ALT This image illustrates the 2 context effects found: on the left an effect of what the participants just saw, on the right an effect of what the participants were just shown. Images are from a set of car to turtle shapes. Effect of what participants just saw: Both the previous and current image are shown, for two cases. In both, the previous image is the same, but the interpretation differed (seen as car versus turtle). When the previous image was seen as a car, chances are higher to see a car again in the current, more ambiguous image. When the previous image was seen as a turtle, chances are lower to see a car now. Effect of what participants were just shown: Both previous images were seen as a car, but in the former the image was a clear example of a car, in the latter a less clear example of a car. When seeing the current, more ambiguous image, chances are lower to see a car when the previous image was a clear example of a car than when it was a less clear example of a car.
ALT This image shows a set of shapes going from a typical car shape to a typical turtle shape in ten steps. The most left shape (typical car) and the most right shape (typical turtle) are indicated as the reference points. The first and third shape in the row are indicated with a blue line relating them. Also the last shape and two before last shape in the row are indicated with a blue line relating them. Below it says that the difference between the two images in a pair looks smaller near a reference point. The fifth and seventh shape in the set of eleven shapes are indicated with an orange line relating them. Below it says that the difference between the two images in a pair looks smaller further away from reference points.
