Introduction: Can Words Change What You See?

Have you ever looked at a cloud and thought it looked like a dog, but then your friend said, "No, it looks like a dragon," and suddenly you can only see the dragon? This is because our brains don't just "see" what is there; they interpret it using labels and prior knowledge.

In this chapter, we look at a classic study by Carmichael, Hogan, and Walter (1932). They wanted to find out if the words we hear when looking at an image can actually change how we remember that image later. This study is a great example of how language influences our perception and memory.

The Study: Carmichael, Hogan and Walter (1932)

What were the Aims?

The researchers wanted to investigate whether the verbal labels (words) given to ambiguous drawings would affect how participants remembered and redrawn those drawings later. They wanted to see if language "shapes" our visual memory.

The Procedures (How they did it)

The researchers used \(95\) participants, who were split into three different groups. Here is the step-by-step process:

  1. Participants were shown \(12\) ambiguous figures (drawings that could look like more than one thing).
  2. Group 1 (List 1): As they saw each drawing, they were given a specific label (e.g., they saw two circles connected by a line and were told, "This looks like eyeglasses").
  3. Group 2 (List 2): They saw the exact same drawings but were given a different label (e.g., they were told the circles and line looked like a "dumb-bell").
  4. Group 3 (The Control Group): They saw the drawings but were given no verbal labels at all.
  5. After seeing all the images, participants were asked to draw the shapes they had seen from memory as accurately as possible.

Quick Tip: Remember that an "ambiguous figure" is just a drawing that isn't totally clear—it could be interpreted in different ways depending on what you are told.

The Findings (What happened?)

The results showed a clear difference between the groups. The drawings made by the participants were influenced by the labels they heard:

  • In List 1, \(73\%\) of the drawings looked like the label they were given.
  • In List 2, \(74\%\) of the drawings looked like the label they were given.
  • In the Control Group (who had no labels), only \(45\%\) of the drawings resembled either of the objects.

For example, when shown the circles-and-line drawing, people who heard "eyeglasses" drew circles with bridge-like curves, while those who heard "dumb-bell" drew thicker lines and heavier circles.

The Conclusion

The researchers concluded that language can alter our memory of visual forms. We don't store an exact "photograph" of what we see. Instead, we use words to help us make sense of images, and those words can "distort" the image when we try to remember it later. This supports the idea that perception is an active, constructive process.

Cross-reference: This study supports the Constructivist Theory of Perception (Gregory, 1970), which suggests we use prior knowledge to make sense of the world.

Evaluating the Study

To do well in your exam, you need to be able to talk about the strengths (good points) and weaknesses (bad points) of the study. You can use the "GRAVE" mnemonic to help you remember these: Generalisability, Reliability, Application, Validity, and Ethics.

Strengths

  • High Control (Reliability): Because this was a laboratory experiment, the researchers had a lot of control. They used the same images for everyone and standardized the labels, meaning the study can be easily repeated to see if the same results happen again.
  • Use of a Control Group: By having a group that received no labels, the researchers could prove that it was the words causing the change in memory, not just people being bad at drawing!
  • Large Number of Drawings: Because they used \(12\) different figures and over \(90\) participants, they collected a lot of evidence (data) to support their conclusion.

Weaknesses

  • Low Ecological Validity: In real life, we rarely look at simple line drawings and get told what they are. This task was artificial and doesn't necessarily reflect how our memory works in complex, everyday situations.
  • Ambiguous Stimuli: The drawings were purposefully made to be unclear. If the drawings had been very clear (like a perfect photo of a dog), the labels might not have had any effect at all. This means the findings might only apply to unclear images.
  • Subjectivity: To decide if a drawing "matched" a label, the researchers had to judge the drawings themselves. This is subjective (based on opinion), which might lead to bias in the results.

Summary Checklist

Before you move on, make sure you can answer these questions:

  • Can you name the three groups used in the study?
  • What was the main difference between the drawings made by List 1 and List 2?
  • What does "ambiguous" mean in the context of this study?
  • Why is having a control group important for the validity of this study?

Key Takeaway: Carmichael, Hogan and Walter (1932) proved that the words we use to describe what we see act as a "filter" for our memory. Our memory "reconstructs" the image to fit the label we were given!