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Social and Behavioral Sciences Commons

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Life Sciences

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The University of San Francisco

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2012

Articles 1 - 2 of 2

Full-Text Articles in Social and Behavioral Sciences

Dynamic Variability Of Isometric Action Tremor In Precision Pinching, Tim Eakin, Waneen Spirduso, Karen Francis Jan 2012

Dynamic Variability Of Isometric Action Tremor In Precision Pinching, Tim Eakin, Waneen Spirduso, Karen Francis

Kinesiology (Formerly Exercise and Sport Science)

Evolutionary development of isometric force impulse frequencies, power, and the directional concordance of changes in oscillatory tremor during performance of a two-digit force regulation task was examined. Analyses compared a patient group having tremor confounding volitional force regulation with a control group having no neuropathological diagnosis. Dependent variables for tremor varied temporally and spatially, both within individual trials and across trials, across individuals, across groups, and between digits. Particularly striking findings were magnitude increases during approaches to cue markers and shifts in the concordance phase from pinching toward rigid sway patterns as the magnitude increased. Magnitudes were significantly different among …


Parenting As Phenotype: A Behavioral Genetic Approach To Understanding Parenting, Shirley Mcguire, Nancy Segal, S. Hershberger Jan 2012

Parenting As Phenotype: A Behavioral Genetic Approach To Understanding Parenting, Shirley Mcguire, Nancy Segal, S. Hershberger

Psychology

This article discusses the behavioral genetic (BG) approach to parenting. Parenting is considered a phenotype that can be influenced by nature and nurture. Genetic contributions to parenting are conceptualized as evidence of genotype–environment correlation (rGE). Early BG studies focused on demonstrating that some parenting dimensions were heritable due to passive and evocative rGE processes. Current studies are investigating moderators and mediators of genetic and environmental contributions to parenting. The paper uses parent and child report data on parental warmth from the Twins, Adoptees, Peers, and Siblings study to illustrate the BG approach. Results show that heritability is …