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A Study Of Possible Pre-Cognitive Advantages Of Bilingualism, Marisela Gutierrez

Open Access Theses & Dissertations

Past research has suggested that second language acquisition has a beneficial effect on the development of inhibitory control processes in children and adults. This has been referred to as the "bilingual advantage" and is most commonly quantified using the Simon task. Whether the bilingual advantage extends to precognitive mechanisms has not yet been examined. The goals of this study were to examine the bilingual advantage in university students; and to examine whether the bilingual advantage extends to the precognitive filtering mechanism of sensorimotor gating. It was predicted that, as compared to monolinguals, bilingual university students would have greater inhibitory control, …

An Investigation Of The Knowledge And Beliefs Held By Teachers And Parents In A Parochial School System Regarding Attention-Deficit/Hyperactivity Disorder And The Variables That Predict Their Knowledge, Kendra-Lee Yvonne Pearman

Dissertations

Problem

Attention-Deficit/Hyperactivity Disorder (ADHD) is one of the most prevalent childhood disorders affecting 3 to 5% of school populations in the United States and other countries. Due to the behavioral and/or academic challenges of children with ADHD, they are at risk for grade retention, dropping out of high school, and teenage delinquency, which can lead to negative consequences in society. Children with ADHD are found in every school setting, including parochial schools. Past studies have found teachers and parents have inadequate knowledge about ADHD, which can negatively affect these children. This study investigated what teachers and parents of children in …

Educating Clinical Pastoral Education Supervisors: A Grounded Theory Study Of Supervisory Wisdom, Judith R. Ragsdale

Antioch University Dissertations & Theses

Clinical Pastoral Education (CPE) is an 80 year old education modality that provides professional education for students of pastoral care. Supervision is central to the CPE process. Pastoral supervisors in the Association for Clinical Pastoral Education (ACPE) have done little writing about their work educating Students in Supervisory Education (SSEs). The purpose of this dissertation is to identify and interview those practitioners in ACPE who have been identified by their peers as excellent in practice, and to cull their wisdom by listening to and categorizing their experience of supervising SSEs. The research question to the supervisors was: What is your …

A Search For Meaning: The Family’S Response To Serious Mental Illness, Katherine Marie Burrelsman

Antioch University Dissertations & Theses

It is a commonly held belief that it is inherent in human nature to strive for coherence and meaning in the midst of adversity. Whether this is short or long term, for immediate or prolonged functioning, we all strive to put experiences within events into a framework that enables us to develop a sense of order leading to acceptance and resolution. Therefore, each individual within a family system may develop a hypothesis in order to make a modicum of sense of what can appear to be an impossible situation. The participants involved in this study were individuals with relatives suffering …

Facilitation Of Learning Spatial Relations Among Goal Locations Does Not Require Visual Exposure To The Configuration Of Goal Locations, Bradley R. Sturz, Debbie M. Kelly, Michael F. Brown

Psychology: Faculty Presentations (2009-2022)

Human participants searched in a virtual-environment open-field search task for four hidden goal locations arranged in a diamond configuration located in a 5 x 5 matrix. Participants were randomly assigned to one of three groups: Pattern Only, Landmark + Pattern, or Cues + Pattern. All participants experienced a Training phase followed by a Testing phase. During Training, visual cues were coincident with goal locations for the Cues + Pattern group, and a single visual cue at a non-goal location maintained a consistent spatial relationship with the goal locations for the Landmark + Pattern group. All groups were then tested in …

Immune Responses To Methamphetamine By Active Immunization With Peptide-Based, Molecular Adjuvant-Containing Vaccines, Michael J. Duryee, Rick A. Bevins, Carmela M. Reichel, Jennifer E. Murray, Yuxiang Dong, Geoffrey M. Thiele, Sam D. Sanderson

Department of Psychology: Faculty Publications

Vaccines to methamphetamine (meth) were designed by covalently attaching a meth hapten (METH) to peptide constructs that contained a conformationally biased, response-selective molecular adjuvant, YSFKPMPLaR (EP54). Rats immunized with EP54-containing meth vaccines generated serum antibody titers to authentic meth, an immune outcome that altered meth self-administration. Immunization increased meth self-administration suggesting pharmacokinetic antagonism. The ability of immune sera to bind a METH-modified target protein dramatically decreased during and shortly after the meth self-administration assay, suggesting effective sequestration of free meth. However, the binding ability of immune sera to the METH-modified target protein was recovered 34 days after meth-free clearance time.

