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Cox, Dana C.; Lo, Jane-Jane – Mathematics Education Research Journal, 2014
This study is focused on identifying and describing the reasoning patterns of middle grade students when examining potentially similar figures. Described here is a framework that includes 11 strategies that students used during clinical interview to differentiate similar and non-similar figures. Two factors were found to influence the strategies…
Descriptors: Intermediate Grades, Middle School Students, Interviews, Thinking Skills
Grinter, Emma J.; Maybery, Murray T.; Pellicano, Elizabeth; Badcock, Johanna C.; Badcock, David R. – Journal of Child Psychology and Psychiatry, 2010
Background: Several researchers have found evidence for impaired global processing in the dorsal visual stream in individuals with autism spectrum disorders (ASDs). However, support for a similar pattern of visual processing in the ventral visual stream is less consistent. Critical to resolving the inconsistency is the assessment of local and…
Descriptors: Autism, Pervasive Developmental Disorders, Visual Perception, Geometric Concepts
Kelso, Robert P., Sr. – Engineering Design Graphics Journal, 2008
The paper presents a unique approach in associating perspective projection with the image beheld by the eye and demonstrates that all graphical and photographic perspective projections must contain distortion when compared to the image beheld by the eye. (Contains 8 figures.)
Descriptors: Human Body, Vision, Visual Perception, Visual Discrimination
Oberfeld, Daniel; Hecht, Heiko – Journal of Experimental Psychology: Human Perception and Performance, 2008
The effects of moving task-irrelevant objects on time-to-contact (TTC) judgments were examined in 5 experiments. Observers viewed a directly approaching target in the presence of a distractor object moving in parallel with the target. In Experiments 1 to 4, observers decided whether the target would have collided with them earlier or later than a…
Descriptors: Cues, Experimental Psychology, Undergraduate Students, Visual Stimuli
Bertamini, Marco – Journal of Experimental Psychology: Human Perception and Performance, 2008
Sensitivity to shape changes was measured, in particular detection of convexity and concavity changes. The available data are contradictory. The author used a change detection task and simple polygons to systematically manipulate convexity/concavity. Performance was high for detecting a change of sign (a new concave vertex along a convex contour…
Descriptors: Infants, Visual Perception, College Students, Visual Stimuli
Aslan, Durmus; Arnas, Yasare Aktas – International Journal of Early Years Education, 2007
The main purpose of this research was to determine three- to six-year-old pre-schoolers' recognition of basic geometric shapes, the criteria they use to distinguish members of a shape class and whether or not those criteria change in relation to age. Participants were 100 children aged three to six. Data were gathered from individual interviews…
Descriptors: Geometric Concepts, Preschool Children, Visual Discrimination, Visual Perception
de Fockert, Jan; Davidoff, Jules; Fagot, Joel; Parron, Carole; Goldstein, Julie – Journal of Experimental Psychology: Human Perception and Performance, 2007
The Ebbinghaus (Titchener) illusion was examined in a remote culture (Himba) with no words for geometric shapes. The illusion was experienced less strongly by Himba compared with English participants, leading to more accurate size contrast judgments in the Himba. The study included two conditions of inducing stimuli. The illusion was weaker when…
Descriptors: Visual Perception, Visual Discrimination, Misconceptions, Cross Cultural Studies
Barenholtz, Elan; Feldman, Jacob – Cognition, 2006
Figure/ground assignment--determining which part of the visual image is foreground and which background--is a critical step in early visual analysis, upon which much later processing depends. Previous research on the assignment of figure and ground to opposing sides of a contour has almost exclusively involved static geometric factors--such as…
Descriptors: Visual Discrimination, Geometric Concepts, Cues, Animation
Cowan, Nelson; Naveh-Benjamin, Moshe; Kilb, Angela; Saults, J. Scott – Developmental Psychology, 2006
We asked whether the ability to keep in working memory the binding between a visual object and its spatial location changes with development across the life span more than memory for item information. Paired arrays of colored squares were identical or differed in the color of one square, and in the latter case, the changed color was unique on…
Descriptors: Geometric Concepts, Memory, Older Adults, Children
Thoma, Volker; Hummel, John E.; Davidoff, Jules – Journal of Experimental Psychology: Human Perception and Performance, 2004
According to the hybrid theory of object recognition (J. E. Hummel, 2001), ignored object images are represented holistically, and attended images are represented both holistically and analytically. This account correctly predicts patterns of visual priming as a function of translation, scale (B. J. Stankiewicz & J. E. Hummel, 2002), and…
Descriptors: Attention, Visual Perception, Visual Discrimination, Psychological Studies
Strother, Lars; Kubovy, Michael – Journal of Experimental Psychology: Human Perception and Performance, 2006
The authors conducted 3 experiments to explore the roles of curvature, density, and relative proximity in the perceptual organization of ambiguous dot patterns. To this end, they developed a new family of regular dot patterns that tend to be perceptually grouped into parallel contours, dot-sampled structured grids (DSGs). DSGs are similar to the…
Descriptors: Experimental Psychology, Proximity, Visual Perception, Experimental Psychology
Shaffer, Dennis M.; McBeath, Michael K. – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2005
When fielders catch fly balls they use geometric properties to optically maintain control over the ball. The strategy provides ongoing guidance without indicating precise positional information concerning where the ball is located in space. Here, the authors show that observers have striking misconceptions about what the motion of projectiles…
Descriptors: Visual Perception, Cognitive Processes, Beliefs, Visual Discrimination
Rutherford, M. D.; Pennington, Bruce F.; Rogers, Sally J. – Journal of Autism and Developmental Disorders, 2006
Visual perception may be a developmental prerequisite to some types of social understanding. The ability to perceive social information given visual motion appears to develop early. However, children with autism have profound deficits in social cognitive function and may fail to see social motion in the same way that typically developing children…
Descriptors: Motion, Geometric Concepts, Visual Perception, Developmental Disabilities
Wender, Karl – 1970
Models for multidimensional scaling use metric spaces with additive difference metrics. Two important properties of additive difference metrics are decomposability and intradimensional subtractivity. A prediction was derived from these properties and tested experimentally. Eleven non-psychology students were used as subjects. Rectangles varying in…
Descriptors: Geometric Concepts, Mathematical Models, Multidimensional Scaling, Research Methodology
Lu, Hongjing; Morrison, Robert G.; Hummel, John E.; Holyoak, Keith J. – Journal of Experimental Psychology: Human Perception and Performance, 2006
Previous research has shown that synchronized flicker can facilitate detection of a single Kanizsa square. The present study investigated the role of temporally structured priming in discrimination tasks involving perceptual relations between multiple Kanizsa-type figures. Results indicate that visual information presented as temporally structured…
Descriptors: Reaction Time, Geometric Concepts, Visual Perception, Visual Discrimination
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