Cognitive Psychology: Connecting Mind, Research and Everyday Experience (MindTap Course List)
Cognitive Psychology: Connecting Mind, Research and Everyday Experience (MindTap Course List)
4th Edition
ISBN: 9781285763880
Author: E. Bruce Goldstein
Publisher: Cengage Learning
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Chapter 3.3, Problem 1TY
Summary Introduction

Introduction

Oblique effect refers to the relative deficiency in performance with respect to the perception of oblique contours in comparison to the performance of vertical or horizontal contours. Two factors may play a role in causing this effect, namely evolution and experience.

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Oblique effect makes it possible for humans' discriminability of direction or orientation to be significantly better around vertical or horizontal axes, in comparison to a slanted one. Individuals' experience with such physical properties of the environment, natural as well as man-made, can affect this effect. This is so because human-made surroundings, like buildings, are comprised of a number of verticals as well as horizontals, whereas natural ones are comprised of plants and trees that are more likely to be straight or perpendicular. This might have also evolved humans via their experience to be more comfortable with vertical/horizontal positioning than a rarely observed tilted one.

Through evolution, creatures whose optical systems are comprised of nerve cells can significantly fire the things to the surrounding, for example, vertical contours have an increased probability of surviving and passing on its abilities. In contrast, the creatures having only the visual organization, which do not encompass the specific neuron set are not able to sense the upright entities.

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