Assistant Research Scientist
Department of Psychology
University of California, San Diego
My Research Interests:
-Motion Perception, Attention, and Eye Tracking
-Perception of Sign Language
-Neural Plasticity in Deaf and Visually Impaired Populations
-Development of Vision and Cognition
-Preterm Infants and Infants with Congenital Eye Disorders
We are recruiting infants and children who are deaf or have signing parents. We are also recruiting premature infants who were born early. Our studies help us better understand how our experiences shape our visual and cognitive abilities. Our studies typically involve one or two visits, with testing taking about 20-30 minutes. We try to ensure that our parents, infants, and children have an enjoyable time. For more information, click here to find out more about our studies.
I am an experimental visual psychophysicist studying visual perception in infants, children and adults. I study different populations including infants who were born prematurely and have had extra visual experience outside the womb, individuals who had congenital eye disorders, and individuals who are deaf signers and have had unique reliance on visual input. The paramount goal of studying these populations is to understand the effects of early atypical sensory experiences on different aspects of visual perception (such as contrast, color, motion, form, depth, and faces) and the underlying neural mechanisms. Such work will unveil how the absence of sensory input (as in the case of blindness or deafness) alters remaining, intact perceptual abilities, and how experience with a visual language modality impacts perception, cognition, and language processing.
My Research on Sign Language and Deaf Individuals
Bosworth, R.G., Petrich, J.A.F., & Dobkins, K.R. (2013). Effects of attention and laterality on motion and orientation discrimination in deaf signers. Brain & Cognition, 82(1), 117-126. [pdf]
Bosworth, R.G. & Emmorey, K. (2010). Effects of iconicity and semantic relatedness on lexical access in American Sign Language. Journal of Experimental Psychology, 36(6), 1573-81. [pdf]
Emmorey, K., Bosworth, R.G., & Kraljic, T. (2009). Visual feedback and self-monitoring of sign language. Journal of Memory and Language, 61, 398-411. [pdf]
Bosworth, R.G., Bartlett, M.S., & Dobkins, K.R. (2006). Image statistics of American Sign Language: comparison with faces and natural scenes. Journal of the Optical Society of America, A 23(9). 2085-2096. [pdf]
Bosworth, R.G., Wright, C.E., Bartlett, M.S., Corina, D.P., & Dobkins, K.R. (2003). Characterization of the visual properties of signs in ASL. Chapter in A. E. Baker, B. van den Bogaerde & O. Crasborn (Eds.), Cross-Linguistic Perspectives in Sign Language Research. Hamburg: Signum Press. [pdf]
Bosworth, R.G. & Dobkins, K.R. (2002). The effects of spatial selective attention on motion processing in deaf and hearing subjects. Brain & Cognition, 49(1). 170-181. [pdf]
Bosworth, R.G. & Dobkins, K.R. (2002). Visual field asymmetries for motion processing in deaf and hearing signers. Brain & Cognition, 49(1). 152-169. [pdf]
Dobkins, K.R. & Bosworth, R.G. (2001). Effects of set-size and spatial selective attention on motion processing. Vision Research, 41. 1501-1517. [pdf]
Bosworth, R.G. & Dobkins, K.R. (1999). Left hemisphere dominance for motion processing in deaf signers. Psychological Science, 10(3), 256-262. [pdf]
Effects of Genetics and Experience on Visual and Cognitive Development
Bosworth, R.G., Farkas, C. & Dobkins, K.R. (2012). Do infants demonstrate perceptual learning? Journal of Vision, 12(9): 695. [abstract]
Blumenthal, E., Bosworth, R.G., & Dobkins, K. (2012). Genetic and Environmental Contributions to Chromatic and Luminance Contrast Sensitivity in Infant Twins. Journal of Vision, 12(9), 474.
Hoffman, D.R., Theuer, R.C., Castaneda, Y.S., Wheaton, D.H., Bosworth, R.G., O'Connor, A.R., Morale, S.E., Wiedemann, L.E., & Birch, E.E. (2004). Maturation of visual acuity is accelerated in breast-fed term infants fed baby food containing DHA-enriched egg yolk. Journal of Nutrition, 134 (9), 2307-2313. [pdf]
Visual Abilities in Preterm Infants
Bosworth, R.G. & Dobkins, K.R. (2013). Effects of prematurity on the development of contrast sensitivity: Testing the visual experience hypothesis. Vision Research, 82(19), 31-41. [pdf]
Bosworth, R.G., Robbins, S.L., Granet, D.B., & Dobkins, K.R. (2013). Delayed luminance and chromatic contrast sensitivity in infants with Retinopathy of Prematurity.Documenta Ophthalmologica, 127(1), 57-68. [pdf]
Visual Abilities in Children with Congenital Eye Disorders
Bosworth, R.G. & Birch, E.E. (2007). Nasal-temporal asymmetries in motion detection and motion VEP in normal infants and young patients with infantile esotropia. Journal of Investigative Ophthalmology & Vision Science, 48(12), 5523-5531. [pdf]
Bosworth, R.G. & Birch, E.E. (2005). Motion detection in normal infants and young patients with infantile esotropia. Vision Research, 45(12). 1557-1567. [pdf]
Birch, E.E. & Bosworth, R.G. (2004). Visual evoked potentials in infants and children. Chapter in M. J Aminoff (Ed.). Electrodiagnosis in Clinical Neurology, 5th Edition. New York: Churchill-Livingstone, pp.439-450.
Birch E.E., Felius J., Stager Sr., D.R., Weakley Jr., D.R., & Bosworth R.G. (2004). Pre-operative stability of infantile esotropia and post-operative outcome. American Journal of Ophthalmology, 138, 1003-9. [pdf]