Cognition and Perception Commons^™

An Evaluation Of Various Safmeds Procedures, Shawn Patrick Quigley

Dissertations

Lindsley developed Say-All-Fast-Minute-Every-Day-Shuffled, or SAFMEDS, in the late 1970’s to enhance the typical use of flashcards (Graf & Auman, 2005). The acronym was developed specifically to guide the learner’s behavior when using flashcards. A review of SAFMEDS research indicates it has been utilized with children, college students and older adults with and without disabilities. The literature also indicates the SAFMEDS procedures used are not well documented or have multiple variations limiting practitioners’ ability to know what procedure to use and when. Furthermore, future SAFMEDS research is hampered by variations in the independent variable (i.e., SAFMEDS). The purpose of this study …

Dynamics Of Perceptual Organization In Complex Visual Search: The Identification Of Self Organized Criticality With Respect To Visual Grouping Principles, Attila Jozsef Farkas

Dissertations

The current project applies modern quantitative theories of visual perception to examine the effect of the Gestalt Law of proximity on visual cognition. Gestalt Laws are spontaneous dynamic processes (Brunswik & Kamiya, 1953; Wertheimer, 1938) that underlie the principles of perceptual organization. These principles serve as mental short-cuts, heuristic rule-of-thumb strategies that shorten decision-making time and allow continuous, efficient processing and flow of information (Hertwig & Todd, 2002). The proximity heuristic refers to the observation that objects near each other in the visual field tend to be grouped together by the perceptual system (Smith-Gratto & Fisher, 1999). Proximity can be …

An Electrophysiological Examination Of Adhd-Associated Symptoms And Selective Attention In Adults, Erica Diane Prentkowski

Dissertations

A main component of Attention-Deficit/Hyperactivity Disorder (ADHD) is a deficit of inattention. This deficit causes impairment for both children and adults in a variety of settings including school and work. The current study examined auditory selective attention in a community sample of adults. It was the aim of this project to examine possible differences in selective attention for adults with high levels of ADHDassociated symptoms, when compared to adults with low levels of ADHD-associated symptoms, including conditions under which these differences may be an advantage. Specifically, it was expected that adults with high ADHD-associated symptoms would benefit from the high …

Evaluating The Effects Of A Job-Aid For Teaching Visual Inspection Skills To University Students, Candice M. Jostad

Dissertations

Visual inspection is the primary method of data analysis used in behavior analysis. Thus, it is important that behavior analysts have the skills necessary for accurate visual inspection. Research has shown that visual inspection can sometimes be unreliable, which has broad implications for the evaluation of treatment effects using this method. Traditional lectures have been shown to be ineffective in teaching visual inspection skills to a satisfactory level, although improvements in visual inspection have been accomplished using statistical methods and aids such as celeration lines superimposed on graphs. However, these methods are not effective when the aids are removed and …

Assessing The Effects Of A Rectangular Rapid-Flashing Beacon On Vehicle Speeds Along A Four-Lane Divided Highway, Michelle Van Wagner

Dissertations

In 2008, nearly 31% of vehicle fatalities were related to failure to adhere to safe vehicle speeds (National Highway Traffic Safety Administration (NHTSA), 2009). Two studies were conducted to evaluate the effects of a Rectangular Rapid-Flashing Beacon (RRFB) triggered by excessive speed on vehicle speed using a combined alternating treatments and reversal design. Experiment 1 assessed the RRFB's impact on speeds as compared to baseline conditions only. Experiment 2 compared the RRFB to two standard beacon configurations. Both experiments were conducted at the same site during approximately the same time period and both employed the same data collection methodology. The …

Trial And Error, Delayed Prompting, And Reinforcement Of Prompted Responses In Teaching Receptive Identification Of Pictures, Kristen Lynn Gaisford

Dissertations

Three strategies to train receptive identification of pictures were compared: (a) trial and error, (b) delayed finger-point prompt followed by a reinforcer, and (c) delayed finger-point prompt followed by the spoken word, "good". These three strategies were compared using a multi-element design, assessing the performance of four children, ranging from two to four years of age, selected from a classroom that provides services to children with Early Childhood Developmental Delays (ECDD). Two children mastered the receptive identification of pictures at the same rate regardless of the strategy. For the remaining two participants, the rate of mastery was the same for …

Improving Reading Fluency And Comprehension In Elementary Students Using Read Naturally, Rebecca Arvans

Dissertations

Difficulty learning how to read is a risk factor for school failure, low grades, behavior problems, juvenile delinquency, truancy, unemployment, jail time, and substance abuse. Reading difficulties are common in the educational setting, afflicting anywhere from 20-40 percent of students. Read Naturally is a computer-based reading program which targets the third "big idea" (i.e„ accuracy and fluency with reading). The current study assessed the efficacy of the Read Naturally program in second through fourth grade elementary students in a public elementary school. Additionally, this study assessed whether improving reading abilities resulted in changes in classroom behavior problems or self-esteem. Eighty-two …

