Psychology Commons^™

Intermittent Sucrose Access: Sweetness Versus Calories, Jarret Folmer, Rudy Eikelboom

Theses and Dissertations (Comprehensive)

Nondeprived rats receiving every 3^rd day access (E3DA) to 4% sucrose solution consume more sucrose on access days compared to rats with everyday access (EDA). Rats receiving EDA or E3DA to 16% sucrose do not consume different amounts, but if placed on every 2^nd day access (E2DA) to 4% sucrose E3DA-group rats consume more than EDA rats (Eikelboom, Hewitt, & Adams, 2022). E3DA affects rats’ value of sucrose but effects appear hidden with high sucrose concentrations. Valyear and Eikelboom (2021) suggested that calorie ceilings limit E3DA-induced consumption with high sucrose, but this ceiling could also be caused by …

Decipher The Effect Of Gamification In Harnessing Boredom And Improving Performance, Zhuoyi Zhao

Theses and Dissertations (Comprehensive)

My thesis investigates the effectiveness of gamification in harnessing boredom and improving performance in a repetitive work process. In video games, “loot” rewards are unpredictable, intermittent gains used to motivate players to repeat boring actions. In a 2 X 2 experiment, I examine how loot rewards in point form may impact 1) disengagement, which is an immediate outcome of boredom, and 2) performance in settings where the points have and do not have cash value, respectively. More specifically, I manipulate the level of point reward unpredictability (fixed versus loot) and whether point rewards have cash value (absent versus present).

In …

Visual Perception And Action In Reaching During Upper Limb Obstacle Avoidance, Nondon Chakraborty

Theses and Dissertations (Comprehensive)

During everyday activities, people reach to specific objects with their hands and avoid obstacles. For people to move successfully through an obstacle gap, it is necessary to be able to accurately perceive the actions that the surroundings afford and adjust hand movements accordingly. Reaching behaviours, including planning (perception) and execution (action), depend on visual information. This study aimed to understand and detect the differences between perceptual judgment and actual performance of both hands during a reaching task at the time of obstacle avoidance by using a hand-scaled approach. Participants were young adults (male (n=7) and female (n=10) aged 18 to …

Narcissistic Intolerance: Verbal Hostility And Dismissiveness In Response To Subjective Disagreement, Wan Wang

Theses and Dissertations (Comprehensive)

We examine the novel proposition that disagreement on matters of opinion may threaten narcissists’ self-esteem and cause them to express dismissiveness of differing opinions and hostility toward the dissenter, a phenomenon we refer to as narcissistic intolerance. In three studies, participants ostensibly read about an earlier participant’s opinion on a painting (Studies 1 & 2, MTurk samples) or TV show (Study 3, undergraduate sample) that agreed or disagreed with the participant’s own opinion. Participants then wrote a response to the opinion, as though they were responding on an anonymous Internet message board. We coded participants’ responses, finding that participants higher …

Investigating The Roles Of Mechanoreceptive Channels In Tactile Apparent Motion Perception: A Vibrotactile Study, Phill Kim, Philip Servos Dr.

Theses and Dissertations (Comprehensive)

Tactile apparent motion (TAM) is a perceptual phenomenon in which consecutive presentation of multiple tactile stimuli creates an illusion of motion. Employing a novel tactile display device, the Latero, allowed us to investigate this. The current study focused on the Rapidly Adapting (RA) channel and Slowly Adapting I (SAI) channel on the index finger. The experiment implemented vibrotactile masking stimuli to target the mechanoreceptive channels with the goal of gaining better insight into the involvement of mechanoreceptive channels in the perception of TAM. Masking stimuli were used because previous studies have used them to differentiate between different channels; a …

An Examination Of Imagined Contexts: The Unreliability Of Context-Dependent Memory Effects In Recall, Caitlin J. I. Tozios

Theses and Dissertations (Comprehensive)

