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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Stimulus Matters: Effects of Familiarity versus Novelty

Buonomano, Lisa Cristine 28 April 2008 (has links)
The ability to suppress a prepotent response is a crucial component of cognition that begins to develop during infancy and peeks during preschool. As part of understanding how one develops inhibitory control, learning about what conditions may help or hurt task performance is of great interest. The purpose of this project was to study the effects of familiarity and novelty on inhibitory control. Thirty-five preschoolers between two and five years of age were tested in four different versions of the Dimensional Change Card Sort (DCCS). Performance was no different among standard, 2D-familiar, and 3D-familiar conditions. When comparing novel with the standard condition, children performed worse (37% and 68% respectively). Findings support the attentional inertia hypothesis. An exploratory analysis on temperament was also investigated. Children who scored higher in effortful control performed better in the 2D-familiar condition. / Master of Science
2

Inhibitory control training and disruptive behaviour in young people

Green, Joanna January 2017 (has links)
Objective: Adolescence is a period of crucial neuropsychological development. Executive control functions (ECF) develop during adolescence and are constructs involving the planning, initiation, and regula¬tion of goal-directed behaviour. ECFs include impulse control critical for behavioural regulation. Training approaches for improving inhibitory control (IC) and impulsivity in young people (YP) are in their infancy, although some positive effects have been found in adults. This research aimed to test the hypothesis that IC intervention would improve IC and impulsivity (direct, near and far-transfer effects) and improve behavioural-control (mid and far-transfer effects) in YP. Methods: Six healthy YP, aged 11-16 years, attending mainstream education, participated in this single-case, multiple-baseline experimental design. The participants completed assessments at three phase-change points and completed continuous measures of their own impulsivity and behaviour goals. Each participant completed a baseline and intervention phase of differing randomised lengths within the 20 day study. The data were analysed visually using non-parametric tests of difference, randomisations tests and indices of reliable change. Results: IC and impulsivity were not observed to improve with intervention based on direct and far-transfer effects and limited improvement was observed based on near-transfer effects. Overall, behavioural control was not observed to improve with intervention based on near and far-training effects, but limited improvements were observed for some individual participants. Conclusion: The intervention was not observed to be effective in reducing IC or improving behavioural control overall, with very limited effects found in individual cases, which are discussed in directions for future research.
3

The Effects of Stress and Placebo Alcohol on Cognitive Activation and Inhibitory Control in Male Problem Gamblers and Problem Gamblers with Alcohol Use Disorder

Steinberg, Lindsay 15 February 2010 (has links)
This experiment studied relapse by assessing the separate/combined effects of two instigators: alcohol cues and stress on the salience of alcohol/gambling target stimuli and inhibitory control in twelve male problem gamblers and twelve male comorbid drinker-gamblers. Our study day consisted of two test sessions. Subjects received alcohol (non-alcoholic beer) and/or stress (uncontrollable noise) in a counterbalanced method. Hypotheses were tested using computer-based tasks, including the modified Stroop, gambling-word Shift Task, and the conventional and modified Stop-Signal Tasks. Stimuli with incentive value divert attention (i.e., are salient) selectively based on their clinical relevance to the subject and the nature of the instigating factor – stress (expected negative reinforcement) vs. anticipation of alcohol (expected positive reinforcement). Results suggest that alcohol cues and stress have differing effects on incentive salience, and disinhibit behaviour in both pathological populations. These findings have the potential to facilitate treatment and improve understanding for relapse prevention in these subjects.
4

The Effects of Stress and Placebo Alcohol on Cognitive Activation and Inhibitory Control in Male Problem Gamblers and Problem Gamblers with Alcohol Use Disorder

Steinberg, Lindsay 15 February 2010 (has links)
This experiment studied relapse by assessing the separate/combined effects of two instigators: alcohol cues and stress on the salience of alcohol/gambling target stimuli and inhibitory control in twelve male problem gamblers and twelve male comorbid drinker-gamblers. Our study day consisted of two test sessions. Subjects received alcohol (non-alcoholic beer) and/or stress (uncontrollable noise) in a counterbalanced method. Hypotheses were tested using computer-based tasks, including the modified Stroop, gambling-word Shift Task, and the conventional and modified Stop-Signal Tasks. Stimuli with incentive value divert attention (i.e., are salient) selectively based on their clinical relevance to the subject and the nature of the instigating factor – stress (expected negative reinforcement) vs. anticipation of alcohol (expected positive reinforcement). Results suggest that alcohol cues and stress have differing effects on incentive salience, and disinhibit behaviour in both pathological populations. These findings have the potential to facilitate treatment and improve understanding for relapse prevention in these subjects.
5