Responding To Societal Devaluation: Effects Of Perceived Personal And Group Discrimination On The Ethnic Group Identification And Personal Self-Esteem Of Latino/Latina Adolescents, Brian E. Armenta, Jennifer S. Hunt

Department of Psychology: Faculty Publications

The Rejection-Identification model (Branscombe, Schmitt, & Harvey, 1999) posits that perceived discrimination may lead to increased ingroup identification, which can help maintain psychological well-being in the face of societal devaluation. To address unknown aspects of this model, we examined the effects of perceived per¬sonal and group discrimination on the group identification and personal self-esteem of Latino/Latina adolescents. Results showed that perceived group discrimination was related to higher personal self-esteem via direct and indirect routes (i.e. through group identification). However, perceived personal discrimination was directly and indirectly associated with lower personal self-esteem. Moreover, these two levels of discrimination showed interactive effects …

The Receptor Mechanisms Underlying The Disruptive Effects Of Haloperidol And Clozapine On Rat Maternal Behavior: A Double Dissociation Between Dopamine D2 And 5-Ht2a/2c Receptors, Zhao Changjiu, Ming Li

Department of Psychology: Faculty Publications

Many antipsychotic drugs disrupt active components of maternal behavior such as pup approach, pup retrieval and nest building at clinically relevant doses in postpartum female rats. However, the neurochemical mechanisms underlying such a disruptive effect remain to be determined. This study examined the neurochemical mechanisms that mediate the disruptive effects of haloperidol (a typical antipsychotic) and clozapine (an atypical antipsychotic) on rat maternal behavior. Postpartum rats were administered with haloperidol (0.2 mg/kg, sc) or clozapine (10.0 mg/kg, sc) together with either vehicle (saline or water), quinpirole (a selective dopamine D₂/D₃ agonist, 0.5 or 1.0 mg/kg, sc), or …

The Dynamics Of Development: Challenges For Bayesian Rationality, Nils Straubinger, Edward T. Cokely, Jeffrey R. Stevens

Department of Psychology: Faculty Publications

Commentary on Oaksford & Chater, Precis of Bayesian Rationality

Oaksford & Chater draw a rather static picture of human reasoning by focusing on typical patterns of responses from adults. We propose a more dynamic perspective, which considers that reasoning systematically varies within individuals over the lifespan (Howe & Rabinowitz 1996; Markovits & Barrouillet 2002) and between individuals with different levels of knowledge and expertise (Ericsson et al. 2006).

The original articles, the full set of commentaries, and the authors' response are attached (below) as an "Additional file."

Rational Decisions: The Adaptive Nature Of Context-Dependent Choice, Alexandra G. Rosati, Jeffrey R. Stevens

Department of Psychology: Faculty Publications

Although classical economic theory hinges on the assumption that rational actors should seek to maximize gains, psychologists and behavioral economists have recently collected a wealth of evidence challenging this premise. In violation of the principles of rational choice, context appears to dramatically influence human decision making. Like humans, numerous nonhuman animals, ranging from honeybees to primates, are sensitive to context, suggesting deep evolutionary roots for seemingly irrational decision-making. Many psychologists have suggested that such choices may stem from cognitive biases that result in errors. We contend, however, that labeling context-dependent choices as errors obscures the real issue. Natural selection does …

Social Interaction Effects On Reward And Cognitive Abilities In Monkeys, Jeffrey R. Stevens, Marc D. Hauser

