Award Date

1-1-1999

Degree Type

Thesis

Degree Name

Master of Arts (MA)

Department

Psychology

First Committee Member

Charles Rasmussen

Number of Pages

44

Abstract

Eighty-three college undergraduates estimated midpoints of vertical lines presented in cued (a letter or figure presented below the line), uncued, and inverted T conditions. Subject's mean estimates were near the geometric midpoint in the two cued conditions, and significantly above the midpoint in the uncued and inverted T conditions. Mean estimates in the inverted T conditions were significantly above those in the uncued condition. These displacements are discussed in relation to previous midpoint estimation findings and theoretical explanations of the vertical-horizontal illusion. The midpoint estimation task is evaluated as an investigative tool in studies of geometric-optical illusions, and recommendations for further study are suggested.

Keywords

Applied; Estimation; Horizontal; Illusion; Midpoint; Vertical

Controlled Subject

Psychology, Experimental; Psychophysiology; Psychobiology

File Format

pdf

File Size

1249.28 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

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