Psychology Commons^™

Language Abilities As A Function Of Lateralization Of Language-Specific Brain Networks, Jacey Anderson

Honors Scholar Theses

The strength of hemispheric lateralization appears to be a good predictor of language abilities in children with developmental language impairments. Studies of healthy adults, in contrast, have generally failed to identify any association between degree of lateralization and language abilities, perhaps due to limited sensitivity to individual differences in standardized language assessments. This study used fMRI to measure the lateralization of functional task-engaged language networks in 25 healthy right-handed adults. Linear regressions examined lateralization indices (LI) of language activation in inferior temporal, superior temporal, and frontal brain networks, as a function of syntactic complexity (via story retelling), a grammaticality judgment …

Exploring The Relationship Between Children’S Vocabulary And Their Understanding Of Cardinality: A Methodological Approach, Justin Slifer, Emily Carrigan, Kristin Walker, Marie Coppola

Honors Scholar Theses

Is there a relationship between vocabulary and children’s understanding of cardinality? Does the way in which we classify cardinality data as tested by the Give-a-Number task affect finding such a relationship? This thesis explored these questions using a methodological approach, by testing the relationship between children’s receptive vocabulary scores and Give-a-Number scores classified in two different ways, the traditional knower-level assessment, as well as by calculating the proportion of trials answered correctly. A significant correlation was found between participants’ receptive vocabulary scores and Give-a-Number scores using both manners of classification, independent of the children’s ages. The results were compared with …

Referential Transparency In Young Children’S Picture Books: A Pilot Study, Brianna Kinnie

Honors Scholar Theses

A wealth of research has shown that reading picture books supports several aspects of young children’s learning and development. In this thesis, we explore the hypothesis that the power of picture books is in part due to their referentially transparent nature. To test this possibility, we designed a picture-book version of the Human Simulation Paradigm (HSP), an experimental paradigm previously used to quantify the referential transparency of child-directed speech in parent-child interactions. Adult participants (N = 18) were presented with pages from children’s picture books (with text blocked out) and asked to identify either the nouns or the verbs …

Comparing Behavioral And Parent-Report Measures Of Executive Functioning In Deaf And Typically Hearing Children, Abeer Mohamed

Honors Scholar Theses

Executive functioning (EF) is a multidimensional aspect of development that encompasses various mental skills. Children’s utilization of inhibition, in particular, has proven to be one of the most important determinants of academic success. How deafness in children impacts their EF abilities is a question that remains divisive within deaf studies. Some suggest that auditory deprivation is a direct cause of poor EF, while others posit reduced or insufficient language experience that deaf children live with harms their EF development. We sought to explore this question further with a participant sample from our larger SLaM (Study of Language and Math) project. …

Math Anxiety In Deaf, Hard Of Hearing, And Hearing Students: Antecedents And Outcomes, Akriti Mishra

Honors Scholar Theses

Math anxiety, or the feeling of apprehension in the face of math, impedes success in the subject. A global problem affecting all age groups, math anxiety can cause short-term distress and long-term avoidance of science, technology, engineering and math (STEM) careers. Math anxiety may be an underlying reason that deaf and hard of hearing individuals are significantly underrepresented in the STEM workforce. This study aims to understand the development and consequences of math anxiety in deaf, hard of hearing, and hearing university students via an online questionnaire. One hundred thirty-six deaf and hard of hearing students and 162 hearing students …

The Value Of Supportive Touch And Maternal Attention In Measures Of Maternal Sensitivity, Jamila Douglas

Honors Scholar Theses

This project aimed to examine the mother-child dyad during the second year (toddlerhood) in regards to sensitive parenting, with valuable insight into the naturalistic setting of the home (as opposed to a laboratory). With a subset of participants from the National Institute of Health sponsored study, The Play and Learning Across a Year Project (The PLAY Project), I evaluated mother-child dyads and the contact between them, in regards to supportive vs. restrictive touch; as well as attention paid to the child by the mother. Hour-long videos taken in the home environment were analyzed with Datavyu coding software to catch instances …

Amygdala And Neocortical Structural Volume Analysis In The Shank3b Mutant Mouse Model Of Autism Spectrum Disorder, Preet Sawhney

Honors Scholar Theses

Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder that is characterized by abnormal social behavior, deficits in communication, and motor stereotypy. The SHANK3 gene, responsible for the generation of a scaffolding protein that is integral for the development of synapses, has been identified as one of the primary candidate genes implicated in the disorder. Shank3B is the rodent homolog for this gene. Research has shown that when this gene is disrupted in rodent models (e.g., via knock-out (KO)), ASD-like behaviors result. These include deficits in social interaction, increased anxiety, and repetitive self-grooming. The current study aimed to identify a physiological …

Maternal Immune Activation (Mia) In Mice: A Study To Phenotype Asd-Related Communication Behaviors And Analyze Maternal Health Outcomes In The Us, Komalpreet Gulati

Honors Scholar Theses

Core symptoms of Autism Spectrum Disorders (ASD) include deficits in social/communicative behaviors, and repetitive/stereotyped behaviors. Mouse models are a highly established paradigm used to study the phenotypic deficits that result from various inducible genotypic or environmental risk factors for ASD. Previous studies have demonstrated a link between maternal immune activation (MIA) and ASD-like behaviors in mouse models. In this model, the maternal immune system is activated during pregnancy by injecting the viral mimic poly(I:C). The resulting offspring are phenotyped and analyzed with regards to their communicative behaviors.