Department of Psychology: Faculty Publications

When given a choice between receiving $100 in 30 days and $110 in 31 days, most people wait for the larger, more delayed reward. However, when the choice is between $100 today and $110 tomorrow, many people shift their preferences to the smaller, immediate reward despite the same difference of $10 and one day. Reward properties—such as time to receipt—play a crucial role in our processing of rewards. However, reward processing does not only occur for individual decisions but also for social interactions; we must decide to either cooperate or compete with others for rewards. Humans stand out in the …

Dieting, Restraint, And Disinhibition Predict Women's Weight Change Over 6 Y, Jennifer S. Savage, Lesa R. Hoffman, Leann L. Birch

Department of Psychology: Faculty Publications

Background: Although disinhibited eating is positively associated with higher weight in women, it is not known whether restrained eating and dieting moderate the influence of disinhibited eating on weight change.

Objective: The objective was to investigate over 6 y the interactive effects of restrained and disinhibited eating and self-reported dieting to lose weight as predictors of weight gain in women.

Design: Data were collected from non-Hispanic white women (n = 163) every 2 y. Height and weight were measured in triplicate. Dietary restraint and disinhibition were assessed by using the Eating Inventory. Participants were also asked if they were …

Coherence, Complexity, And Information Flow: Self-Organizing Processes In Psychotherapy, David Pincus

Psychology Faculty Books and Book Chapters

"This chapter is written in the spirit of optimism, suggesting that self-organization is just such a general theory that may assist in providing a deeper, scientifically grounded understanding of the complex biopsychosocial processes involved in psychotherapy. To provide some foundation to this rather grand suggestion, the following review rests on five more specific theoretical propositions stemming from self-organization theory... The analysis of these propositions begins with an integrative review of traditional theories of interpersonal process through the lens of nonlinear dynamical systems (NDS) and self-organization theory in particular. Next, the contemporary empirical and theoretical developments using NDS to understand psychotherapy …

Neural And Behavioral Responses To The Use Of Auditory Feedback In Vocal Control, Colin S. Haweo

Theses and Dissertations (Comprehensive)

A large body of evidence suggests that the motor system maintains a forward model that predicts the sensory outcome of movements. When sensory feedback does not match the predicted consequences, a compensatory response corrects for the motor error and the forward model is updated to prevent future errors. Like other motor behaviours, vocalization relies on sensory feedback for the maintenance of forward models and to stabilize vocalizations.

Experiment 1 used event-related potentials (ERPs) to examine sensory processing of short feedback perturbations during an ongoing utterance. In one session, participants produced a vowel at an FO of their own choosing. In …

Can Overeating Induce A Conditioned Taste Avoidance In Previously Restricted Rats?, Amanda Louise Hertel

Theses and Dissertations (Comprehensive)

While feeding is rewarding, the feeling of satiation has been theorized to be aversive under certain conditions. Using a food-restriction model of overeating developed in our laboratory the results presented here suggest that overeating, and the resulting experience of satiation, is capable of supporting a conditioned taste avoidance.

Rats had either ad lib (n=8) or restricted (n=24) food access (receiving 50% of the food eaten by ad lib fed rats) for 8 days. All rats were then given 24 hr access to a 0.1% saccharin solution, and two groups of food-restricted rats were given access to either 100% of the …

Internal And External Triggers For Action, Shannon Matkovich

Theses and Dissertations (Comprehensive)

When the self paced preparation of an action is interrupted by a stimulus prompting the same motor response there is an increase in the reaction time to the stimulus as compared to an external or simple reaction time (SRT) condition (Obhi & Haggard, 2004). Previous studies have suggested that this cost is not attributable to perceptual or attentional factors. Therefore, to investigate the source of this RT cost we varied the motor demands of movements in Experiments one and two. Results indicated that the level of motor programming demands did not influence the RT cost in these experiments. While RTs …

Effects Of Context On Target Localization, Cheryl M. Lavell

Theses and Dissertations (Comprehensive)

The purpose of this thesis was to investigate how the presence of non-target objects can influence the planning of a movement towards a remembered target location. One specific aim was to examine how the temporal effects of the task could affect movement planning. The final aim of this thesis was to examine whether or not the mere presence of extrinsic cues can suppress the encoding of intrinsic cues.

