Give a toy model of a horse/elephant to visually challenged and sighted children. Let the visually challenged children feel by touching the toy model for some time. Ask the children to describe the model. Show the same toy model to sighted children. Compare their descriptions and find out their similarities and differences. Take another toy model (e.g., a parrot) and give it to a few visually challenged children to have a feel of it by touching. Then give a sheet of paper and a pencil and ask them to draw the parrot on the sheet. Show the same parrot to sighted children for some time, remove the parrot from their sight, and ask to draw the parrot on a sheet of paper. Compare the drawings of the visually challenged and sighted children and examine their similarities and differences.
When visually challenged children feel the toy model of a horse/elephant by touching, they rely on haptic perception to understand its shape, texture, and structure. They describe the model based on tactile features like the roughness, size, and form of the animal. Sighted children, on the other hand, use visual perception to describe the model, focusing on colour, overall appearance, and visual details.
Similarities: Both groups can identify the object as a horse/elephant and describe its basic features like legs, tail, and body shape. Both form a stable perception of the object despite using different sensory modalities.
Differences: Visually challenged children provide more detailed descriptions of texture and three-dimensional structure, while sighted children focus on visual attributes like colour and overall visual form. This demonstrates that perception is influenced by the sensory channels available and the nature of experiences people have.
When visually challenged children draw the parrot after touching it, they rely on their tactile memory and mental representation formed through touch. Sighted children draw from visual memory after the parrot is removed from their sight.
Similarities: Both groups attempt to represent the basic features of the parrot. Both demonstrate the ability to form mental images and translate them into drawings, showing that perception involves active construction.
Differences: Visually challenged children's drawings may emphasise structural and textural elements they felt, while sighted children's drawings may include more visual details like colour patterns and proportional features. This relates to studies showing that interpretation of pictures is strongly related to cultural experiences and learning opportunities available to people. Just as people from pictureless environments struggle to recognise objects in pictures, visually challenged children may have different ways of representing objects due to their unique perceptual experiences.
Explanation
This case study illustrates key concepts from the chapter on perception. The comparison between visually challenged and sighted children demonstrates how perception is shaped by available sensory channels and experiences. The context highlights that different experiences and learning opportunities influence perception, as seen in Hudson's study where people from pictureless environments failed to identify objects in pictures. Similarly, Sinha and Mishra's studies show that interpretation of pictures is related to cultural experiences. The activity demonstrates perceptual processes and how people form stable perceptions through different sensory modalities.