Comparing The Accuracy Of Performing Digital And Paper Checklists Using A Feedback Package During Normal Workload Conditions In Simulated Flight, William Gene Rantz

Dissertations

This study examined whether pilots completed airplane digital or paper checklists more accurately when they received post-flight graphic and verbal feedback. Participants were 6 college student pilots with instrument rating. The task consisted of flying flight patterns using a Frasca 241 Flight Training Device which emulates a Cirrus SR20 aircraft. The main dependent variable was the number of checklist items completed correctly per flight. An alternating treatment, multiple baseline design across pairs with reversal, was used. During baseline, the average percent of correctly completed items per flight varied considerably across participants, ranging from 13% to 57% for traditional paper checklists …

Health Anxiety And Cognition: Chronic Awareness Of Health Concerns Or Situational Activation Of Latent Dysfunctional Assumptions About Illness?, Desmon Craig Mitchell

Dissertations

Rationale: This study investigated if health anxious individuals have chronically aroused illness-related concerns or if these concerns remain latent, only to be activated when first primed by illness-related stimuli. To test these alternatives this study examined whether participants, with varying levels of health anxiety, differed as to their (a) performance on an emotional Stroop task that included health-related words, (b) memory tasks (free recall and recognition tasks), and (c) the participants' dream content, after either being exposed, or not exposed, to an illness-related trigger. Hypotheses: If illness concerns are chronically activated in health anxious individuals, then participants will perform worse …

Disruptive Effects Of Aβ Oligomers To The Radial-Arm Maze Performance Of Rats, Kineta Lynn Morgan-Paisley

Dissertations

Converging lines of research have implicated a causal relationship between oligomers of amyloid-β and the cognitive impairments associated with Alzheimer's disease (AD); however, very few studies have provided direct experimental evidence of this relationship and none of those studies have used an established model of working memory. The present study used an established model of working memory, the radial-arm maze, to examine the effects of amyloid-β oligomers on the memory of two groups of rats. The experimental group received ICV injections of the culture media (CM) of Chinese Hamster Ovary (CHO) cells transfected with a human mutation of APP containing …

The Effects Of Acute Nicotine Abstinence On Vigilance And Verbal Memory In Non-Diagnosed Smokers, David W. Ayer

Dissertations

Research has shown a differential prevalence of smoking in the schizophrenic population compared to other psychiatric and non-diagnosed populations. The three most commonly investigated reasons for this differential prevalence in schizophrenics are: the self-medication hypothesis, side effects hypothesis, and sociological hypothesis. The self-medication hypothesis which proposes that schizophrenics smoke at a higher rate to ameliorate cognitive deficits is the most substantiated by the research. Of current interest is the possible role of nicotine in improving performance on vigilance and verbal memory, the two areas shown to be most related to impaired social functioning in schizophrenics. It is difficult to make …

Audio Narration And Reading Ability In Programmed Instruction, Wendy Jaehnig

Dissertations

This study compared the effects of audio, textual, and audio-textual narration in a programmed instructional module on the performance of individuals with different reading abilities. One hundred eighty-four college students were randomly assigned to audio, textual, or audio-narration. Dependent variables were posttest score and instruction completion time. An ANCOVA was used to analyze the results, with ACT reading test scores as the covariate. No differences were found between the groups on posttest scores (p = .56) or completion time (p = .90), and there was no interaction between narration type and reading score for either dependent variable. Audio …

Investigating The Effects Of Real-Time Visual Feedback On Computer Workstation Posture, Sigurdur Oli Sigurdsson

Dissertations

The purpose of this study was to examine the effects of a package intervention that included discrimination training, real-time visual feedback, and self-monitoring on postural behavior at a computer workstation in a simulated office environment. A total of 21 participants were screened for participation, and eight of those participated throughout the study. A non-concurrent multiple baseline design across participants was used to assess the effects of the interventions across three postural variables. Following an information-only phase, participants were exposed to the intervention for the lowest stable postural variable. For most targeted postural variables, the intervention implemented in this study led …

Analysis Of Group Differences And Predictors Of Hooper Visual Organization Test Scores, Michael R. Devries

Dissertations

The Hooper Visual Organization Test (VOT) is described in the manual as a screening instrument that measures the ability to organize visual stimuli (Hooper, 1983). The VOT is identified as being particularly sensitive to neurological impairment. Studies to determine the criterion and construct validity of the VOT have examined its usefulness in distinguishing between individuals with neurological impairment from those with other disorders. Few studies have included samples from normal, psychiatrically impaired, and neurologically impaired populations in determining the VOT's usefulness in identifying neurologically impaired individuals. Furthermore, as neuropsychology has moved away from the understanding of neurological impairment as a …

The Phenomenon Of Woman-On-Woman Abuse And Its Relationship To Gender Profile And Personal Experiences Of Women, Deborah Johnson Spence

Dissertations

Purpose of the Study. Female-on-female aggression is often inferred, or drawn from studies conducted with children or males. Little or no information is available that reports behaviors perceived as mistreatment or abuse among women. The purposes of this study were to investigate (a) behaviors demonstrated by women that women consider abuse or mistreatment; (b) the extent to which these perceptions of abuse/mistreatment were related to gender profiles; and (c) the extent to which personal experiences as victims or perpetrators of abuse were related to age, race, and education.