INHIBITORY CONTROL PERFORMANCE AS A FUNCTION OF PREADOLESCENT ANXIETY AND RESTING-STATE NEUROPHYSIOLOGY

Unknown Date (has links)
The aim of this study was to further examine the relationship between anxiety, inhibitory control (IC), and brain functioning (electroencephalogram) in a critical age-range for social and emotional development (8-12-year-olds). Depression was a secondary focus but was included in the analyses given the common anxiety/depression overlap. Additionally, the participants (N = 42) were assigned to 4 weeks of either an emotional training program (Emotional gFocus), a neutral training program (Neutral gFocus), or a waitlisted control and were tested using cognitive, neurophysiological, and mood measures. Hierarchical regression models revealed that IC accuracy scores were significantly and negatively related to anxiety levels as indicated by the Screening For Child Anxiety Related Disorders (SCARED), as well as depression levels (using the Child Depression Inventory (CDI)), controlling for age and gender. Additionally, increased resting-state right lateral frontal alpha asymmetry was predictive of increased anxiety as well as depression levels. To evaluate the intervention effects, a series of Multivariate Analyses of Covariance (MANCOVA) and contrast tests were conducted to determine if group differences existed from pre-to-post for any of the measures of interest. Overall, the emotional and neutral training conditions showed similar reductions in anxiety and depression compared to the waitlist condition. Both the emotional and neutral conditions also facilitated significant improvements in IC accuracy compared to the control. Minimal pre-to-post power and asymmetry changes occurred in frontal and parietal regions; however, a lateral frontal leftward activity shift was found in the emotional training group. These findings further demonstrated a relationship between IC and anxiety and showed preliminary evidence that training IC has the potential to mitigate negative emotional functioning in adolescents. Future research is necessary to determine the importance of emotional training versus neutral as well as whether longer training intervals will be needed to facilitate a long-term impact. / Includes bibliography. / Dissertation (Ph.D.)--Florida Atlantic University, 2020. / FAU Electronic Theses and Dissertations Collection
6

Influence of Emotion Processing and Affect Intensity on the Engagement of Inhibitory Control in Young Adults with Attention-Deficit/Hyperactivity Disorder

Salander, Zachary 29 October 2019 (has links)
How individuals process different affective cues, as well as how intensely they experience different emotions, may influence how efficient they are at engaging inhibitory control. To date, it is unclear if these influences differ among young adults with and without ADHD. The current study tested the variation in young adults’ inhibitory control to three affective cues (i.e., fear, happy, and neutral) in an Emotion Go/Nogo task. Results suggest better inhibitory control in response to more distinct cues (i.e., fear Nogo/happy Go). The order in which cues were presented also mattered, such that participants displayed enhanced inhibitory control when first presented with expressions that had similar valence. This task order was particularly helpful for inhibitory control engagement among young adults with ADHD. Furthermore, self-report measures suggest that young adults with ADHD were associated with higher levels of affect intensity. However, no additional relations were found in the processing of affective cues, affect intensity, and inhibitory control between young adults with and without ADHD. Results provide evidence for how affective cues and contexts differentially influence behavioral responses in young adults. Individuals with and without ADHD also appear to differ in the intensity with which they experience different emotions. Overall, the current study provides a framework for how to further explore how emotional cues and affect intensity influence inhibitory control.
7

Fatigue and Inhibitory Control: A Test of Key Implications of an Emerging Analysis of Behavioral Restraint Intensity

Mlynski, Christopher 12 1900 (has links)
Agtarap, Wright, Mlynski, Hammad, and Blackledge took an initial step in providing support for the predictive validity of a new conceptual analysis concerned with behavioral restraint - defined as active resistance against a behavioral impulse or urge. The current study was designed to partially replicate and extend findings from their study, employing a common film clip protocol and a procedure for inducing low- and high levels of fatigue. Analyses indicated that key cardiovascular (CV) responses rose with the evocativeness of the film clip among low fatigue participants but fell with the evocativeness of the film clip among high fatigue participants. This is consistent with the prediction that high fatigue participants would put forth more restrain intensity than low fatigue participants when confronted with the less evocative clip, but less restraint intensity than low fatigue participants when confronted with the more evocative clip. Behavioral restraint performance - quantified as duration of facial non-neutrality - was also consistent with predictions, being impaired by fatigue under high- but not low evocativeness conditions. Findings support the broad theoretical suggestion that fatigue influence on behavioral restraint is multifaceted, dependent on the perceived magnitude of the impulse or urge experienced and the importance of resisting it.
8

Individual Differences in Preschool Aged Children's Inhibitory Control: Adding Borders to the Day/Night Task

Ross, Alleyne Patricia 01 July 2016 (has links)
Inhibitory control is vital to typical development and matures rapidly throughout early childhood. Inhibitory control deficits are seen in both autism spectrum disorders and attention-deficit/hyperactivity disorder and, along with other executive functions, inhibitory control contributes to school success. The tasks used to measure and stress these skills in children have not been fully explored. Even given the cognitive development levels of young children, the current inhibitory control tasks for preschoolers are not completely comparable to the tasks used with adults. For my thesis study, I added a mixed condition to the day/night inhibitory control task in preschool children using methodological design features from the Dimensional Change Card Sort (DCCS) Task. This addition allowed the day/night task to serve as a better analogue to the Stroop task, which is an inhibitory control task commonly used with adults. In addition, electroencephalogram (EEG) illuminated the neural patterns of the task in children at age four. This study demonstrated that the borders condition of the day/night task is an appropriate executive function task that can be used with preschool aged children. / Master of Science
9

Examining the Association Between Executive Functioning and Eating Behaviors in Adolescents From Low-Income Backgrounds

Shields, Clarissa 22 April 2020 (has links)
No description available.
10

The Role of Dispositional Mindfulness in the Development of Emotion Recognition Ability and Inhibitory Control from Late Adolescence to Early Adulthood

Dawson, Glen C. 02 September 2020 (has links)
No description available.

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