Psychology Commons^™

Working Memory Performance: Is Subjective Measurement A Better Predictor Than Cognitive Load?, Megan Mccray

Dissertations and Theses

We rely on our capacity for rapid attention switching to conduct multiple tasks simultaneously. Leading working memory models assume that memory maintenance and attention-demanding secondary task processing cannot coincide. Any reduction in memory maintenance activities occurring due to secondary task processing leads to impaired recall. This temporal relationship is typically characterized through the proportion of time spent attending to the concurrent processing task, also called cognitive load. Although the primary determinant of forgetting in leading models, recent findings show limitations to cognitive load effects in multitasking. We investigated whether the effects of cognitive load are a byproduct of subjective task …

Does Resilience Moderate The Impact Of Children’S Experiences Of Racial And Ethnic Discrimination On Internalizing Problems?, Dahlia Abbas

Dissertations and Theses

This study’s objectives were to investigate how children’s experiences of discrimination impact the severity of their internalizing symptoms, and whether the relation between discrimination and internalizing symptom severity is moderated by resilience. It was predicted that children who had experienced more discrimination would have more severe internalizing symptoms, especially when they have low levels of resilience. Children [N=20; Mean (SD) age= 11.83 (2.50)] receiving low-cost music lessons in northern Manhattan were recruited into a larger study examining how learning music affects cognitive and emotional development. Children were interviewed in-person about experiences of discrimination because of their race/ethnicity using the Perceptions …

Mechanisms Of Value-Biased Prioritization In Fast Sensorimotor Decision Making, Kivilcim Afacan-Seref

Dissertations and Theses

In dynamic environments, split-second sensorimotor decisions must be prioritized according to potential payoffs to maximize overall rewards. The impact of relative value on deliberative perceptual judgments has been examined extensively, but relatively little is known about value-biasing mechanisms in the common situation where physical evidence is strong but the time to act is severely limited. This research examines the behavioral and electrophysiological indices of how value biases split-second perceptual decisions and the possible mechanisms underlying the process. In prominent decision models, a noisy but statistically stationary representation of sensory evidence is integrated over time to an action-triggering bound, and value-biases …

Competition Between Veridical And Perceived Location For Visuomotor Control, Fatemeh Alhabib

Dissertations and Theses

An influential proposal holds that our visual systems use different information for perception and action. Though numerous studies utilized visual illusions, in which veridical and perceptual properties of objects differ, the evidence was inconclusive and no consensus was reached. In response priming, some evidence suggests that only physical attributes of the prime stimuli control motor responses. Across two experiments, we examined the contributions of physical and consciously perceived location to response priming, using a well-known flash-lag illusion, in which a briefly flashed disk and the moving bars appearing at the same location are perceived as displaced. In all experiments, participants …

Mild Traumatic Brain Injuries And Their Implications On Changes In Event Related Potentials: A Look Into Visual Gating (P50), Katelynn M. Kozak

Dissertations and Theses

Concussions are a prevalent injury that affect a wide range of individuals. Commonly seen amongst individuals who play contact sports, there are many underlying factors that doctors and clinicians have yet to understand which include properties such as proper diagnosis standards or lasting impacts. In this study, we look at those impacts by using electroencephalographic (EEG) measures to study the changes in event related potentials (ERPs) associated with sensory gating and how this cognitive property is affected in those who have a self-reported concussion. Here we show that a visual attention and gating mechanism exists in both populations (control and …

"Do Not Disturb": A Micro-Macro Examination Of Intrusions At Work, Bing Chun Lin

Dissertations and Theses

Intrusions, or interruptions by others, are a common phenomenon in the modern workplace (Grove, 1983; Jett & George, 2003), particularly in the computing and information-technology (CIT) industry, as cross-specialty, and cross-team collaborations become more common (Beck et al., 2001). The present study examines the relationship between day-to-day intrusions (measured Monday, Tuesday, and Wednesday) and strain reactions and perceived job performance over the week (measured on Thursday) among 150 CIT employees. Using a number of resource-based theories (i.e., Conservation of Resources, Ego Depletion Model, Cognitive Fatigue Model), I hypothesize that participants experiencing more frequent intrusions on a day-to-day basis will experience …

Normative Data On The Auditory Memory Test Battery For Ages 9 Through 13 Years, Elisabeth Y. Carter

Dissertations and Theses

Auditory short-term memory (STM) is important for speech and language development and for learning new information presented auditorily. Research has shown that auditory STM ability is of a developmental nature in the 5 through 8 year age range for a variety of auditory stimuli. Many tests and subtests are available to measure auditory STM ability, however one test, the Auditory Memory Test Battery (AMTB) measures auditory memory span and memory for sequence for 5 types of stimuli.