It was found that when non-target objects are presented simultaneously with the target, interference occurs; however, if the non-target objects are presented at least 250 ms in advance of the targets performance …

The Effect On Response Complexity On Task-Switching Behaviour, Christina Shepherd

Theses and Dissertations (Comprehensive)

Research on task-switching has shown that when participants are asked to switch between two different tasks, they are slower than when they repeat the same task. These costs have also been shown to increase when the previous response is repeated; however, very little has been done to investigate the role of response complexity in this relationship. We manipulated response complexity by increasing both the number of stimulus-response pairs and the number of individual response components. We hypothesized that increased response complexity would increase both the switch costs and the response repetition effect. Results indicated that increasing the number of S-R …

Birds Of A Feather Sit Together: Physical Similarity Predicts Seating Choice, Sean Mackinnon

Theses and Dissertations (Comprehensive)

The relationship between physical similarity and seating preference was examined using two observational studies and one laboratory study. Using Campbell et al.’s (1966) seating adjacency formula, Study 1 found significant aggregation by glasses-wearing status and sex when observing seating patterns in a library computer lab. That is, men sat beside other men, glasses-wearers by other glasses wearers, and so on. Study 2 broadened this methodology by examining a wider variety of physical traits in university classrooms; specifically, race, sex, glasses-wearing, hair length and hair colour. Broadly speaking, multivariate tests revealed an overall tendency for people to sit beside physically similar …

Neural And Behavioural Effects Of The Ginkgo Biloba Leaf Extract Egb 761, Elham Satvat

Theses and Dissertations (Comprehensive)

Numerous studies have documented the cognitive-enhancing effects of standardized Ginkgo biloba leaf extracts (Ginkgo) both in humans and in rodents. In addition to its antioxidant and platelet-activating factor inhibiting properties, Gingko has been shown to protect cellular membrane fluidity, to enhance cerebral blood flow and microcirculation, and to modulate cholinergic system functioning, properties that have been suggested to underlie its cognitive-enhancing effects. However, the possible neurogenic-enhancing effects of Ginkgo on adult hippocampal neurogenesis as a possible mechanism underlying its nootropic effects have not been evaluated. The experiments discussed in the present thesis assessed such a possibility.

Chapter 1 …

The Tactile Motion Aftereffect, Peggy Joanne Planetta

Theses and Dissertations (Comprehensive)

The tactile motion aftereffect (tMAE) is a perceptual phenomenon in which illusory motion is reported following adaptation to a unidirectionally moving tactile stimulus. Unlike its visual counterpart, relatively little is known about the tMAE. For that reason, the purpose of this dissertation was to gain a better understanding of the tMAE using both psychophysical and neuroimaging techniques. In a series of five experiments the skin was adapted using a plastic cylinder with a square-wave patterned surface. Chapter 2 consists of two experiments, both of which adapted the glabrous surface of the right hand. Experiment 1 showed that the prevalence, duration, …

Does Type Of Stimulus Influence Task-Irrelevant Evaluative Categorization Processes?, Guadalupe Corral

Open Access Theses & Dissertations

The effect of stimulus type on task-irrelevant evaluative categorization was examined in two separate studies by using the P3 component from event-related brain potentials. The first study presented idiosyncratic stimuli consisting of individuals that were rated by participants as either positive or negative within sequences of pictorial and verbal stimuli. The second study presented sequences of novel and familiar stimuli consisting of previously normed unattractive and neutral individuals. It was hypothesized that pictures would elicit task-irrelevant evaluative categorization processes and so would novel stimuli (relative to words and familiar stimuli, respectively). Task-irrelevance was examined by assessing P3 peak amplitude to …

Wikipedia, Me, And Ohp, Irvin Sam Schonfeld

Publications and Research

No abstract provided.

