Dissertations, Theses, and Capstone Projects

Animals learn associations between environmental cues and the natural rewards they predict (e.g., food, water, sex). As a result, reward-predictive cues come to trigger vigorous reward-seeking responses. Many neurons in the nucleus accumbens (NAc) become excited upon presentation of an already-learned reward-predictive cue. These NAc responses encode the motivational value of the cue and are necessary for the expression of the subsequent approach behavior. However, the precise temporal relationship between the emergence of cue-evoked excitations in the NAc and the acquisition of cued approach behavior remains unknown. In Experiment 1, NAc activity was recorded as rats learned to approach a …


The Study Of Encoding And Depth Of Learning, Camryn Blauth Dec 2019

The Study Of Encoding And Depth Of Learning, Camryn Blauth

Psychology Student Research

This study is looking at how we learn by testing three different levels of encoding. Based on how a word is used the level of encoding changes. In order to test this, three groups were formed based on randomly handing out sheets. Each sheet had a question which required a different level of comprehension. It was a between-subjects design, with self-selecting participants that were mostly 18-year-old female students. The goal of this study was to find out if the more a word is comprehended, or the deeper the encoding, the more likely it is to be able to remember that …


How Instruction, Math Anxiety, And Math Achievement Affect Learning A Novel Math Task: Evidence For Better Instruction, Amy Jane Mcauley Dec 2018

How Instruction, Math Anxiety, And Math Achievement Affect Learning A Novel Math Task: Evidence For Better Instruction, Amy Jane Mcauley

UNLV Theses, Dissertations, Professional Papers, and Capstones

The primary goal of this paper is to test how math anxiety, achievement, and instruction affect learning a novel math task. Currently, most research measures achievement and math anxiety on previously learned tasks. A two-part study was proposed to measure the effects of math anxiety on learning modular arithmetic (MA), a novel math task that involves subtraction and division. Participants of varying degrees of anxiety and achievement were randomly assigned to either a specific or vague instruction condition. Participants were either taught how to solve the task or given minimal information about how to solve the task. Before moving on, …


Mechanisms Of Navigation In Fiddler Crabs: An Analysis Of Allocentric And Egocentric Contributions, Stephen G. Volz Sep 2017

Mechanisms Of Navigation In Fiddler Crabs: An Analysis Of Allocentric And Egocentric Contributions, Stephen G. Volz

Dissertations, Theses, and Capstone Projects

Navigation in biological systems is a complex task-set that involves learning processes and may include constructing representations of features of their environment. Across the animal kingdom, different learning mechanisms have evolved to similar spatial problems. The extent to which mechanisms are conserved across taxa are an important research area that can guide our understanding of the cognitive dimensions of navigation. Recent studies of mammals, birds, and arthropods has found that these animals often attend to multiple forms of sensory cues, and to either integrate the solutions generated by these cues, or at times prefer one form of cue over another. …


Roles Of Gabab, Muscarinic And Nicotinic Receptor Signaling In The Acquisition And Expression Of Fructose And Fat-Conditioned Flavor Preferences And Acquisition Of Quinine-Conditioned Flavor Avoidances In Rats, Francis M. Rotella Sep 2017

Roles Of Gabab, Muscarinic And Nicotinic Receptor Signaling In The Acquisition And Expression Of Fructose And Fat-Conditioned Flavor Preferences And Acquisition Of Quinine-Conditioned Flavor Avoidances In Rats, Francis M. Rotella

Dissertations, Theses, and Capstone Projects

In addition to increased intake of sweet solutions by mammals, learning, particularly classically-conditioned “Pavlovian-like” learning, also plays an important role. An orosensory conditioned flavor preference (CFP) can be elicited by pairing one novel flavor (conditioned stimulus, CS+) with a fructose solution and a second novel flavor (CS-) with a saccharin solution. Rats will prefer the CS+ flavor in a subsequent 2-bottle choice test with both flavors mixed in saccharin. Previous pharmacological analyses revealed that systemic administration of dopamine (DA) D1 and D2 as well as NMDA, but not opioid, receptor antagonists eliminated the acquisition (learning) of fructose-CFP. Further, expression of …


A Study Of The Effects Of Methylene Blue, Scopolamine, And Stress On Learning And Memory In The Zebrafish, Erika Marie Caramillo May 2017

A Study Of The Effects Of Methylene Blue, Scopolamine, And Stress On Learning And Memory In The Zebrafish, Erika Marie Caramillo

