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Social and Behavioral Sciences Commons

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Psychology

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University of South Carolina

Faculty Publications

Fragile X carriers

Publication Year

Articles 1 - 3 of 3

Full-Text Articles in Social and Behavioral Sciences

Curvilinear Association Between Language Disfluency And Fmr1 Cgg Repeat Size Across The Normal, Intermediate, And Premutation Range, Jessica Klusek, Ann Porter, Leonard Abbeduto, Tatyana Adayev, Flora Tassone, Marsha R. Mailick, Anne Glicksman, Bridgette L. Tonnsen, Jane E. Roberts Aug 2018

Curvilinear Association Between Language Disfluency And Fmr1 Cgg Repeat Size Across The Normal, Intermediate, And Premutation Range, Jessica Klusek, Ann Porter, Leonard Abbeduto, Tatyana Adayev, Flora Tassone, Marsha R. Mailick, Anne Glicksman, Bridgette L. Tonnsen, Jane E. Roberts

Faculty Publications

Historically, investigations of FMR1 have focused almost exclusively on the clinical effects of CGG expansion within the categories of the premutation (55–200 CGG repeats) and fragile X syndrome (>200 CGG repeats). However, emerging evidence suggests that CGG-dependent phenotypes may occur across allele sizes traditionally considered within the “normal” range. This study adopted an individual-differences approach to determine the association between language production ability and CGG repeat length across the full range of normal, intermediate, and premutation alleles. Participants included 61 adult women with CGG repeats within the premutation (n = 37), intermediate (i.e., 41–54 repeats; n = 2), …


Altered Sensitivity To Social Gaze In The Fmr1 Premutation And Pragmatic Language Competence, Jessica Klusek, Joseph Schmidt, Amanda J. Fairchild, Ann Porter, Jane E. Roberts Aug 2017

Altered Sensitivity To Social Gaze In The Fmr1 Premutation And Pragmatic Language Competence, Jessica Klusek, Joseph Schmidt, Amanda J. Fairchild, Ann Porter, Jane E. Roberts

Faculty Publications

Background: The FMR1 premutation affects 1:291 women and is associated with a range of cognitive, affective, and physical health complications, including deficits in pragmatic language (i.e., social language). This study investigated attention to eye gaze as a fundamental social-cognitive skill that may be impaired in the FMR1 premutation and could underlie pragmatic deficits. Given the high prevalence of the FMR1 premutation, efforts to define its phenotype and mechanistic underpinnings have significant public health implications. Methods: Thirty-five women with the FMR1 premutation and 20 control women completed an eye-tracking paradigm that recorded time spent dwelling within the eye region in response …


Reduced Vagal Tone In Women With The Premutation Is Associated With Mrna But Not Depression Or Anxiety, Jessica Klusek, Giuseppe Lafauci, Tatyana Adayev, W Ted Brown, Flora Tassone, Jane E. Roberts May 2017

Reduced Vagal Tone In Women With The Premutation Is Associated With Mrna But Not Depression Or Anxiety, Jessica Klusek, Giuseppe Lafauci, Tatyana Adayev, W Ted Brown, Flora Tassone, Jane E. Roberts

Faculty Publications

BACKGROUND: Autonomic dysfunction is implicated in a range of psychological conditions, including depression and anxiety. The () premutation is a common genetic mutation that affects ~1:150 women and is associated with psychological vulnerability. This study examined cardiac indicators of autonomic function among women with the premutation and control women as potential biomarkers for psychological risk that may be linked to . METHODS: Baseline inter-beat interval and respiratory sinus arrhythmia (a measure of parasympathetic vagal tone) were measured in 35 women with the premutation and 28 controls. The women completed anxiety and depression questionnaires. genetic indices (i.e., CGG repeat, quantitative FMRP, …