Why Barbie feels heavier than Ken: The influence of size-based expectancies and social cues on the illusory perception of weight

@article{Dijker2008WhyBF,
  title={Why Barbie feels heavier than Ken: The influence of size-based expectancies and social cues on the illusory perception of weight},
  author={Anton J. M. Dijker},
  journal={Cognition},
  year={2008},
  volume={106},
  pages={1109-1125}
}
  • A. Dijker
  • Published 1 March 2008
  • Psychology
  • Cognition

Size Matters: A Single Representation Underlies Our Perceptions of Heaviness in the Size-Weight Illusion

It is suggested that the authors' perceptual and sensorimotor representations are not only functionally independent from one another, but that the perceptual system represents a more single, simple size-weight relationship which appears to drive the SWI itself.

The integration of size and weight cues for perception and action: evidence for a weight–size illusion

Both size and weight perceptions are biased by prior experience, and a processing model underlying the size–weight cue integration for the perceptual and motor system is presented.

The weight of expectation: Implicit, rather than explicit, prior expectations drive the size–weight illusion

Surprisingly, participant's perceptions matched, rather than contrasted with, their explicit expectations such that, even though they expected the golf ball to outweigh the beach ball they perceived the Golf ball as feeling heavier than the beach Ball, suggesting that contrasting expectations of heaviness are not necessary to experience weight illusions.

Examining Whether Semantic Cues Can Affect Felt Heaviness When Lifting Novel Objects

It is found that semantic cues affect perception or action enough to induce a novel weight illusion, and the findings suggest that the explicit expectations created by the labels did not dominate the implicit expectationscreated by the equal sizes of the objects, highlighting the segregated nature of cognitive expectations and their variable influences on perception and action.

The size-weight illusion comes along with improved weight discrimination

Test the models’ prediction that weight discrimination of equal-size objects is better in lifting conditions which are prone to the size-weight illusion as compared to conditions lacking (the essentially uninformative) size information and found that JNDs were lower inlifting conditions in which size information was available.

The role of expectancies in the size-weight illusion: A review of theoretical and empirical arguments and a new explanation

  • A. Dijker
  • Psychology
    Psychonomic bulletin & review
  • 2014
The new account explains why the illusion is associated with the repeated generation of inappropriate lifting forces, as well as why it depends on continuous visual exposure to size cues, appears at an early age, and is cognitively impenetrable.

Contribution of surface material and size to the expected versus the perceived weight of objects

The results support the hypothesis that perceived weight may depend on implicit, rather than explicit, weight expectations, and a variant of the random conjoint measurement paradigm was used to obtain subjective interval scales of the contributions of surface material and size to the expected and the perceived weight.

Influence of visually perceived shape and brightness on perceived size, expected weight, and perceived weight of 3D objects

A systematic comparison between perceived size, expected weight, and perceived weight showed that the visual shape–weight and brightness–weight illusions are partially inconsistent with the hypothesis that perceived weight results from the contrast between actual and expected weight.

The number–weight illusion

When objects are manually lifted to compare their weight, then smaller objects are judged to be heavier than larger objects of the same physical weights: the classical size–weight illusion (Gregory,

Low-level sensory processes play a more crucial role than high-level cognitive ones in the size-weight illusion

The results revealed that the strength of the SWI diminished when participants wore the gloves but did not change as cognitive load increased on the dual-task, suggesting that the illusion is more influenced by bottom-up sensory than top-down cognitive processes.

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