Dissertations

With the ever-increasing aging population, neurodegenerative diseases such as Alzheimer’s disease are becoming more prevalent. Owing to such increases in age related cognitive decline, the need for research into new, effective treatments is more imperative now than ever. The zebrafish is an excellent animal model that can be used to study the potential pharmacological effects of novel cognition-centric treatments. However, more needs to be known about the species and its ability to learn, remember, and the effects certain drugs have on behavior. In this dissertation, I aimed to better understand zebrafish cognition through the testing of three conditions: a known …


Renewal In The Context Of Stress: A Potential Mechanism Of Stress-Induced Reinstatement, Scott Timothy Schepers Jan 2017

Renewal In The Context Of Stress: A Potential Mechanism Of Stress-Induced Reinstatement, Scott Timothy Schepers

Graduate College Dissertations and Theses

In the animal laboratory, stressors can produce the relapse of drug-seeking behaviors after the behavior has been inhibited by extinction. This type of relapse has been called stress-induced reinstatement, and it models the relapse that is commonly reported in human populations. Interestingly, in the laboratory, stress does not typically reinstate extinguished behaviors that have been reinforced by food. One account of the discrepancy is that drugs of abuse may induce stress; therefore, when organisms learn to respond for drugs, they might learn to make the response in the “context” of stress. If so, then stress-induced reinstatement may be better described …


Dose-Related Sex Differences In The Establishment Of Conditioned Disgust (Anticipatory Nausea), And The Effect Of Peripubertal And Adult Immune System Stimulation With The Endotoxin Lipopolysaccharide (Lps) On Learning And Memory In The Rat, Caylen J. Cloutier Dec 2016

Dose-Related Sex Differences In The Establishment Of Conditioned Disgust (Anticipatory Nausea), And The Effect Of Peripubertal And Adult Immune System Stimulation With The Endotoxin Lipopolysaccharide (Lps) On Learning And Memory In The Rat, Caylen J. Cloutier

Electronic Thesis and Dissertation Repository

This thesis examined sex differences in the establishment of lithium chloride (LiCl) – induced conditioned disgust behavior (anticipatory nausea) to a distinct context, as well as, the establishment of conditioned place avoidance (CPA) using rodent models. Also examined were potential sex differences in response to treatment with the bacterial endotoxin, lipopolysaccharide (LPS), and its effect on learning and memory. In Chapter 2, male and female naïve Long-Evans rats were injected (intraperitoneally; i.p.) with either 200 µg/kg LPS or 0.9% (NaCl), 90 minutes prior to i.p. injections of either 128 mg/kg LiCl or 0.9% NaCl, and immediately placed into a distinctive …


Motivational Situations Of Choice, Charles N. Elliott, Paul A. Story Sep 2016

Motivational Situations Of Choice, Charles N. Elliott, Paul A. Story

The Kennesaw Journal of Undergraduate Research

The present research explores situations that demonstrate enhancing effects on motivation based on the amount of choice seen by individuals. Individuals who are intrinsically motivated see more choice in certain academic settings, including those that foster self-regulation and autonomy. Extrinsically motivated individuals are predicted to see more promise in reward and external regulation strategies. We identified six separate situations: a free will situation, a learning of materials situation, an instructor feedback situation, an extra credit situation, and two time-based situations. Four of these situations target a certain type of motivation, either intrinsic or extrinsic. The other two situations were used …


Recognition Training For Faces Across Age Gaps, William Blake Erickson Aug 2016

Recognition Training For Faces Across Age Gaps, William Blake Erickson

Graduate Theses and Dissertations

Face recognition is a problem that has theoretical and applied value. However, the fact of facial aging is rarely addressed in research and unmentioned in the major theories of face recognition. Facial aging also has ramifications for missing persons and fugitive cases, confounding attempts by law enforcement to recover these people whose last known images are years or decades out of date. This dissertation reports three studies aimed at measuring baseline age-gap recognition ability and testing various training regimens designed to increase accuracy rates for this unique kind of recognition task.


The Effect Of The Long Anchor Duration On Performance In The Temporal Bisection Procedure, Sho Araiba Feb 2016

The Effect Of The Long Anchor Duration On Performance In The Temporal Bisection Procedure, Sho Araiba

Dissertations, Theses, and Capstone Projects

The present study investigated the determinants of the location of the bisection point (BP) in the temporal bisection procedure. Interest in the study of temporal perception emerged from the finding of the scalar property such as Weber’s law for time and the ratio rule in behavior under Pavlovian and instrumental conditioning. One method to investigate temporal perception in both non-human animals and humans is the temporal bisection procedure. The primary dependent variable of this procedure is the BP, which has been taken as the subjective midpoint between two durations. The ratio similarity rule (Gibbon, 1981) hypothesizes that the location of …