Small Individual Loans And Mental Health: A Randomized Controlled Trial Among South African Adults, Lia C. H. Fernald, Rita Hamad, Dean Karlan, Emily J. Ozer, Jonathan Zinman

Dartmouth Scholarship

Background: In the developing world, access to small, individual loans has been variously hailed as a poverty-alleviation tool – in the context of "microcredit" – but has also been criticized as "usury" and harmful to vulnerable borrowers. Prior studies have assessed effects of access to credit on traditional economic outcomes for poor borrowers, but effects on mental health have been largely ignored.

Methods: Applicants who had previously been rejected (n = 257) for a loan (200% annual percentage rate – APR) from a lender in South Africa were randomly assigned to a "second-look" that encouraged loan officers to approve their …

Elucidating The Role Of The Α7 Nicotinic Receptor In The Etiology Of Schizophrenia., Michelle Johnson Chandley

Electronic Theses and Dissertations

The α7 subunit of the nicotinic receptor, a ligand gated ion channel with an affinity for nicotine, has long been implicated in the pathophysiology of schizophrenia due to the extremely high rate of smoking within the patient population. However, the exact role of the receptor has never fully been determined. In the following studies, various functions the receptor may assume in disease state are evaluated. There is a strong relationship between the immune system and schizophrenia, with the α7 subunit possibly serving as the link between the two. One of the following studies looks at the possibility of the receptor …

Evaluation Of The Stability And Validity Of Participant Samples Recruited Over The Internet., Daniel Z Lieberman

Psychiatry and Behavioral Sciences Faculty Publications

Research conducted via the Internet has the potential to reach important clinical populations of participants who would not participate in traditional studies. Concerns exist, however, about the validity of samples recruited in this manner, especially when participants are anonymous and never have contact with study staff. This study evaluated two anonymous samples that were recruited over the Internet to test an online program designed to help problem drinkers. The two studies were conducted 3 years apart, and different recruitment strategies were utilized. Despite these differences, the two samples were highly similar in demographic and clinical features. Correlations that have been …

Profile Of Alcohol And Drug Indicators For Hillsborough County, Florida, Kathleen A. Moore, M. Scott Young, Ellen Snelling, Sue Carrigan

Mental Health Law & Policy Faculty Publications

No abstract provided.

Nonlinearity And Gestalt Therapy : Back To The Beginning, Darryl G. Kim

Loma Linda University Electronic Theses, Dissertations & Projects

Gestalt methods are explored in the context of the nonlinear view. The original Lewinian equations are updated to the current notions of nonlinear dynamics and current Gestalt Therapy theory. Ordinary differential equations and nonlinear processes are applied some of the key features of Gestalt Theory. Theoretical positions are explored and therapeutic impact considered.

Psychological Distress And Change In A Pediatric Obesity Population, Amy Rebecca Beck

Loma Linda University Electronic Theses, Dissertations & Projects

Pediatric overweight and obesity is a growing national epidemic with 15 percent of children ages 6-19 considered obese and at least 22 percent considered overweight. While there is considerable research pointing to contributing factors of obesity, there is a paucity of research which elucidates what contributes to successful intervention. Considering that by the year 2050, nearly 50 million Americans may be obese, understanding the factors delineating success of weight loss and prevention is a necessity. The purpose of this study was to utilize archival data from the LLU Growing Fit Program to evaluate the levels of psychological distress experienced by …

Institute Brief: Supporting Individuals With Autism Spectrum Disorders: Quality Employment Practices, Alan Kurtz, Melanie Jordan

The Institute Brief Series, Institute for Community Inclusion

It has been known for decades that individuals with autism spectrum disorders (ASD), including those with significant impairment or who have behaviors that others find challenging, can work when they are given appropriate supports. It is also clear that individuals with ASD can benefit from employment. Benefits include improved emotional state, greater financial gain, decreased anxiety, greater self-esteem, and greater independence. Nonetheless, employment outcomes for individuals with ASD have traditionally been poor. Even those who do find work are often underemployed or do not hold onto jobs for a long period of time.