It is generally accepted that the environmental context present during memory encoding serves as an effective cue for recall if reinstated during retrieval. Participants who perform a free recall test in the same context as that during which they learned a set of words, often remember more words than participants who experience a context mismatch from encoding to retrieval. This is referred to as the context-dependent memory effect and forgetting due to a change in context is referred to as context-dependent forgetting. Recent evidence suggests that contexts need not always be physical but can be mentally generated or imagined and …

The Influence Of Real-Time Visual Feedback Training On Vocal Control, Justeena N. Zaki-Azat

Theses and Dissertations (Comprehensive)

Trained singers have better vocal control when compared to singers without vocal training. The development of precise vocal control, like any motor skill, requires practice with some form of feedback, such as auditory feedback. In addition to auditory feedback, singing training programs use online visual feedback to improve performance accuracy. The purpose of this thesis is to investigate the recent body of literature concerning the cognitive processing of vocal control, and apply this knowledge practically to develop an effective real-time visual feedback training program that enhances vocal control. In the first of two studies, non-singers and singers were randomly assigned …

An Investigation Of The Increased Reliance On Familiarity In Associative Recognition Of Unitized Compound Word Pairs, Fahad Naveed Ahmad

Theses and Dissertations (Comprehensive)

Unitization refers to when two components are integrated or combined into a single unit. So the whole is more familiar than the parts (Graf & Schacter, 1989). Previous researchers have shown unitization of unrelated word pairs can occur by the use of compound definition. As support, they have found unitization to increase reliance on familiarity in associative recognition. The purpose of this PhD dissertation was to examine the effects of unitization of preexperimental associations on associative recognition. The effects of associative recognition of unitized compound word (CW) pairs can serve as a useful benchmark to compare to that of other …

An Exploration Of The Wheel-Induced Feeding-Suppression, Stephen Benjamin Peckham

Theses and Dissertations (Comprehensive)

Anorexia nervosa is an enigmatic human condition typified by food-restriction that is often accompanied by extensive exercise. This has been modeled in rats in the wheel-induced feeding-suppression (WIFS) model. In this model, animals are given access to a running-wheel, which induces a volitional drop in food-consumption. Short periods of wheel access have induced a feeding-suppression which is effectively reversed by chlorpromazine administration (Adams et al., 2009). Recent attempts at replicating Adams et al.’s (2009) feeding-suppression have, however, been unsuccessful (Peckham et al., 2013). These attempts raised questions as to whether or not the existing methodology is most effective at suppressing …

A Heart-Based Sufi Mindfulness Spiritual Practice Employing Self-Journeying, Faruk Arslan

Theses and Dissertations (Comprehensive)

Spiritual Psychology is the study and practice of the art and science of the human evolution of consciousness. The heart occupies an important place in Sufism and is considered to contain the divine spark that leads to spiritual realization. Fethullah Gülen’s action-oriented Sufi methods described in his book series “The Emerald Hills of the Heart” provides the basis for a heart-based therapeutic intervention through self-journeying, which is the objective of this thesis. These self-purification and mindfulness-related transpersonal methods generate a form of treatment that is culturally sensitive. Through my reflections in this research, I transformed my personal experiences into …

A Bittersweet Investigation Of Availability And Nutritive Value As Determinants Of Volitional Sucrose Consumption, Milan D. Valyear

Theses and Dissertations (Comprehensive)

Rats given ~24 h access to a 4% sucrose solution every 3^rd day (E3DA) consume about 100 g more solution than rats with continuous, everyday access (EDA). Under the same EDA-E3DA conditions rats will consume similar amounts of a more concentrated 8 or 16% sucrose solutions (Eikelboom, Hewitt, & Adams, Unpublished). It maybe that with these more concentrated solutions rats hit a satiety limit that prevents a difference between EDA and E3DA consumption from being evident. Experiment 1 was conducted to investigate the effect of adding quinine to 4% and 8% sucrose solutions with the intention of reducing consumption …