Effects Of Failure On Subsequent Performance In The Bottlenose Dolphin (Tursiops Truncatus), Lisa Kay Lauderdale Dec 2015

Effects Of Failure On Subsequent Performance In The Bottlenose Dolphin (Tursiops Truncatus), Lisa Kay Lauderdale

Master's Theses

The current study examined the immediate effects of two types of failure during operant-conditioning based training sessions in 11 bottlenose dolphins (Tursiops truncatus) at the U.S. Navy Marine Mammal Program in San Diego, CA. While learning a multi-faceted behavior not commonly found in nature, such as beaching, animals are likely to perform approximations of the behavior that are not successful and do not result in reinforcement. The effects of failure on beaching trials were systematically investigated over a three-month period by determining the mean failure rate and the probability of success after initial success, initial attempts, and initial …


Effects Of 17Β-Estradiol On Learning And Memory And Strategy Use During A Hole Board Spatial Navigation Task In Aged Male Rats, Megan Berthiaume Apr 2015

Effects Of 17Β-Estradiol On Learning And Memory And Strategy Use During A Hole Board Spatial Navigation Task In Aged Male Rats, Megan Berthiaume

Seton Hall University Dissertations and Theses (ETDs)

Treatment with 17β- estradiol has been shown to ameliorate age related deficits in spatial learning and memory as well as to promote the use of an allocentric strategy during spatial navigation. While the majority of research using 17β- estradiol has been done using females rodents, there have been studies showing an improvement in spatial learning and memory and promoted use of allocentric strategies in spatial navigation in males as well. In males testosterone (T) is metabolized into estradiol by aromatase. As circulating levels of T decline with aging there is less available T to be metabolized into estradiol. The current …


Behavioral Effects Of Fluoxetine On Aggression And Associative Learning In Betta Splendens, Benjamin Eisenreich Jan 2015

Behavioral Effects Of Fluoxetine On Aggression And Associative Learning In Betta Splendens, Benjamin Eisenreich

Graduate Student Theses, Dissertations, & Professional Papers

While the link between serotonin and the behaviors of aggression and learning has been elucidated, few studies have examined the impact serotonin has on learning for aggressive rewards. In particular, the SSRI fluoxetine has been demonstrated to reduce aggression as well the acquisition of instrumental responding for rewards indicating that this drugs behavioral effect may be related to motivational processes important for learning. To examine the relationship between fluoxetine and motivational process important for learning, two experiments were conducted using Betta splendens, a species well known for their robust aggressive response and drive to engage in aggressive behaviors, to examine …


Implicit Theories Of Intelligence And Learning A Novel Mathematics Task, Nathan Oehme Rudig Aug 2014

Implicit Theories Of Intelligence And Learning A Novel Mathematics Task, Nathan Oehme Rudig

UNLV Theses, Dissertations, Professional Papers, and Capstones

The social-cognitive model of motivation states that students adopt a theory of the nature of intelligence that guides their goals in academia and their responses to academic setbacks. Students who believe intelligence is an unchanging entity within them are more likely to adopt goals to display high ability, hide low ability, and respond helplessly to failed schoolwork. Conversely, a student who believes intelligence is a measure of effort and persistence will be motivated to gather knowledge and acquire new skills. The current study investigated the role theories of intelligence play in the field of mathematics understanding. In two experiments, participants …


Interest Level Improves Learning But Does Not Moderate The Effects Of Interruptions: An Experiment Using Simultaneous Multitasking, Maureen A. Conard, Robert F. Marsh Feb 2014

Interest Level Improves Learning But Does Not Moderate The Effects Of Interruptions: An Experiment Using Simultaneous Multitasking, Maureen A. Conard, Robert F. Marsh

Psychology Faculty Publications

It has become common practice for people to multitask with electronic devices in everyday situations. We examined the effects of interrupting participants with instant messages while they watched a video presentation in a situation that resembled commonplace events such as a business meeting, a training presentation, or a classroom lecture. We compared them to participants who were not interrupted. We also investigated how interest in the topics presented affected learning. Results showed that interruptions reduced learning, by a small but statistically significant margin, which is consistent with the findings of similar studies. Importantly, interest level was as strong a predictor …


Examining The Testing Effect Using The Dual-Process Signal Detection Model, Nicole Jessica Bies-Hernandez May 2013

Examining The Testing Effect Using The Dual-Process Signal Detection Model, Nicole Jessica Bies-Hernandez