The purpose of this study was to collect normative data on the AMTB scores of normal 9 through 13 year old students and …

Effects Of Flat Panel Display Parameters Across Three Application Areas Upon Similarity Judgments, Novia Weiman

Dissertations and Theses

A human performance experiment was conducted to investigate pixel parameter requirements for three types of flat-panel display images: an alphanumeric character, an oscilloscope waveform, and a real-world image. Subjects performed similarity judgments between an extremely high-quality image and an image composed of different levels of anti-aliasing and pixel width-plus-pixel separation (pitch). It was found that the effect of pitch had greater influence on perceived image quality for the alphanumeric character and oscilloscope waveform than for the real-world image. The results of this research provide empirical evidence showing that the pixel pitch requirements for flat-panel systems that are used to display …

Beyond Difference Scores: Testing Models Of Speed Of Information-Processing Using Confirmatory Factor Analysis, Gary A. Uhland

Dissertations and Theses

This study has two parts: Part I discusses the limitations of difference scores and exploratory factor analysis for representing speed of information-processing stages in the context of a reanalysis of a study by Vernon (1983). Vernon interpreted the differences between objectively measured reaction times on various simple cognitive tasks as components of speed of information processing. Correlations were calculated among these differences and subjected to exploratory factor analysis. The factors obtained from this analysis were interpreted by Vernon in terms of short-term and long-term memory processing constructs. The use of difference scores, however, implies an additive model allowance for random …

Eye Contact Perception At Distances Up To Six Meters, Daniel L. Scarl

Dissertations and Theses

Common experience suggests that most people can tell whether they are being looked at by another person who is about 8 m away. However, the results of past experiments, which used distances of no more than about 3 m, have implied that this cannot be done if the person looked at (Receiver) judges only by the iris-sclera configuration of the person looking (Sender). This is true even if eye contact is defined simply as identifying on-face gazes (FGs). It has been suggested that in everyday experience eye contact is accompanied by cues other than iris position, and that these non-iris-position …

Scotopic And Photopic Thresholds : A Dependent Variable For The Mccollough Effect, Marilyn Murphy

Dissertations and Theses

Previous attempts to adequately evaluate orientation-specific colored aftereffects (Mccollough Effects) have thus far been unsuccessful in yielding quantitative measures of relative strengths of the effects. Similarly, little success has been shown in previous attempts to establish what level of illumination is necessary in order to evoke the aftereffects. The present study sought to determine (a) whether threshold measurements could serve as adequate, quantitative dependent variables of the Mccollough Effects, (b) whether photopic illumination was necessary in order to evoke the aftereffect. It was predicted that the greater the number of inspection trials, the dimmer the illumination level could be in …

Parameters Of Mental Rehearsal, Timothy K. Kelly

Dissertations and Theses

An extensive review of the literature of the phenomenon of mental rehearsal (MR), or the act of imagining oneself performing a behavior in anticipation of eventually doing so, indicated that MR could facilitate improved performance on varied motor skills. An experiment which drew from previous studies in MR, incorporated suggestions from.the literature, and used a novel measurement task was conducted. The present study compared MR to physical practice (PP), no practice (NP), mental rehearsal/physical practice combined (MR/PP), and interference mental rehearsal (I). Five groups of twenty subjects (N=100) played a hand-held video computer game in a pre- and post-test design. …

One-Third Octave Band Augmented Speech Discrimination Testing For Cochlear Impaired Listeners, Dianne Heath

Dissertations and Theses

The purpose of this study was to investigate the effects of a 500 Hz and 3,150 Hz one-third octave band augmentation on the speech discrimination ability of listeners with cochlear hearing impairments. The results were analyzed both within the experimental group of subjects included in the present study and in comparison with data collected on a control group of normal hearing subjects reported earlier.

The Effect Of Causal Attribution And Self-Evaluation On Mood, William N. Werner

Dissertations and Theses

The present study was designed to test the causal locus hypothesis, and to develop and explore the self-evaluational hypothesis. The causal locus hypothesis is based on attribution, which is a person's perception of cause. The hypothesis holds that persons making internal attributions (self-caused) for failure end external attributions (not self-caused) for success experience more negative postoutcome mood than persons making external attributions for failure and internal attributions for success. The hypothesis was derived from major theories or attribution, but was not experimentally tested until recently (Wollert et al., 1981).

