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Developmental Psychology

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Theses and Dissertations--Psychology

Theses/Dissertations

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Full-Text Articles in Psychology

Categorical Perception Of Species In Infancy, Hannah B. White Jan 2016

Categorical Perception Of Species In Infancy, Hannah B. White

Theses and Dissertations--Psychology

Although there is a wealth of knowledge on categorization in infancy, there are still many unanswered questions about the nature of category representation in infancy. For example, it is yet unclear whether categories in infancy have well-defined boundaries or what knowledge about species categories young infants have before entering the lab. Using a morphing technique, we linearly altered the proportion of cat versus dog in images and observed how infants reacted to contrasts between pairs of images that either did or did not cross over the categorical boundary. This was done while equating between-category and within-category similarity. Results indicate that …


The Whole Picture: Body Posture Recognition In Infancy, Alyson J. Hock Jan 2013

The Whole Picture: Body Posture Recognition In Infancy, Alyson J. Hock

Theses and Dissertations--Psychology

Holistic image processing is tied to expertise and is characteristic of face and body processing by adults. Infants process faces holistically, but it is unknown whether infants process body information holistically. In the present study, we examined whether infants discriminate changes in body posture holistically. Body posture is an important nonverbal cue that signals emotion, intention, and goals of others even from a distance. In the current study, infants were tested for discrimination between body postures that differ in limb orientations in three conditions: in the context of the whole body, with just the limbs that change orientation, or with …