Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
Role-Differentiated Bimanual Manipulations Efficiency: The Difference In Speed For Rdbms Based On Age, Toy-Type, And Infant Hand Preference, Sarai Mikal Cortina
Role-Differentiated Bimanual Manipulations Efficiency: The Difference In Speed For Rdbms Based On Age, Toy-Type, And Infant Hand Preference, Sarai Mikal Cortina
Theses and Dissertations
Role-differentiated bimanual manipulation (RDBM) is a complex behavior requiring the complementary movement of two hands to achieve a common goal. The current study investigated the relation of RDBM efficiency (speed to complete a successful RDBM) with hand preference, toy type (simple/difficult), age, and hand used to perform the RDBM. This study observed 46 infants between the ages of 9 to 14 months, each with a different hand preference category. Changes in RDBM efficiency across time were examined across different hand preference groups for RDBMs performed on simple toys using the right hand. The analysis revealed that early-right preference infants had …
Infant Facial Discrimination And Perceptual Narrowing, Joseph Edward Fair
Infant Facial Discrimination And Perceptual Narrowing, Joseph Edward Fair
Theses and Dissertations
During the early stages of infant development the capacity for perceptual (i.e., visual) discrimination is shaped by infants' perceptual experience. Perceptual narrowing is one process hypothesized to account for developmental change. Perceptual narrowing research often demonstrates that infants before 6 months of age are able to discriminate a wide variety of events whereas infants beyond 6 months of age seemingly "lose" some perceptual abilities. Two investigations are proposed to examine the claim that younger, but not older infants can discriminate faces across species. The purpose of Experiment 1 was to determine whether an increase in familiarization and trial times would …