Size Perception of Arrays

Boswell, Alexandria; Caplovitz, Gideon P.; Chuang, Samantha

doi:10.1037/e685842012-129

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, observers can accurately identify the center of a triangle and will do so even when instructed to identify the midpoint of its height (Anstis, Gregory, & Heard, 2009). Moreover, observers tend to use the center of individual elements that make up an array in determining the size of the array (Boswell & Caplovitz, 2012).…”

Section: Discussionmentioning

confidence: 99%

Form features provide a cue to the angular velocity of rotating objects.

Blair

Goold

Killebrew

et al. 2014

Journal of Experimental Psychology: Human Perception and Perfor

View full text Add to dashboard Cite

As an object rotates, each location on the object moves with an instantaneous linear velocity dependent upon its distance from the center of rotation, while the object as a whole rotates with a fixed angular velocity. Does the perceived rotational speed of an object correspond to its angular velocity, linear velocities, or some combination of the two? We had observers perform relative speed judgments of different sized objects, as changing the size of an object changes the linear velocity of each location on the object’s surface, while maintaining the object’s angular velocity. We found that the larger a given object is, the faster it is perceived to rotate. However, the observed relationships between size and perceived speed cannot be accounted for simply by size-related changes in linear velocity. Further, the degree to which size influences perceived rotational speed depends on the shape of the object. Specifically, perceived rotational speeds of objects with corners or regions of high contour curvature were less affected by size. The results suggest distinct contour features, such as corners or regions of high or discontinuous contour curvature, provide cues to the angular velocity of a rotating object.

show abstract

Section: Discussionmentioning

confidence: 99%