Method. This study used the survey research method in which questionnaires …

Social Anxiety: Attentional Bias In Reaction To Emotional Faces Before And After Participation In A College Level Public Speaking Course, Scott Walter Maieritsch

Dissertations

This study was designed to examine the effectiveness of a semester-long public speaking course in reducing the self-reported levels of communication anxiety and social anxiety among college students enrolled in such a course. The current study also sought to replicate and extend a recent line of research that has demonstrated that highly socially anxious individuals show an attentional bias away from emotional faces under conditions of social-evaluative threat. The current study extended this line of research by conducting the same reaction time procedure with participants in a pretest/post-test design. The project was designed to determine if groups (rating high vs. …

A Case Study Comparison Of Brief Group Treatment And Brief Individual Treatment In The Modification Of Denial Among Child Sexual Abusers, John F. Ulrich

Dissertations

Problem Statement. O'Donohue and Letourneau (1993) demonstrated success in modifying denial among child sexual abusers with brief group treatment when probable incarceration existed for subjects who did not admit. This current study replicated and enhanced their treatment model while omitting the adverse legal consequences for subjects remaining in denial. Brief individual therapy was used as a comparison treatment condition. Factors theoretically contributing to denial were explored.

Methodology. Ten subjects were evaluated as individual case studies in two non-randomly assigned treatment conditions. Five subjects received nine group therapy sessions and five received nine individual therapy sessions. Subjects were selected from …

Stressors That Affect Psychotherapists' Therapeutic Functioning, Donald E. Wallace

Dissertations

Problem. The purpose of this study was to look at the stressors psychotherapists experience in their work to determine those that are positive and those that are negative. In addition, this study looked at stressors viewed as positive and negative by several subgroups of psychotherapists based on personality characteristics, gender, age, educational training, level of experience, preferred therapeutic school, and marital status.

Method. The Stressors Check List. Mvers-Briaas Type Indicator. and a demographic sheet were given to a sample of 244 psychotherapists employed at 12 comprehensive mental health centers in the State of Indiana. Statistical analyses included t-tests, one-way …

A Proposed Paradigm Of Personality As Explored Through The Relationship Between Moral Reasoning And Cognitive Flexibility, Karen I. Madgwick

Dissertations

Problem. Personality, a construct representing the dynamic integration of the individual, remains complicated, both in theory and in research. The purpose of this study was to explore a conceptual paradigm of personality through the relationship between cognitive flexibility and moral reasoning. Researchers had not looked at the relationship between cognitive flexibility, as measured by the Stroop Color and Word Test, and moral reasoning, as measured by the Defining Issues Test (DIT). This study focused on the relationship between cognitive flexibility and moral reasoning. It looked for more than an understanding of the relationship, however, thus affording beginning research in the …

Feminine Values, Interpersonal Orientation, And The Evolution Of The Female Identity In College Students, Barbara Jones Robinson

Dissertations

Problem. The importance of interpersonal issues to female identity achievement has been noted by a number of researchers (e.g., Gilligan, 1982; Bardwick, 1970, 1971, 1972, 1979; Thorbecke & Grotevant, 1982). This study attempted to determine what degree of compatibility existed between higher degrees of identity resolution in females, and an interpersonal and values orientation reflecting a balance between self-achievement and mutually rewarding interpersonal achievements. It was hypothesized that the ideal balance represented by the concept of interdependence would be more closely related to higher identity scores than would autonomous self-achievement or traditional achievement-through-others.

Method. The study was based on data …

The Relationship Of Self-Concept, Sex, Age, Major, Anxiety, Mathematics Background, And Mathematics Ability To The Level Of Mathematics And Statistical Anxiety Among College Juniors, David John Maysick

Dissertations

Problem. One's choice of career has significant effect upon one's future life in terms of earning potential and social interaction. Mathematics/statistical anxiety and the mathematics avoidance often accompanying such anxiety, can influence career choice, causing otherwise talented people to limit their future. The purpose of this study was to determine from selected variables--particularly self-concept--which, if any, were related to the problem of mathematics and/or statistical anxiety.

Method. The statistical sample used was 350 juniors. Stratification was by degree of mathematics content in subject's major field of study. For the study, subjects had to be in the same major category as …