Perspectives On Speechlessness : A Case Study, Michelle Alexander Carlson

Dissertations and Theses

This study addresses a problem of speech disruption as an individual abruptly and without explanation stops speaking to those around her. The matter for investigation involves the meaning this event has for those who are closely involved with this individual either in a practical day to day way or in a continuing relationship.

A Study Of Age And Sex-Related Differences In The Perception Of Emotional Stimuli, Nancy Mellor Canizio

Dissertations and Theses

In a tachistoscopic perception task, adult males in the Fels Research Institute's longitudinal population (Kagan and Moss, 1960) were found to have a higher recognition threshold for pictures depicting dependency scenes than adult females. The female subjects had a higher recognition threshold for aggressive scenes than the males.

The present study was designed to further compare male and female perception of dependent and aggressive stimuli by including a developmental component to test if the perceptual differences vary with age. A benign or neutral stimulus category was added to aid in determining direction of any resulting differences: i.e., heightened perception or …

Role-Taking And Behavior, Jane Wynne Uphoff

Dissertations and Theses

The present study examined the relationship between the cognitive skill of role-or perspective-taking and naturally occurring behavior of behaviorally disordered children. Twenty-six boys, aged five years, nine months to twelve years, two months were tested and observed at their treatment facility. It was predicted that children who could take the perspective of others would prefer peer to adult interaction, would more likely give positive attention to their peers and would be more likely to use effective language than their non perspective-taking peers. These and related hypotheses were examined by observing each participant's interactive behavior for 36 minutes distributed over three …

Toward A Measure Of Correspondence In Relational Perceptions In Marital Dyads, Deborah Anne Coker

Dissertations and Theses

In order to assess a component of communication in interpersonal relationships, an instrument was developed to determine the correspondence in relational perceptions between partners in a marital dyad. The current study focuses on the levels of awareness spouses exhibit regarding phenomenological perceptions of themselves, their partners and the status of their dyadic system.

The Relationship Of Brain Hemisphere Orientation To Wisc-R Subscale Scores, Robin Diane Thomas Hayden

Dissertations and Theses

Because there is a growing amount of contradictory evidence concerning the relationship of WISC-R subscale scores to hemispheric orientation, the present study examined the validity of the WISC-R subscale scores as indicators of individual hemispheric orientation.

The present study hypothesized a significant relationship between Verbal-Performance scale score discrepancies and hemispheric orientation as assessed by conjugate lateral eye movements. This study also hypothesized that subjects with a right hemisphere orientation would score higher on t~ block design, picture completion, and object assembly subtests than would subjects with a left hemisphere orientation.

One-Third Octave Band Augmented Speech Discrimination Testing For Normal Hearing Listeners, Nancy Marie Bowen

Dissertations and Theses

The purpose of this study was to investigate the effects of a 500 Hz and 3150 Hz one-third octave band augmentation on the speech discrimination ability of normal hearing listeners and whether such effects vary with signal presentation level. The augmented portion of monosyllabic words was systematically varied from 5-55dB above the intensity level of the unfiltered version of the words and presented simultaneously to one ear.

Hemisphere Side Of Damage And Encoding Capacity, Margaret Ellen Davis

Dissertations and Theses

This study was designed to examine whether normal information processing does engage both hemispheres of the brain regardless of sensory channel (i.e., auditory or visual), and whether an opportunity for dual encoding (verbal and visual) was advantageous for patients with unilateral brain damage. It compared memory for verbal material presented in the visual and auditory modalities among three groups: right hemisphere brain damaged stroke patients (RBD), left hemisphere brain damaged stroke patients (LBD), and neurologically intact control subjects.

Towards A Measure Of Superior-Subordinate Perceptual Correspondence And Its Relationship To The Performance Appraisal, Elizabeth Duane Vergeer Crist

Dissertations and Theses

The purpose of the present study was to determine what, if any, relationship existed between the correspondence of perceptions between superior-subordinate work dyads and the superior's rating of the subordinate's work performance.

Speech Intelligibility As A Function Of The Propositionality Of Background Noise, Gail Swanstrom

Dissertations and Theses

The purpose of this investigation was to measure the ability of young normal hearing listeners to perceive speech in the presence of a background noise which varies in the relative intensity of its semantic content. The Speech Perception in Noise test was mixed with a two-component competing noise complex in which the narrative-to- speech noise ratio varied in 2 dB increments from -2 dB Na/SpN to +8 dB Na/SpN. These stimuli were presented at an overall +8 dB signal-to-noise ratio to thirty young normal hearing adults through the soundfield system. The differences between the mean error scores and standard deviations …

A Comparison Of Three Measures Of Waking Fantasy, Carey Sue Edney

Dissertations and Theses

This project compared three techniques of assessing waking fantasy, or daydreaming. The Thematic Apperception Test (TAT), the Imaginal Processes Inventory (IPI), and time-sampled ongoing mentation reports (OMR) were the three measures employed. Seven qualities were compared, as measured by the three methods, using a multitrait-multimethod correlation matrix. Neither extensive convergent nor extensive discriminant validity was demonstrated among the three measures. This suggests that one should use caution in comparing research findings which utilize different measures of waking fantasy.