UNLV Theses, Dissertations, Professional Papers, and Capstones

Taking a test can lead to enhanced long-term retention compared to not practicing the information or simply restudying, a finding known as the testing effect (Roediger, Agarwal, Kang, & Marsh, 2010). The current study examined whether the dual-process signal detection (DPSD) model (Yonelinas, 1994) offers an approach for investigating the testing effect across two experiments. Experiment 1 investigated if the DPSD model could be used to examine the testing effect, and it also examined a factor (i.e., the number of practice sessions) that influences the magnitude of the testing effect. Experiment 2 investigated whether making the final test dependent on …


A Model Of Flow And Play In Game-Based Learning The Impact Of Game Characteristics, Player Traits, And Player States, Davin Pavlas Jan 2010

A Model Of Flow And Play In Game-Based Learning The Impact Of Game Characteristics, Player Traits, And Player States, Davin Pavlas

Electronic Theses and Dissertations

In this dissertation, the relationship between flow state, serious games, and learning was examined. Serious games, which are games that convey something other than enjoyment (e.g., learning), are increasingly popular platforms for research, training, and advertisement. The elements that make serious games useful to researchers, trainers, and practitioners are closely linked to those that make up the positive psychology construct of flow state. Flow state describes an optimum experience that is encountered when a variety of factors are met, and is characterized by high focus, engagement, motivation, and immersion. While flow state is often discussed in the serious games literature, …


Observational Learning In Wild And Captive Dolphins, Deirdre Yeater, Stan A. Kuczaj Ii Jan 2010

Observational Learning In Wild And Captive Dolphins, Deirdre Yeater, Stan A. Kuczaj Ii

Psychology Faculty Publications

Many non-human species imitate the behavior of others, and dolphins seem particularly adept at this form of observational learning. Evidence for observational learning in wild dolphins is rare, given the difficulty of observing individual wild animals in sufficient detail to eliminate other possible explanations of purported imitation. Consequently, much of the evidence supporting observational learning in dolphins has involved animals in captive settings. This research suggests that dolphins have an affinity for mimicry, and that they are more successful at observational learning if they choose to imitate another rather than being asked to do so. These results, combined with those …


The Effect Of Substance P On Ovariectomy-Induced Memory Deficits In Rats, Jamie L. Haga Jan 2006

The Effect Of Substance P On Ovariectomy-Induced Memory Deficits In Rats, Jamie L. Haga

Theses, Dissertations and Capstones

The present experiment was designed to test whether pretreatment with substance P would affect ovariectomy-induced memory deficits in rats for retention in the Morris water maze. Adult female Sprague-Dawley rats were divided to two groups: (1) control (received saline) and (2) experimental group (received substance P). All rats underwent an ovariectomy, as this has been shown to significantly impair spatial reference learning and memory (Monteiro, Matté, Bavaresco, Netto, & Wyse, 2005). Approximately 8 months after surgery, all rats were trained in the Morris water maze in order to evaluate both reference and working memory. Results showed that substance P did …


Effects Of Encoding Variety And Concurrent-Task Practice On The Transfer And Retention Of Complex Skill, Peter S. Winne Apr 1984

Effects Of Encoding Variety And Concurrent-Task Practice On The Transfer And Retention Of Complex Skill, Peter S. Winne

Psychology Theses & Dissertations

The present study investigated the effects of dual-task practice and the variety of problems solved during practice on (a) the acquisition of procedural and declarative skills and the development of concurrent-task skills, and (b) the utilization and maintenance of two types of strategies. Strategies were defined as the use of different mixes of skills pertaining to procedures and specific declarative solutions. Two tasks--mental arithmetic and trigrams--were used to examine problem-solving skills and strategies both immediately following practice and again under delayed conditions. Eighty subjects were randomly assigned to one of four practice conditions by factorially combining practice mode (single- or …


Effects Of Integrating Functions Of Left And Right Hemispheres On Recall Memory, Jaclyn Jean Trost Jan 1984

Effects Of Integrating Functions Of Left And Right Hemispheres On Recall Memory, Jaclyn Jean Trost

Theses Digitization Project

No abstract provided.


The Effects Of Free And Forced Choice With A Time Gradient And Monetary Incentive In A Serial Learning Task, Ernest Joseph Lucier Jr. Nov 1970

The Effects Of Free And Forced Choice With A Time Gradient And Monetary Incentive In A Serial Learning Task, Ernest Joseph Lucier Jr.

All Master's Theses

This experiment was designed to determine the effects of free and forced choice within time gradients of five and eight seconds using monetary incentive on a serial learning task. A series of nonsense symbols were successively presented to thirty-six subjects whose task was to learn the serial with the least number of exposures.