Previous studies have demonstrated that male pups born to dams with immune activation …

The Ush2a Gene: An Analysis Of Ultrasonic Vocalizations In A Mouse Model Of Usher Syndrome Type 2, Kiana R. Akhundzadeh

Honors Scholar Theses

Usher syndrome type 2 is a complex autosomal recessive genetic disorder that is characterized by moderate to severe congenital sensorineural hearing loss, the onset of retinitis pigmentosa in the second decade of life, and in some cases, vestibular dysfunction. Mutations in the USH2A gene account for 85% of cases of type 2. The USH2A gene is responsible for encoding the protein usherin, which has an important role in the development and function of inner ear hair cells and retinal photoreceptors. Until recently, it has been believed that carriers of the USH2A mutation were phenotype free. However, recent data has suggested …

Responding To Trauma: Help-Seeking Behavior And Posttraumatic Growth In A College Sample, Aaron J. Burrick

Honors Scholar Theses

Research indicates that traumatic experiences can impact college students’ mental health, academic abilities, and relationships with peers. Trauma and associated symptoms of PTSD can lower students’ well-being and increase the risk of withdrawing from the university. Research also emphasizes the importance of psychological help-seeking as a way to experience posttraumatic growth. This study examines traumatic experiences, help-seeking attitudes, barriers, and behaviors, and posttraumatic growth in a sample of 168 undergraduate college students. Results indicated an overwhelming preference for informal help-seeking resources and the importance of traumatic severity in the decision to seek help. Additionally, female participants reported greater traumatic severity …

Anxiety Symptoms In Individuals With High Functioning Autism, Jane C. Kelleher

Honors Scholar Theses

Research indicates a complicated relationship between anxiety disorders and autism spectrum disorders (ASDs). The current study examined the relationship between anxiety symptoms and ASD in 30 Optimal Outcome (OO) individuals, 33 High Functioning Autism (HFA) individuals, and 34 Typically Developing (TD) individuals. The groups were compared on the K-SADS measure of anxiety symptoms. The HFA group presented greater anxiety than both the OO and TD groups, and the OO and TD groups only differed on one anxiety symptom. Across all three groups, there was a significant association between greater anxiety symptoms and a higher level of social and communicative impairment. …

Joint Attention In Young Children With Autism, Sabrina Jara

Honors Scholar Theses

Autism spectrum disorders (ASDs) are classified as pervasive developmental disorders characterized by social, communicative, and behavioral impairments. According to formal and informal reports, children with ASD present with receptive and expressive language delay. Joint attention (JA: the behavior that occurs when two individuals focus on the same object or event) has been identified as a possible marker of delayed language development in children with ASD. In this study, the JA behaviors in children with ASD were contrasted with initially language-matched typically developing (TYP) children across three visits.

Measures of language, the frequency, duration, and source of initiation of JA episodes, …

History Of Maltreatment And Psychiatric Impairment In Children In Outpatient Psychiatric Treatment, Kerry Gagnon

Honors Scholar Theses

There is increasing evidence that childhood victimization and attachment disruptions impact a child’s development. In this study, children and adolescents from an outpatient psychiatric clinic were assessed, measuring history of trauma, history of out-of-home placement, initial diagnoses, and CBCL internalizing and externalizing problem scores. Multiple regression analyses showed that both violent abuse trauma (physical/sexual abuse) and victim trauma (physical abuse/sexual abuse/witnessing domestic violence/witnessing community violence) are prevalent among patients with externalizing severity problems; concluding that diagnosis alone may not account for a history of victimization, but externalizing problem severity does. Overall, the study is consistent with past literature that it …

Season Of Birth Effects In Autism Spectrum Disorders, Kastley Marvin

Honors Scholar Theses

One factor that is investigated as a possible clue to etiological factors in Autism Spectrum Disorders (ASD) is season of birth. Season of birth effects could be the result of temperature, toxins, dietary changes, viral infections, and cultural or social factors that change seasonally (Bolton, Pickles, Harrington, Macdonald, & Rutter, 1992). A number of studies have looked for season of birth effects in ASD with no conclusive results. The current study analyzed season of birth effects in a sample of 441 children diagnosed with ASD. Analysis was also repeated after excluding prematurely born children from the data. Level of functioning …