Individual Differences In Imaginal And Verbal Information Processing Abilities, Joan Marie Anderson

Dissertations and Theses

The present research is based on the theory that there are two major modes of consciousness, verbal and imaginal, which are controlled by the left and right hemispheres, respectively. This project was concerned with the relationship between these modes of consciousness and the measures employed in this study. The measures employed were an ongoing mentation report (OMR), a paired-associate learning (PAL) task, the Betts vividness of imagery questionnaire, the Gordon test of imagery control, and the visual imagery scale of Imaginal Processes Inventory (IPI). EEG and EOG measures were recorded during the OMR, and lateral eye movement was taken as …

A Psychometric Evaluation Of The Bicycle Drawing Test And The Establishment Of Preliminary Norms, Mary Lee Nichols

Dissertations and Theses

The main purpose of this study was to examine the psychometric characteristics of the Bicycle Drawing Test. The 20-point scoring criterion was evaluated, and the preliminary norms were established.

The Bicycle Drawing Test is an easily administered free-style drawing task that has been found to be a useful addition to a neuropsychological test battery. It provides a sample of visuopractic functioning involving the formation of a perceptual construct, a motor response, and a spatial component.

A Critique Of Bandler And Grinder's Method Of Mapping Representational Systems, Leslie E. Goldmann

Dissertations and Theses

People perceive the world in their own terms: our use of language reflects our perceptions. The way in which we perceive the world and the words we use to reflect that perception Grinder and Bandler (1976) call a "representational system." The authors isolate three types of representational systems, visual, kinesthetic, and auditory, and they present a technique for mapping these systems. These authors state that a sensory preference profile can be mapped accurately and reliably via an individual's use of language. For example, words such as "clear," "see" and expressions of the kind "I get a picture" would connote a …

An Investigation Of The Consistency Of Stimulus Overselection Of Autistic Children, Patricia O'Meara Walker

Dissertations and Theses

A review of the literature indicated that not all of the research in the area of overselectivity of autistic children has been in agreement. It does seem evident that some autistic children overselect. This could be the result of an attentional factor or a modality preference. This has important implications for the education of autistic children. In the light of the inconsistency of autistic children's reactions to sensory stimuli (Hermelin and O'Connor, 1970; Wing, 1972; Koegel, 1976) this investigator believe·d there was a need to determine if overselection is consistent before referring to the overselected modality as a preferred modality …

Intelligence And Nonintelligence Factors Contributing To Scores On The Rorschach Prognostic Rating Scale, Anneke P. Hathaway

Dissertations and Theses

Correlation between the RPRS total and WAIS FSIQ showed that approximately 43% of the variance in the RPRS total can be accounted for by the variance in the FSIQ. Verbal IQ is not significantly higher correlated with the RPRS total than the Performance IQ (p < .10). Factor analysis of the 6 RPRS subscores resulted in 2 factors. Subsequent factor analysis of the 6 RPRS subscores plus FSIQ and the factor analysis of the 6 RPRS subscores plus PIQ and VIQ showed the first factor to be an intelligence factor accounting for 85% of the common variance. The RPRS variables FL, FM, M and Sh loaded on this factor. The second factor was a nonintelligence factor accounting for 15% of the common variance. Small m is clearly the main determinant of this factor followed by Sh. In addition, the results of 2 exploratory factor analyses are discussed. The first exploratory factor analysis involved 23 variables, namely the 6 RPRS subscores, RPRS total, the 11 WAIS subscales, FSIQ, VIQ, PIQ, VIS and OABD. The second exploratory analysis involved 17 variables, namely the 6 RPRS subscores and the 11 WAIS subscales.

Effects Of Verbal And Pantomime Stimulus Input On The Short Term Sequential Recall Of Aphasic Adults, Lauryl Suzanne Ivers Grotting

Dissertations and Theses

The question posed in this investigation was: Which stimulus input mode, verbal, pantomime, or combined verbal and pantomime, is more effective in facilitating short term sequential recall of language material with aphasic adults?